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14543-45-4

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Basic Information
CAS No.: 14543-45-4
Name: 4-AMINO-3-MERCAPTOBENZOIC ACID
Article Data: 11
Molecular Structure:
Molecular Structure of 14543-45-4 (4-AMINO-3-MERCAPTOBENZOIC ACID)
Formula: C7H7NO2S
Molecular Weight: 169.204
Synonyms: 4-Amino-3-mercaptobenzoic acid;3-Mercapto-4-aminobenzoicacid;
Density: 1.448 g/cm3
Melting Point: 290 °C (decomp)
Boiling Point: 383.333 °C at 760 mmHg
Flash Point: 185.633 °C
PSA: 102.12000
LogP: 1.83690
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Conditions
ConditionsYield
With sodium sulfide In ethanol; water at 90℃; for 2h;96%
Multi-step reaction with 2 steps
1: hydrochloric acid / H2O / 0.5 h / Heating
2: potassium hydroxide / H2O / 4 h / Heating
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Conditions
ConditionsYield
With water; potassium hydroxide for 16h; Inert atmosphere;90%
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Conditions
ConditionsYield
With sodium hydroxide for 72h; Heating;76%
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2-aminobenzothiazole-6-carboxylic acid

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Conditions
ConditionsYield
Stage #1: 2-aminobenzothiazole-6-carboxylic acid With water; potassium hydroxide for 24h; Inert atmosphere; Reflux;
Stage #2: With hydrogenchloride In water Cooling with ice;		67.9%
Stage #1: 2-aminobenzothiazole-6-carboxylic acid With water; potassium hydroxide for 24h; Inert atmosphere; Reflux;
Stage #2: With hydrogenchloride In water Cooling with ice;		67.9%
With potassium hydroxide In water for 24h; Inert atmosphere; Reflux;67.9%
With water; potassium hydroxide for 3h; Reflux;66.1%
With potassium hydroxide In water

2-aminobenzothiazole-6-carboxylic acid hydrochloride

14543-45-4

4-amino-3-mercaptobenzoic acid

Conditions
ConditionsYield
With potassium hydroxide for 4h; Heating;
With potassium hydroxide In water for 4h; Heating;
2-amino-benzothiazole-carboxylic acid-(6)

2-amino-benzothiazole-carboxylic acid-(6)

14543-45-4

4-amino-3-mercaptobenzoic acid

Conditions
ConditionsYield
With potassium hydroxide
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14543-45-4

4-amino-3-mercaptobenzoic acid

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: 82 percent / Br2; AcOH / 3 h / 20 °C
2: 76 percent / aq. NaOH / 72 h / Heating
View Scheme
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4-amino-benzoic acid

14543-45-4

4-amino-3-mercaptobenzoic acid

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: bromine / methanol / 2 h / -5 °C
2: hydrochloric acid / H2O / 0.5 h / Heating
3: potassium hydroxide / H2O / 4 h / Heating
View Scheme
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ethyl 2-aminobenzothiazole-6-carboxylate

14543-45-4

4-amino-3-mercaptobenzoic acid

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: 1N aq. HCl / Heating
2: KOH / 4 h / Heating
View Scheme
94-09-7

p-aminoethylbenzoate

14543-45-4

4-amino-3-mercaptobenzoic acid

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: Br2 / methanol / 2 h / -5 °C
2: 1N aq. HCl / Heating
3: KOH / 4 h / Heating
View Scheme
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Chemistry

The Molecular Structure of  4-Amino-3-mercaptobenzoic acid (CAS NO.14543-45-4):

Empirical Formula: C7H7NO2S
Molecular Weight: 169.201
Nominal Mass: 169 Da
Average Mass: 169.201 Da
Monoisotopic Mass: 169.019748 Da 
Index of Refraction: 1.708
Molar Refractivity: 45.59 cm3
Molar Volume: 116.8 cm3
Surface Tension: 74.8 dyne/cm
Density: 1.447 g/cm3
Flash Point: 185.6 °C
Enthalpy of Vaporization: 66.65 kJ/mol
Boiling Point: 383.3 °C at 760 mmHg
Vapour Pressure: 1.46E-06 mmHg at 25°C

Specification

 4-Amino-3-mercaptobenzoic acid (CAS NO.14543-45-4) is also called as 4-Amino-3-sulfanylbenzenecarboxylic acid ; 4-Amino-3-mercaptobenzoic acid 98+% .