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52-89-1

Basic Information
CAS No.: 52-89-1
Name: L-Cysteine hydrochloride anhydrous
Article Data: 8
Cas Database
Molecular Structure:
Molecular Structure of 52-89-1 (L-Cysteine hydrochloride anhydrous)
Formula: C3H8ClNO2S
Molecular Weight: 157.621
Synonyms: (R)-Cysteine hydrochloride;Cysteine monohydrochloride;3-Mercaptoalanine hydrochloride;Cysteine chlorohydrate;(2R)-2-amino-3-sulfanyl-propanoic acid hydrochloride;Cysteine, L-, monohydrochloride;L-(+ )-Cysteine hydrochloride;L-Cysteine HCl Anhydrous;L-Cysteine HCl Anhy;(R)-Cysteine-hydrochloride;L-(+)-Cysteine hydrochloride;L-2-Amino-3-mercaptopropanoic acid monohydrochloride;H-Cys-OH.HCl;L- Cysteine Hydrochloride Anhydrous;L-Cysteine hydrochloride monohydrate;L-Cysteine HCL anhydrouse;
EINECS: 200-157-7
Density: N/A
Melting Point: 180 ºC
Boiling Point: 293.9 ºC at 760 mmHg
Flash Point: 131.5 ºC
Solubility: soluble in water
Appearance: white solid
Hazard Symbols: IrritantXi
Risk Codes: 36/37/38
Safety: 26-36
Transport Information: N/A
PSA: 102.12000
LogP: 0.83040
Synthetic route
2519-89-3, 6436-58-4, 15263-39-5, 45789-42-2

(3R)-2-methyl-4,5-dihydrothiazole-4-carboxylic acid methyl ester

52-89-1

l-cysteine hydrochloride

Conditions
ConditionsYield
With hydrogenchloride; water for 24h; Inert atmosphere; Reflux;94%
120033-48-9

N-(tert-butoxycarbonyl)-S-(N-methylcarbamoyl)cysteine methyl ester

A

52-89-1

l-cysteine hydrochloride

B

120033-46-7

S-(N-methylcarbamoyl)cysteine hydrochloride

Conditions
ConditionsYield
With hydrogenchloride for 168h;A 15%
B 83%
62982-12-1

S-(diphenyl-4-pyridylmethyl)-L-cysteine

A

1620-30-0

diphenyl(pyridin-4-yl)methanol

B

52-89-1

l-cysteine hydrochloride

Conditions
ConditionsYield
With mercury(II) diacetate In water; acetic acid for 0.25h; Product distribution; other reagent (zinc dust, 80percent acetic acid, 15 min);
1447695-69-3

cycloforskamide

A

C5H9NO2*ClH

B

52-89-1

l-cysteine hydrochloride

C

17498-50-9, 25616-14-2, 31320-20-4

L-valine hydrochloride

D

17694-98-3

L-isoleucine hydrochloride

F

D-alloisoleucine hydrochloride

Conditions
ConditionsYield
With hydrogenchloride; water at 110℃; for 24h;
52-89-1

l-cysteine hydrochloride

100-52-7

benzaldehyde

196930-46-8

(4R)-2-phenyl-1,3-thiazolidine-4-carboxylic acid

Conditions
ConditionsYield
Stage #1: l-cysteine hydrochloride With sodium hydroxide In water
Stage #2: benzaldehyde In ethanol; water at 20℃; for 3h;
100%
With potassium acetate In methanol; water at 0 - 25℃; for 6h;98%
Stage #1: l-cysteine hydrochloride With potassium carbonate In water
Stage #2: benzaldehyde In methanol; water at 25℃; for 3h;
98%
71532-40-6

(9H-fluoren-9-yl)methyl 4-methylbenzenesulfonaye

52-89-1

l-cysteine hydrochloride

84888-38-0

(R)-9H-fluorenyl-9-methyl-L-cysteine

Conditions
ConditionsYield
With N-ethyl-N,N-diisopropylamine In N,N-dimethyl-formamide100%
50-00-0

formaldehyd

52-89-1

l-cysteine hydrochloride

67089-84-3

(R)-thiazolidine-4-carboxylic acid hydrochloride

Conditions
ConditionsYield
at 20℃; for 1h; Solid phase reaction; cyclocondensation;100%
Stage #1: formaldehyd; l-cysteine hydrochloride With sodium hydroxide In water at 20℃; for 24h;
Stage #2: With pyridine In ethanol; water at 0℃;
80%
52-89-1

l-cysteine hydrochloride

100-47-0

benzonitrile

19983-15-4, 116179-34-1, 62096-93-9

(4R)-2-phenyl-4,5-dihydro-1,3-thiazole-4-carboxylic acid

Conditions
ConditionsYield
With sodium hydrogencarbonate In methanol at 70℃; pH=7; aq. phosphate buffer; Inert atmosphere;99%
With sodium hydrogencarbonate In methanol; aq. phosphate buffer for 72h; pH=6; Reflux;73%
With piperidine; sodium hydrogencarbonate In ethanol
26555-40-8

Methoxycarbonylsulfenyl chloride

52-89-1

l-cysteine hydrochloride

S-(methoxycarbonylsulfenyl)cysteine hydrochloride

Conditions
ConditionsYield
With hydrogenchloride In methanol at 0℃; for 1h;99%
611-20-1

salicylonitrile

52-89-1

l-cysteine hydrochloride

115921-06-7

(R)-2-(2-hydroxyphenyl)-4,5-dihydro-1,3-thiazole-4-carboxylic acid

Conditions
ConditionsYield
With sodium hydrogencarbonate In methanol; aq. phosphate buffer for 72h; pH=6; Reflux;99%
Stage #1: salicylonitrile; l-cysteine hydrochloride With sodium hydrogencarbonate In ethanol for 0.5h; Heating;
Stage #2: With piperidine In ethanol for 12h; pH=9; Heating;
Stage #3: With hydrogenchloride In ethanol pH=1.5;
67%
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    L-Cysteine Hydrochloride Anhydrous(Animal derived /Non-animal derived ) CAS No.:52-89-1 Authentication:HALAL,KOSHER,SC Quality Standard :AJI Molecular formula :C3H7NO2S·HCl Molecular weight :157.62 Description :Pharmaceutical intermediat

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Specification

1. Introduction of L-Cysteine hydrochloride anhydrous

L-Cysteine hydrochloride anhydrous (CAS No. 52-89-1), with the IUPAC Name of (2R)-2-Amino-3-sulfanylpropanoic acid hydrochloride, is one kind of white crystalline powder. And this chemical belongs to the Classification Code which include Drug / Therapeutic Agent; Mutation data. For being stable under normal shipping and handling conditions, this chemical is incompatible with strong oxidizing agents, metals. And the decomposition information are as below: Hydrogen chloride, nitrogen oxides, carbon monoxide, oxides of sulfur, carbon dioxide, nitrogen. 
 
2. Properties of L-Cysteine hydrochloride anhydrous

L-Cysteine hydrochloride anhydrous has the following datas: (1)Melting point: 180°C; (2)H bond acceptors: 3; (3)H bond donors: 3; (4)Freely Rotating Bonds: 4; (5)Polar Surface Area: 54.84 ?2; (6)Flash Point: 131.5 °C; (7)Enthalpy of Vaporization: 58.69 kJ/mol; (8)Boiling Point: 293.9 °C at 760 mmHg; (9)Vapour Pressure: 0.000411 mmHg at 25°C.

3. Structure Descriptors of L-Cysteine hydrochloride anhydrous

You could convert the following datas into the molecular structure:
(1). InChI: InChI=1S/C3H7NO2S.ClH/c4-2(1-7)3(5)6;/h2,7H,1,4H2,(H,5,6);1H/t2-;/m0./s1
(2). InChIKey: InChIKey=IFQSXNOEEPCSLW-DKWTVANSSA-N
(3). Smiles: C([C@H](CS)N)(O)=O.Cl

4. Toxicity of L-Cysteine hydrochloride anhydrous

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LD50 intraperitoneal 1250mg/kg (1250mg/kg)   National Technical Information Service. Vol. AD691-490,
mouse LD50 intravenous 771mg/kg (771mg/kg)   Japanese Journal of Antibiotics. Vol. 38, Pg. 137, 1985.
 
mouse LD50 unreported 3gm/kg (3000mg/kg)   British Journal of Cancer. Vol. 6, Pg. 160, 1952.
 

5. Safety Information of L-Cysteine hydrochloride anhydrous

Moderately toxic by intraperitoneal, intravenous, and possibly other routes. Mutation data reported. When heated to decomposition it emits very toxic fumes of NOx, SOx, and Cl−.
Safety Information of L-Cysteine hydrochloride (CAS NO.52-89-1)
Hazard Codes: Xi
Risk Statements: 36/37/38
R36/37/38: Irritating to eyes, respiratory system and skin.
Safety Statements: 26-36
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
S36: Wear suitable protective clothing.
WGK Germany: 2
RTECS: HA2275000
F: 3-10-23

Following are some specific dangerous cases and their according measures:
Ingestion:If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
Inhalation:Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
Skin:Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
Eyes:Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.
Handling and Storage:
Storage:Keep container closed when not in use. Store in a cool, dry, well-ventilated area away from incompatible substances. Do not store in metal containers. Store protected from moisture. Store protected from light and air.
Handling:Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Avoid ingestion and inhalation. Use with adequate ventilation.

6. Use of L-Cysteine hydrochloride anhydrous

L-Cysteine hydrochloride anhydrous can be usde for the treatment of radioactive drug poisoning, heavy metal poisoning, toxic hepatitis, serum sickness, etc.,and also can prevent the liver necrosis.Besides.it is used as perm for fine cosmetics, sunscreen, germinal perfume, raise fa in composition; can be used as food additives, vitamin C to prevent oxidation and discoloration; for the bread to promote the formation of protein and fermentation of grain, out of molds.

7. Production of L-Cysteine hydrochloride anhydrous

L-Cysteine hydrochloride anhydrous can produced by using L-cystine as raw materials and using stannous chloride in hydrochloric acid medium to restore, and then derived from refined crystal.