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70-49-5

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70-49-5 Usage

Chemical Properties

white to almost white crystalline powder

Uses

Different sources of media describe the Uses of 70-49-5 differently. You can refer to the following data:
1. Antirheumatic.
2. Mercaptosuccinic acid is used in the preparation of mercaptosuccinic acid diethyl ester by reaction with ethanol. It is also used as a brightening agent in metal plating. Further, it serves as an intermediate for the synthesis of corrosion inhibitors, soil fumigants, active pharmaceutical ingredients and electroplating agents.
3. Mercaptosuccinic acid has been used as a dopant for the synthesis of carbon nanodots from citric acid. It can be used as a capping and reducing agent to synthesize monolayer-capped gold nanoparticles.

General Description

Mercaptosuccinic acid(MSA) is a chiral multifunctional intermediate material used as a stabilizing and capping agent in the synthesis of biologically active sulfurs.

Purification Methods

Dissolve the acid in water and extract it several times with diethyl ether to remove imprities. The aqueous solution gave the acid on freeze-drying. [Beilstein 3 IV 472.]

Check Digit Verification of cas no

The CAS Registry Mumber 70-49-5 includes 5 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 2 digits, 7 and 0 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 70-49:
(4*7)+(3*0)+(2*4)+(1*9)=45
45 % 10 = 5
So 70-49-5 is a valid CAS Registry Number.
InChI:InChI=1/C4H6O4S/c5-3(6)1-2(9)4(7)8/h2,9H,1H2,(H,5,6)(H,7,8)/t2-/m0/s1

70-49-5 Well-known Company Product Price

  • Brand
  • (Code)Product description
  • CAS number
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  • Price
  • Detail
  • Alfa Aesar

  • (B23301)  Mercaptosuccinic acid, 98%   

  • 70-49-5

  • 25g

  • 209.0CNY

  • Detail
  • Alfa Aesar

  • (B23301)  Mercaptosuccinic acid, 98%   

  • 70-49-5

  • 100g

  • 486.0CNY

  • Detail
  • Alfa Aesar

  • (B23301)  Mercaptosuccinic acid, 98%   

  • 70-49-5

  • 500g

  • 1643.0CNY

  • Detail
  • Aldrich

  • (88460)  Mercaptosuccinicacid  ReagentPlus®, ≥99.0% (HPLC)

  • 70-49-5

  • 88460-100G

  • 479.70CNY

  • Detail
  • Aldrich

  • (88460)  Mercaptosuccinicacid  ReagentPlus®, ≥99.0% (HPLC)

  • 70-49-5

  • 88460-500G

  • 2,031.12CNY

  • Detail
  • Vetec

  • (V900745)  Mercaptosuccinicacid  Vetec reagent grade, 97%

  • 70-49-5

  • V900745-25G

  • 228.15CNY

  • Detail
  • Vetec

  • (V900745)  Mercaptosuccinicacid  Vetec reagent grade, 97%

  • 70-49-5

  • V900745-100G

  • 876.33CNY

  • Detail
  • Aldrich

  • (M6182)  Mercaptosuccinicacid  97%

  • 70-49-5

  • M6182-25G

  • 262.08CNY

  • Detail
  • Aldrich

  • (M6182)  Mercaptosuccinicacid  97%

  • 70-49-5

  • M6182-100G

  • 683.28CNY

  • Detail
  • Aldrich

  • (M6182)  Mercaptosuccinicacid  97%

  • 70-49-5

  • M6182-500G

  • 2,354.04CNY

  • Detail

70-49-5SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 12, 2017

Revision Date: Aug 12, 2017

1.Identification

1.1 GHS Product identifier

Product name thiomalic acid

1.2 Other means of identification

Product number -
Other names 2-sulfanylbutanedioic acid

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:70-49-5 SDS

70-49-5Synthetic route

C5H6N2O3S

C5H6N2O3S

DL-thiomalic acid
70-49-5

DL-thiomalic acid

Conditions
ConditionsYield
With ammonium hydroxide In water at 120℃; for 2h; Sealed tube; High pressure;78%
(2E)-but-2-enedioic acid
110-17-8

(2E)-but-2-enedioic acid

DL-thiomalic acid
70-49-5

DL-thiomalic acid

Conditions
ConditionsYield
With sodium hydroxide; hydrogen sulfide In water at 120℃; under 7500.75 Torr; for 4h;75%
With sodium hydroxide; sodium hydrogensulfide
With hydrogen sulfide; molecular sieves 4A (powder) In 1-methyl-pyrrolidin-2-one at 100℃; under 3750.38 Torr; for 5h; Product distribution / selectivity;72 %Chromat.
2-Acetylsulfanyl-succinic acid bis-((1S,2R,5S)-2-isopropyl-5-methyl-cyclohexyl) ester

2-Acetylsulfanyl-succinic acid bis-((1S,2R,5S)-2-isopropyl-5-methyl-cyclohexyl) ester

DL-thiomalic acid
70-49-5

DL-thiomalic acid

Conditions
ConditionsYield
With sodium hydroxide at 60℃; for 12h;68%
maleic anhydride
108-31-6

maleic anhydride

O,O-Diethyl hydrogen phosphorodithioate
298-06-6

O,O-Diethyl hydrogen phosphorodithioate

DL-thiomalic acid
70-49-5

DL-thiomalic acid

Conditions
ConditionsYield
beim Erwaermen des Reaktionsprodukts mit Wasser oder wss. Salzsaeure;
bromosuccinic acid
923-06-8, 584-98-5

bromosuccinic acid

DL-thiomalic acid
70-49-5

DL-thiomalic acid

Conditions
ConditionsYield
With potassium sulphide at 110℃;
With potassium hydroxide; hydrogen sulfide; water nach 5 Tagen versetzt man mit Schwefelsaeure und aethert aus;
ethylcarbamoylsulfanyl-succinic acid
89776-00-1

ethylcarbamoylsulfanyl-succinic acid

DL-thiomalic acid
70-49-5

DL-thiomalic acid

Conditions
ConditionsYield
With ammonia at 20℃; dextrorotatory form;
in sauerer oder alkalischer Loesung; dextrorotatory form;
ethoxythiocarbonylmercapto-succinic acid
22119-15-9

ethoxythiocarbonylmercapto-succinic acid

DL-thiomalic acid
70-49-5

DL-thiomalic acid

Conditions
ConditionsYield
With ethanol; ammonia
With ammonium hydroxide
With ammonia levorotatory thiomalic acid;
With ammonia dextrorotatory thiomalic acid;
3,4-dithia-hexane-1,2,5,6-tetracarboxylic acid
3384-95-0

3,4-dithia-hexane-1,2,5,6-tetracarboxylic acid

DL-thiomalic acid
70-49-5

DL-thiomalic acid

Conditions
ConditionsYield
With sodium hydroxide; aluminium
acetylsulfanyl-succinic acid
6332-90-7

acetylsulfanyl-succinic acid

DL-thiomalic acid
70-49-5

DL-thiomalic acid

Conditions
ConditionsYield
With sodium hydroxide
maleic acid
110-16-7

maleic acid

DL-thiomalic acid
70-49-5

DL-thiomalic acid

Conditions
ConditionsYield
With sodium hydroxide; sodium hydrogensulfide
With hydrogen sulfide; molecular sieves 4A (powder) In 1-methyl-pyrrolidin-2-one at 100℃; under 3900.39 - 3975.4 Torr; for 5h; Product distribution / selectivity;75 %Chromat.
(carboxymethylthio)succinic acid
99-68-3

(carboxymethylthio)succinic acid

A

DL-thiomalic acid
70-49-5

DL-thiomalic acid

B

acetic acid
64-19-7

acetic acid

Conditions
ConditionsYield
thymol; potassium nitrate In water Mechanism; examination of further solvents; electrolysis;
(+-)-mercaptosuccinic acid diethyl ester

(+-)-mercaptosuccinic acid diethyl ester

DL-thiomalic acid
70-49-5

DL-thiomalic acid

Conditions
ConditionsYield
With sodium hydroxide
dehydropseudothiohydantoinacetic acid

dehydropseudothiohydantoinacetic acid

DL-thiomalic acid
70-49-5

DL-thiomalic acid

Conditions
ConditionsYield
With sodium amalgam
dextrorotatory dimethylcarbaminothiomalic acid

dextrorotatory dimethylcarbaminothiomalic acid

DL-thiomalic acid
70-49-5

DL-thiomalic acid

Conditions
ConditionsYield
With hydrogenchloride at 20℃; dextrorotatory form;
With sulfuric acid at 20℃; dextrorotatory form;
d lactonemalic acid

d lactonemalic acid

DL-thiomalic acid
70-49-5

DL-thiomalic acid

Conditions
ConditionsYield
With potassium hydrosulfide levorotatory thiomalic acid;
N.N'-diphenyl-pseudothiohydantoin-acetic acid

N.N'-diphenyl-pseudothiohydantoin-acetic acid

DL-thiomalic acid
70-49-5

DL-thiomalic acid

Conditions
ConditionsYield
With barium dihydroxide
potassium salt of/the/ l-bromosuccinic acid

potassium salt of/the/ l-bromosuccinic acid

DL-thiomalic acid
70-49-5

DL-thiomalic acid

Conditions
ConditionsYield
With water; potassium hydrosulfide levorotatory thiomalic acid;
With water; potassium hydrosulfide dextrorotatory thiomalic acid;
potassium salt of/the/ levorotatory bromosuccinic acid

potassium salt of/the/ levorotatory bromosuccinic acid

DL-thiomalic acid
70-49-5

DL-thiomalic acid

Conditions
ConditionsYield
With potassium hydrosulfide dextrorotatory form;
With potassium hydrosulfide levorotatory form;
pseudohydantoinacetic acid

pseudohydantoinacetic acid

DL-thiomalic acid
70-49-5

DL-thiomalic acid

Conditions
ConditionsYield
With barium dihydroxide
ethylcarbamoylsulfanyl-succinic acid
89776-00-1

ethylcarbamoylsulfanyl-succinic acid

ammonia
7664-41-7

ammonia

DL-thiomalic acid
70-49-5

DL-thiomalic acid

Conditions
ConditionsYield
dextrorotatory S-ethylaminoformyl-thiomalic acid;
ethylcarbamoylsulfanyl-succinic acid
89776-00-1

ethylcarbamoylsulfanyl-succinic acid

alkali

alkali

DL-thiomalic acid
70-49-5

DL-thiomalic acid

Conditions
ConditionsYield
dextrorotatory S-ethylaminoformyl-thiomalic acid;
(R)-ethoxythiocarbonylmercapto-succinic acid
197433-30-0

(R)-ethoxythiocarbonylmercapto-succinic acid

aqueous alcoholic ammonia

aqueous alcoholic ammonia

DL-thiomalic acid
70-49-5

DL-thiomalic acid

Conditions
ConditionsYield
at 0℃;
disodium maleate

disodium maleate

A

DL-thiomalic acid
70-49-5

DL-thiomalic acid

B

thiodisuccinic acid
4917-76-4

thiodisuccinic acid

Conditions
ConditionsYield
With sodium hydrogensulfide; water
hydrogenchloride
7647-01-0

hydrogenchloride

ethylcarbamoylsulfanyl-succinic acid
89776-00-1

ethylcarbamoylsulfanyl-succinic acid

A

DL-thiomalic acid
70-49-5

DL-thiomalic acid

B

racemic 3-ethyl-2.4-dioxo-thiazolidin-acetic acid-(5)

racemic 3-ethyl-2.4-dioxo-thiazolidin-acetic acid-(5)

Conditions
ConditionsYield
dextrorotatory S-ethylaminoformyl-thiomalic acid;
potassium hydrosulfide

potassium hydrosulfide

(R)-2-hydroxy-succinic acid-4-lactone
177019-47-5

(R)-2-hydroxy-succinic acid-4-lactone

DL-thiomalic acid
70-49-5

DL-thiomalic acid

2-butenedioic acid
6915-18-0

2-butenedioic acid

DL-thiomalic acid
70-49-5

DL-thiomalic acid

Conditions
ConditionsYield
With ammonium hydroxide; sodium periodate; hydrogen sulfide; acetic acid; cellulose In ethanol at 80℃; under 3750.38 Torr; Michael Addition;
DL-thiomalic acid
70-49-5

DL-thiomalic acid

3,4-dithia-hexane-1,2,5,6-tetracarboxylic acid
3384-95-0

3,4-dithia-hexane-1,2,5,6-tetracarboxylic acid

Conditions
ConditionsYield
With 3,6-di(2'-pyridyl)-1,2,4,5-tetrazine In water at 40℃; for 0.05h; Temperature;99%
With dihydrogen peroxide In ethanol; water at 20℃; for 0.166667h; Catalytic behavior; Solvent; Reagent/catalyst; Green chemistry;99%
With dihydrogen peroxide In water; ethyl acetate at 20℃; for 0.583333h; Green chemistry;99%
DL-thiomalic acid
70-49-5

DL-thiomalic acid

bis(1,2-dicarboxyethanethio)tellurium(II)

bis(1,2-dicarboxyethanethio)tellurium(II)

Conditions
ConditionsYield
With tellurium oxide; sodium hydroxide99%
DL-thiomalic acid
70-49-5

DL-thiomalic acid

benzylacrylate
2495-35-4

benzylacrylate

C14H16O6S

C14H16O6S

Conditions
ConditionsYield
With triethylamine In acetonitrile at 20℃; for 48h;99%
DL-thiomalic acid
70-49-5

DL-thiomalic acid

4-allylguaiacol
97-53-0

4-allylguaiacol

C14H18O6S

C14H18O6S

Conditions
ConditionsYield
With 2-hydroxy-2-methylpropiophenone In 1,4-dioxane; ethanol at 20℃; for 50h; UV-irradiation;98%
With benzoin dimethyl ether at 20℃; for 1h; UV-irradiation;
DL-thiomalic acid
70-49-5

DL-thiomalic acid

thiodisuccinic acid
4917-76-4

thiodisuccinic acid

Conditions
ConditionsYield
With dihydrogen peroxide In ethanol; water at 20℃; for 0.0833333h; Solvent; Time; Green chemistry;98%
DL-thiomalic acid
70-49-5

DL-thiomalic acid

PTPBA

PTPBA

C20H20O6S2

C20H20O6S2

Conditions
ConditionsYield
With triethylamine In acetonitrile at 50℃; for 0.75h;97%
DL-thiomalic acid
70-49-5

DL-thiomalic acid

2-Ethylhexyl alcohol
104-76-7

2-Ethylhexyl alcohol

bis(2-ethylhexyl) mercaptosuccinate
65291-46-5

bis(2-ethylhexyl) mercaptosuccinate

Conditions
ConditionsYield
With sulfuric acid In benzene for 3h; Heating / reflux;94.5%
DL-thiomalic acid
70-49-5

DL-thiomalic acid

(Et4N)2[MoFe3S4Cl3(tetrachlorocatecholate)] * MeCN

(Et4N)2[MoFe3S4Cl3(tetrachlorocatecholate)] * MeCN

4(CH3CH2)4N(1+)*[MoFe3S4Cl3(SCH(CH2COOH)COO)]2(4-) = [(CH3CH2)4N]4[MoFe3S4Cl3(SCH(CH2COOH)COO)]2

4(CH3CH2)4N(1+)*[MoFe3S4Cl3(SCH(CH2COOH)COO)]2(4-) = [(CH3CH2)4N]4[MoFe3S4Cl3(SCH(CH2COOH)COO)]2

Conditions
ConditionsYield
In acetonitrile absence of air and moisture; slow addn. of stoich. amt. of thiomalic acid to soln. of Mo-complex, stirring for 1 h; filtration, addn. of ether, standing for 5 h, dissoln. of oil in MeCN, pptn. on addn. of ether, filtration, washing (EtOH, Me2CO, ether), drying (vac.); elem. anal.;94%
DL-thiomalic acid
70-49-5

DL-thiomalic acid

p,p'-Bis(benzalhydrazinocarbonylmethylamino)diphenylsulphone
114710-06-4

p,p'-Bis(benzalhydrazinocarbonylmethylamino)diphenylsulphone

p,p'-Bis(5-carboxymethyl-4-oxo-2-phenylthiazolidin-3-ylamidomethylamino)diphenylsulphone
114710-45-1

p,p'-Bis(5-carboxymethyl-4-oxo-2-phenylthiazolidin-3-ylamidomethylamino)diphenylsulphone

Conditions
ConditionsYield
at 160℃; for 2h;93%
DL-thiomalic acid
70-49-5

DL-thiomalic acid

thiourea
17356-08-0

thiourea

4-dimethylamino-benzaldehyde
100-10-7

4-dimethylamino-benzaldehyde

2-(4-dimethylaminophenyl)-3-thiocarbamoylthiazolidin-4-one-5-ylacetic acid

2-(4-dimethylaminophenyl)-3-thiocarbamoylthiazolidin-4-one-5-ylacetic acid

Conditions
ConditionsYield
With zinc(II) chloride In tetrahydrofuran; ethanol for 10h; Reflux;93%
DL-thiomalic acid
70-49-5

DL-thiomalic acid

phenylhydrazine
100-63-0

phenylhydrazine

4-dimethylamino-benzaldehyde
100-10-7

4-dimethylamino-benzaldehyde

2-(4-dimethylaminophenyl)-3-phenylaminothiazolidine-4-one-5ylacetic acid

2-(4-dimethylaminophenyl)-3-phenylaminothiazolidine-4-one-5ylacetic acid

Conditions
ConditionsYield
With zinc(II) chloride In tetrahydrofuran; ethanol for 10h; Reflux;93%
DL-thiomalic acid
70-49-5

DL-thiomalic acid

monovinylheptaisobutylsilsesquioxane
444315-18-8

monovinylheptaisobutylsilsesquioxane

C34H72O16SSi8

C34H72O16SSi8

Conditions
ConditionsYield
With 2,2-dimethoxy-2-phenylacetophenone In tetrahydrofuran for 0.166667 - 0.5h; UV-irradiation;93%
With 2,2'-azobis(isobutyronitrile) In tetrahydrofuran at 60℃; for 10h;90%
DL-thiomalic acid
70-49-5

DL-thiomalic acid

4-propyl-cyclohexanone
40649-36-3

4-propyl-cyclohexanone

adamantane-1-carbohydrazide
17846-15-0

adamantane-1-carbohydrazide

[4‐(adamantane‐1‐carboxamido)‐3‐oxo‐8‐propyl‐1‐thia‐4‐azaspiro‐[4.5]decan‐2‐yl]acetic acid

[4‐(adamantane‐1‐carboxamido)‐3‐oxo‐8‐propyl‐1‐thia‐4‐azaspiro‐[4.5]decan‐2‐yl]acetic acid

Conditions
ConditionsYield
Stage #1: 4-propyl-cyclohexanone; adamantane-1-carbohydrazide In toluene at 120℃; for 2h; Dean-Stark;
Stage #2: DL-thiomalic acid In toluene at 120℃; Dean-Stark;
93%
DL-thiomalic acid
70-49-5

DL-thiomalic acid

(5-chloro-2-neopentylamino-phenyl)-naphthalen-1-yl-methanol
180346-15-0

(5-chloro-2-neopentylamino-phenyl)-naphthalen-1-yl-methanol

(-)-trans-7-chloro-5-(1-naphthyl)-1-neopentyl-2-oxo-1,2,3,5-tetrahydro-4,1-benzothiazepin-3-acetic acid

(-)-trans-7-chloro-5-(1-naphthyl)-1-neopentyl-2-oxo-1,2,3,5-tetrahydro-4,1-benzothiazepin-3-acetic acid

Conditions
ConditionsYield
With propionic acid92%
DL-thiomalic acid
70-49-5

DL-thiomalic acid

C69H136O2Si7

C69H136O2Si7

C101H184O34S8Si7

C101H184O34S8Si7

Conditions
ConditionsYield
With 2,2-dimethoxy-2-phenylacetophenone In tetrahydrofuran; methanol for 2h; Inert atmosphere; UV-irradiation;92%
DL-thiomalic acid
70-49-5

DL-thiomalic acid

5-(3-formyl-4-methoxybenzyl)-2-methoxybenzaldehyde
19782-48-0

5-(3-formyl-4-methoxybenzyl)-2-methoxybenzaldehyde

4-amino-phenol
123-30-8

4-amino-phenol

2-[2-(5-3-[5-(carboxymethyl)-3-(4-hydroxyphenyl)-4-oxo-1,3-thiazolan-2-yl]-4-methoxybenzyl-2-methoxyphenyl)-3-(4-hydroxyphenyl)-4-oxo-1,3-thiazolan-5-yl]acetic acid
1050436-10-6

2-[2-(5-3-[5-(carboxymethyl)-3-(4-hydroxyphenyl)-4-oxo-1,3-thiazolan-2-yl]-4-methoxybenzyl-2-methoxyphenyl)-3-(4-hydroxyphenyl)-4-oxo-1,3-thiazolan-5-yl]acetic acid

Conditions
ConditionsYield
With zinc(II) chloride In toluene at 110℃; for 0.05h; microwave irradiation;91%
DL-thiomalic acid
70-49-5

DL-thiomalic acid

acetyl chloride
75-36-5

acetyl chloride

s-acetylmercaptosuccinic anhydride
6953-60-2

s-acetylmercaptosuccinic anhydride

Conditions
ConditionsYield
for 3h; Reflux;91%
DL-thiomalic acid
70-49-5

DL-thiomalic acid

4-dimethylamino-benzaldehyde
100-10-7

4-dimethylamino-benzaldehyde

urea
57-13-6

urea

2-(3-carbamoyl-2-(4-(dimethylamino)phenyl)-4-oxothiazolidin-5-yl)acetic acid

2-(3-carbamoyl-2-(4-(dimethylamino)phenyl)-4-oxothiazolidin-5-yl)acetic acid

Conditions
ConditionsYield
With zinc(II) chloride In tetrahydrofuran; ethanol for 10h; Reflux;91%
DL-thiomalic acid
70-49-5

DL-thiomalic acid

4-dimethylamino-benzaldehyde
100-10-7

4-dimethylamino-benzaldehyde

(2,4-dinitro-phenyl)-hydrazine
119-26-6

(2,4-dinitro-phenyl)-hydrazine

2-(4-dimethylaminophenyl)-3-(2,4-dinitrophenylamino)thiazolidin-4-one-5-ylacetic acid

2-(4-dimethylaminophenyl)-3-(2,4-dinitrophenylamino)thiazolidin-4-one-5-ylacetic acid

Conditions
ConditionsYield
With zinc(II) chloride In tetrahydrofuran; ethanol for 10h; Reflux;91%
DL-thiomalic acid
70-49-5

DL-thiomalic acid

hematoporphyrin IX dihydrochloride
17696-69-4

hematoporphyrin IX dihydrochloride

7,12-bis<1-<(1,2-dicarboxyethyl)thio>ethyl>-3,8,13,17-tetramethyl-21H,23H-porphine-2,18-dipropanoic acid

7,12-bis<1-<(1,2-dicarboxyethyl)thio>ethyl>-3,8,13,17-tetramethyl-21H,23H-porphine-2,18-dipropanoic acid

Conditions
ConditionsYield
With L-valine; acetic acid for 0.666667h; Ambient temperature;90%
DL-thiomalic acid
70-49-5

DL-thiomalic acid

1,6,19,24-Tetraoxa-2,5,20,23-tetraoxocyclohexatriconta-3,21-diene
81847-18-9

1,6,19,24-Tetraoxa-2,5,20,23-tetraoxocyclohexatriconta-3,21-diene

2-(2,5,20,23-Tetraoxo-1,6,19,24-tetraoxa-cyclohexatriacont-3-ylsulfanyl)-succinic acid
81847-21-4

2-(2,5,20,23-Tetraoxo-1,6,19,24-tetraoxa-cyclohexatriacont-3-ylsulfanyl)-succinic acid

Conditions
ConditionsYield
90%
DL-thiomalic acid
70-49-5

DL-thiomalic acid

2-chloro-7-cyclopropyl-4,7-dihydro-3-nitro-4-oxothieno<2,3-b>pyridine-5-carboxylic acid
276693-71-1

2-chloro-7-cyclopropyl-4,7-dihydro-3-nitro-4-oxothieno<2,3-b>pyridine-5-carboxylic acid

C15H12N2O9S2

C15H12N2O9S2

Conditions
ConditionsYield
With triethylamine In water; acetone at 20℃; for 7h;90%
DL-thiomalic acid
70-49-5

DL-thiomalic acid

N-cyclohexylidene-p-toluidine
36132-68-0

N-cyclohexylidene-p-toluidine

C17H21NO3S
1133274-41-5

C17H21NO3S

Conditions
ConditionsYield
With zinc(II) chloride at 160℃;90%
DL-thiomalic acid
70-49-5

DL-thiomalic acid

C17H18ClN3O5

C17H18ClN3O5

4-amino-phenol
123-30-8

4-amino-phenol

2-(2-((3aR,5S,6S,6aR)-6-((1-(4-chlorophenyl)-1H-1,2,3-triazol-4-yl)methoxy)-2,2-dimethyltetrahydrofuro[2,3-d][1,3]dioxol-5-yl)-3-(4-hydroxyphenyl)-4-oxothiazolidin-5-yl)acetic acid

2-(2-((3aR,5S,6S,6aR)-6-((1-(4-chlorophenyl)-1H-1,2,3-triazol-4-yl)methoxy)-2,2-dimethyltetrahydrofuro[2,3-d][1,3]dioxol-5-yl)-3-(4-hydroxyphenyl)-4-oxothiazolidin-5-yl)acetic acid

Conditions
ConditionsYield
With zinc(II) chloride In toluene for 0.0666667h; Microwave irradiation;90%
With zinc(II) chloride In toluene at 110℃; for 0.0666667h; Microwave irradiation;79%
DL-thiomalic acid
70-49-5

DL-thiomalic acid

C37H80O12Si8

C37H80O12Si8

C41H86O16SSi8

C41H86O16SSi8

Conditions
ConditionsYield
With 2,2'-azobis(isobutyronitrile) In tetrahydrofuran at 90℃; for 10h;90%
DL-thiomalic acid
70-49-5

DL-thiomalic acid

C38H82O12Si8

C38H82O12Si8

C42H88O16SSi8

C42H88O16SSi8

Conditions
ConditionsYield
With 2,2'-azobis(isobutyronitrile) In tetrahydrofuran at 90℃; for 10h;90%
DL-thiomalic acid
70-49-5

DL-thiomalic acid

(3aS,4S,6S,6aS)-6-((1-(4-chlorophenyl)-1H-1,2,3-triazol-4-yl)methoxy)-2,2-dimethyltetrahydrofuro[3,4-d][1,3]dioxole-4-carbaldehyde

(3aS,4S,6S,6aS)-6-((1-(4-chlorophenyl)-1H-1,2,3-triazol-4-yl)methoxy)-2,2-dimethyltetrahydrofuro[3,4-d][1,3]dioxole-4-carbaldehyde

4-amino-phenol
123-30-8

4-amino-phenol

2-(2-((3aR,4S,6S,6aS)-6-((1-(4-chlorophenyl)-1H-1,2,3-triazol-4-yl)methoxy)-2,2-dimethyltetrahydrofuro[3,4-d][1,3]dioxol-4-yl)-3-(4-hydroxyphenyl)-4-oxothiazolidin-5-yl)acetic acid

2-(2-((3aR,4S,6S,6aS)-6-((1-(4-chlorophenyl)-1H-1,2,3-triazol-4-yl)methoxy)-2,2-dimethyltetrahydrofuro[3,4-d][1,3]dioxol-4-yl)-3-(4-hydroxyphenyl)-4-oxothiazolidin-5-yl)acetic acid

Conditions
ConditionsYield
With zinc(II) chloride In toluene at 110℃; for 0.0666667h; Microwave irradiation;90%
DL-thiomalic acid
70-49-5

DL-thiomalic acid

C44H38O12Si8

C44H38O12Si8

C48H44O16SSi8

C48H44O16SSi8

Conditions
ConditionsYield
With 2,2'-azobis(isobutyronitrile) In tetrahydrofuran at 60℃; for 10h;90%
DL-thiomalic acid
70-49-5

DL-thiomalic acid

C44H80O12Si8
230316-01-5

C44H80O12Si8

C48H86O16SSi8

C48H86O16SSi8

Conditions
ConditionsYield
With 2,2'-azobis(isobutyronitrile) In tetrahydrofuran at 60℃; for 10h;90%
DL-thiomalic acid
70-49-5

DL-thiomalic acid

7,17-dimethyl-7,17-divinyl-1,3,5,9,11,13,15,1-octaphenylhexacyclo[9.13.11,9 .13,15 .15,13 .111,19 ]decasiloxane

7,17-dimethyl-7,17-divinyl-1,3,5,9,11,13,15,1-octaphenylhexacyclo[9.13.11,9 .13,15 .15,13 .111,19 ]decasiloxane

C62H64O22S2Si10

C62H64O22S2Si10

Conditions
ConditionsYield
With 2,2'-azobis(isobutyronitrile) In tetrahydrofuran at 60℃; for 10h;90%

70-49-5Relevant articles and documents

Green method for synthesizing high value-added mercaptoacid by catalyzing addition reaction of H2S and olefine acid by using ionic liquid as catalyst

-

Paragraph 0041; 0049-0050; 0053-0054; 0057-0059, (2021/05/05)

The invention relates to a green method integrating catalysis, reaction and separation, which is used for producing beta-mercapto carboxylic acid through addition of alpha, beta-unsaturated carboxylic acid and H2S by taking amino-functionalized hydrophobic ionic liquid as a catalyst. H2S is activated through tertiary amine alkaline sites contained in the ionic liquid, so that H2S and double bonds of alpha, beta-unsaturated carboxylic acid are subjected to an addition reaction, and recycling of H2S is realized. The product obtained after the reaction can be subjected to water phase liquid-liquid extraction to realize separation of the catalyst and the product, and the ionic liquid can be recycled. In the system, the ionic liquid is both a catalytic medium and a reaction medium, no other organic solvent participates in the system, H2S is efficiently utilized, meanwhile, high-added-value products such as mercapto acid are obtained, and the method is more economical and environmentally friendly and conforms to the development concept of green chemical industry.

Preparation method of beta-sulfhydryl carboxylic acid compound

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Paragraph 0070; 0075; 0076; 0088, (2018/06/26)

The invention provides a preparation method of a beta-sulfhydryl carboxylic acid compound. A solid base catalyst used in the method has suitable alkali strength, so that not only is hydrogen sulfide enabled to be activated and a reaction promoted to be carried out, but the binding between carboxyl groups and active sites in raw materials or products is also inhibited, and the active sites are prevented from being deactivated slowly. Furthermore, the solid base catalyst selects a polyhydroxy compound as a carrier, and a great deal of hydroxyl groups on the surface of the carrier can promote thehydrogen sulfide to be dissolved in a reaction system and adsorbed on the surface of the catalyst so as to enable the hydrogen sulfide to be migrated to the positions around the active sites for being activated, so that the high conversion rate and high selectivity of the reaction also can be enabled to be reached at the lower pressure, and the catalytic stability is better. In addition, the preparation method is mild in reaction conditions, and the gas-liquid phase reaction is carried out under the conditions of low temperature and low pressure, so that the method is easily applied to industry. Experiments prove that the reaction conversion rate and selectivity of the beta-sulfhydryl carboxylic acid compound prepared by the method are respectively not less than 98% and 88%. After the compound is continuously evaluated for 100h, the catalytic stability of the compound is proved to be better.

Carbodiimides comprising thiocarbamide acid ester groups

-

, (2008/06/13)

Thiocarbamides comprising at least one carbodiimide group and at least one thiocarbamic ester group of the formula

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