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1918-77-0

Basic Information
CAS No.: 1918-77-0
Name: 2-Thiopheneacetic acid
Article Data: 51
Molecular Structure:
Molecular Structure of 1918-77-0 (2-Thiopheneacetic acid)
Formula: C6H6O2S
Molecular Weight: 142.178
Synonyms: 2-(2-Thienyl)aceticacid;2-(Thiophen-2-yl)acetic acid;2-Thienylethanoicacid;Thiophen-2-ylacetic acid;
EINECS: 217-639-8
Density: 1.336 g/cm3
Melting Point: 63-64 °C(lit.)
Boiling Point: 269.2 °C at 760 mmHg
Flash Point: 116.6 °C
Solubility: Soluble in water, ethanol, ether and carbon tetrachloride.
Appearance: white to light yellow crystal powder
Hazard Symbols: CorrosiveC,IrritantXi
Risk Codes: 34-37-36/37/38
Safety: 26-36/37/39-45-24/25-27
Transport Information: UN 3261 8/PG 2
PSA: 65.54000
LogP: 1.37520
Synthetic route
57382-97-5

ethyl thiophen-2-ylacetate

1918-77-0

Thiophene-2-acetic acid

Conditions
ConditionsYield
With water; sodium hydroxide In ethanol at 20℃; for 1h;100%
With water; sodium hydroxide In ethanol at 20℃; for 1h;100%
5402-55-1

2-thiophenethanol

1918-77-0

Thiophene-2-acetic acid

Conditions
ConditionsYield
With oxygen; triethylamine at 80℃; for 15h; Reagent/catalyst; Temperature;96.5%
With Iron(III) nitrate nonahydrate; 2,2,6,6-Tetramethyl-1-piperidinyloxy free radical; potassium chloride; oxygen In 1,2-dichloro-ethane at 25℃; for 12h;85%
With sodium hypochlorite; 2,2,6,6-Tetramethyl-1-piperidinyloxy free radical In aq. phosphate buffer; water; acetonitrile at 35℃; for 6h; Catalytic behavior; Reagent/catalyst; Temperature; Green chemistry;85%
With iridium hexafluoride; sulphate-doped anatase; potassium oxide In dichloromethane at 85℃; Temperature;
19432-68-9

methyl 2-thiopheneacetate

1918-77-0

Thiophene-2-acetic acid

Conditions
ConditionsYield
With sodium hydroxide for 2h; Heating;94%
35320-27-5

2,2,2-trichloro-1-(thien-2-yl)-ethanol

1918-77-0

Thiophene-2-acetic acid

Conditions
ConditionsYield
Stage #1: 2,2,2-trichloro-1-(thien-2-yl)-ethanol With sodium tetrahydroborate; diphenyl diselenide In ethanol Inert atmosphere;
Stage #2: With sodium hydroxide In ethanol at 40℃; Inert atmosphere;
94%
20893-30-5

2-cyanomethylthiophene

1918-77-0

Thiophene-2-acetic acid

Conditions
ConditionsYield
With sodium hydroxide In water for 5h; Reflux;93.4%
With water; potassium hydroxide In ethanol for 3h; Inert atmosphere; Reflux;74%
With potassium hydroxide
89244-23-5, 89244-24-6

N-((E)-1-Cyano-2-thiophen-2-yl-vinyl)-4,N-dimethyl-benzamide

1918-77-0

Thiophene-2-acetic acid

Conditions
ConditionsYield
With hydrogenchloride In tetrahydrofuran for 6h; Heating;89%
5371-94-8

2-methoxy-2-(thiophen-2-yl)acetic acid

1918-77-0

Thiophene-2-acetic acid

Conditions
ConditionsYield
With sodium chloride; iodine In water; acetic acid; ethyl acetate86%
91668-56-3

α-(N-Methylanilino)-β-(2-thienyl)acrylonitrile

1918-77-0

Thiophene-2-acetic acid

Conditions
ConditionsYield
With hydrogenchloride In tetrahydrofuran for 10h; Heating;83%
15504-41-3

2-oxo-3-(thiophen-2-yl)propanoic acid

1918-77-0

Thiophene-2-acetic acid

Conditions
ConditionsYield
With sodium perborate In water for 48h; Ambient temperature;68%
98-03-3

thiophene-2-carbaldehyde

75-25-2

Bromoform

75-08-1

ethanethiol

1918-77-0

Thiophene-2-acetic acid

Conditions
ConditionsYield
With potassium hydroxide In diethyl ether; water; dimethyl sulfoxide58%
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    1918-77-0

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Chemistry


IUPAC Name: 2-Thiophen-2-ylacetic acid
Canonical SMILES: C1=CSC(=C1)CC(=O)O
InChI: InChI=1S/C6H6O2S/c7-6(8)4-5-2-1-3-9-5/h1-3H,4H2,(H,7,8)
InChIKey: SMJRBWINMFUUDS-UHFFFAOYSA-N
Molecular Weight: 142.17564 [g/mol]
Molecular Formula: C6H6O2S
XLogP3: 1
H-Bond Donor: 1
H-Bond Acceptor: 2 
EINECS: 217-639-8 
Index of Refraction: 1.587
Molar Refractivity: 35.75 cm3
Molar Volume: 106.3 cm3
Surface Tension: 54.3 dyne/cm
Density: 1.336 g/cm3
Flash Point: 116.6 °C
Enthalpy of Vaporization: 53.59 kJ/mol
Boiling Point: 269.2 °C at 760 mmHg
Vapour Pressure: 0.00363 mmHg at 25 °C
Appearance: white to light yellow crystal powder
Melting Point: 63-64 °C(lit.)
Product Categories: Drug Intermediates; Heterocycles; Thiophene&Benzothiophene; Organic acids; Thiophens; Cephaloridine

Uses

 2-Thiopheneacetic acid (CAS NO.1918-77-0) is used as pharmaceutical intermediates to product cefaloridine, Cefalotin sodium,etc.

Safety Profile

Safety Information of 2-Thiopheneacetic acid (CAS NO.1918-77-0):
Hazard Codes:C  ,Xi
Risk Statements:34-37-36/37/38
34:Causes burns 
37:Irritating to the respiratory system 
36/37/38:Irritating to eyes, respiratory system and skin  
Safety Statements: 26-36/37/39-45-24/25-27
26:In case of contact with eyes, rinse immediately with plenty of water
and seek medical advice 
36/37/39:Wear suitable protective clothing, gloves and eye/face
protection 
45:In case of accident or if you feel unwell, seek medical advice
immediately (show label where possible) 
24/25:Avoid contact with skin and eyes 
27:Take off immediately all contaminated clothing  
RIDADR:UN 3261 8/PG 2
WGK Germany:3
Hazard Note:Irritant
TSCA:T
HazardClass:8
PackingGroup:III

Specification

 2-Thiopheneacetic acid (CAS NO.1918-77-0), its Synonyms are 2-Thienylacetic acid ; Thiopheneacetic acid ; 2-(2-Thienyl)aceticacid ; 2-(Thiophen-2-yl)acetic acid ; Thiophen-2-ylacetic acid ; 2-Thienylethanoicacid .

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