4-Amino-3-mercaptobenzoic acid supplier

Name
4-AMINO-3-MERCAPTOBENZOIC ACID
EINECS
CAS No. 14543-45-4
Article Data11
CAS DataBase
Density 1.448 g/cm³
Solubility
Melting Point 290 °C (decomp)
Formula C₇H₇NO₂S
Boiling Point 383.333 °C at 760 mmHg
Molecular Weight 169.204
Flash Point 185.633 °C
Transport Information
Appearance
Safety
Risk Codes
Molecular Structure
Hazard Symbols
Synonyms 4-Amino-3-mercaptobenzoic acid;3-Mercapto-4-aminobenzoicacid;
PSA 102.12000
LogP 1.83690

Synthetic route

: 18330-64-8
4-amino-3-thiocyanatobenzoic acid

: 14543-45-4
4-amino-3-mercaptobenzoic acid

Conditions

Conditions	Yield
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 View Scheme

: 66947-92-0
2-aminobenzo[d]thiazole-6-carboxylic acid methyl ester

: 14543-45-4
4-amino-3-mercaptobenzoic acid

Conditions

Conditions	Yield
With water; potassium hydroxide for 16h; Inert atmosphere;	90%

: 19759-66-1
2-amino-6-cyanobenzthiazole

: 14543-45-4
4-amino-3-mercaptobenzoic acid

Conditions

Conditions	Yield
With sodium hydroxide for 72h; Heating;	76%

: 93-85-6
2-aminobenzothiazole-6-carboxylic acid

: 14543-45-4
4-amino-3-mercaptobenzoic acid

Conditions

Conditions	Yield
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

Conditions	Yield
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

Conditions	Yield
With potassium hydroxide

: 873-74-5
4-Aminobenzonitrile

[(Xantphos)2Pd(η3-CH2Ph]OTf: [(Xantphos)2Pd(η3-CH2Ph]OTf

: 14543-45-4
4-amino-3-mercaptobenzoic acid

Conditions

Conditions	Yield
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

: 150-13-0
4-amino-benzoic acid

: 14543-45-4
4-amino-3-mercaptobenzoic acid

Conditions

Conditions	Yield
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

: 50850-93-6
ethyl 2-aminobenzothiazole-6-carboxylate

: 14543-45-4
4-amino-3-mercaptobenzoic acid

Conditions

Conditions	Yield
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

Conditions	Yield
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

: 873-74-5
4-Aminobenzonitrile

: 14543-45-4
4-amino-3-mercaptobenzoic acid

Conditions

Conditions	Yield
Multi-step reaction with 3 steps 1.1: acetic acid / 3.5 h / 20 °C / Cooling with ice 2.1: hydrogenchloride; water / 6 h / 100 °C 3.1: potassium hydroxide; water / 24 h / Inert atmosphere; Reflux 3.2: Cooling with ice View Scheme
Multi-step reaction with 3 steps 1: acetic acid; bromine / 3.5 h / 20 °C / Cooling with ice 2: hydrogenchloride / water / 6 h / 100 °C 3: potassium hydroxide / water / 24 h / Inert atmosphere; Reflux View Scheme

: 68867-21-0
4-amino-3-thiocyanatobenzonitrile

: 14543-45-4
4-amino-3-mercaptobenzoic acid

Conditions

Conditions	Yield
Multi-step reaction with 2 steps 1.1: hydrogenchloride; water / 6 h / 100 °C 2.1: potassium hydroxide; water / 24 h / Inert atmosphere; Reflux 2.2: Cooling with ice View Scheme
Multi-step reaction with 2 steps 1: hydrogenchloride / water / 6 h / 100 °C 2: potassium hydroxide / water / 24 h / Inert atmosphere; Reflux View Scheme

: 14543-45-4
4-amino-3-mercaptobenzoic acid

: 32315-10-9
bis(trichloromethyl) carbonate

: 99615-68-6
2-oxo-2,3-dihydro-1,3-benzothiazole-6-carboxylic acid

Conditions

Conditions	Yield
Stage #1: 4-amino-3-mercaptobenzoic acid With potassium carbonate In tetrahydrofuran at 20℃; for 0.5h; Stage #2: bis(trichloromethyl) carbonate In tetrahydrofuran at -78℃; for 1h;	95%

: 14543-45-4
4-amino-3-mercaptobenzoic acid

: 555-16-8
4-nitrobenzaldehdye

: 65644-51-1
2-(4-nitrophenyl)-1,3-benzothiazole-6-carboxylic acid

Conditions

Conditions	Yield
With oxygen In ethanol	90%
In nitrobenzene for 6h; Heating;	55%

: 14543-45-4
4-amino-3-mercaptobenzoic acid

: 62-55-5
thioacetamide

: 6941-28-2
2-methyl-1,3-benzothiazole-6-carboxylic acid

Conditions

Conditions	Yield
With hydrogenchloride In ethylene glycol Heating;	90%
With hydrogenchloride In water; ethylene glycol at 100℃; for 7h;	78%

: 14543-45-4
4-amino-3-mercaptobenzoic acid

: 35370-80-0
2-phenoxyethanethioamide

: 2-Phenoxymethyl-benzothiazole-6-carboxylic acid

Conditions

Conditions	Yield
With hydrogenchloride In ethylene glycol Heating;	85%

: 14543-45-4
4-amino-3-mercaptobenzoic acid

: 98-83-9
isopropenylbenzene

: 3-methyl-3-phenyl-3,4-dihydro-2H-benzo[b][1,4]thiazine-7-carboxylic acid

Conditions

Conditions	Yield
With dipotassium peroxodisulfate; sodium iodide In acetonitrile at 80℃; for 16h; regioselective reaction;	84%

: 14543-45-4
4-amino-3-mercaptobenzoic acid

: 79-22-1
methyl chloroformate

: 99615-68-6
2-oxo-2,3-dihydro-1,3-benzothiazole-6-carboxylic acid

Conditions

Conditions	Yield
Stage #1: 4-amino-3-mercaptobenzoic acid With sodium carbonate In water at 45℃; Inert atmosphere; Stage #2: methyl chloroformate In water at 45 - 80℃; Stage #3: With hydrogenchloride In water pH=2 - 3;	82.2%
Stage #1: 4-amino-3-mercaptobenzoic acid; methyl chloroformate With sodium carbonate In water at 80℃; Inert atmosphere; Stage #2: In water pH=2 - 3; Cooling with ice; Acidic conditions;	82.2%
With sodium carbonate In water at 45 - 80℃; Inert atmosphere;	82.2%

: 4521-33-9
5-nitro-2-thiophenecarboxaldehyde

: 14543-45-4
4-amino-3-mercaptobenzoic acid

: 2-(5-nitro-2-thienyl)-1,3-benzothiazole-6-carboxylic acid

Conditions

Conditions	Yield
In nitrobenzene for 6h; Heating;	81%

: 14543-45-4
4-amino-3-mercaptobenzoic acid

: 100-10-7
4-dimethylamino-benzaldehyde

: 2-(4-Dimethylamino-phenyl)-benzothiazole-6-carboxylic acid

Conditions

Conditions	Yield
With oxygen In ethanol	80%

: 14543-45-4
4-amino-3-mercaptobenzoic acid

: 653568-68-4
4-methoxymethylbenzothioamide

: 723316-68-5
2-(4-methoxymethyl-phenyl)-benzothiazole-6-carboxylic acid

Conditions

Conditions	Yield
With hydrogenchloride In 1-methyl-pyrrolidin-2-one for 8h; Heating;	80%

: 14543-45-4
4-amino-3-mercaptobenzoic acid

: 123-11-5
4-methoxy-benzaldehyde

: 2-(4-methoxyphenyl)-1,3-benzothiazole-6-carboxylic acid

Conditions

Conditions	Yield
In nitrobenzene for 6h; Heating;	79%
With oxygen In ethanol	65%

: 14543-45-4
4-amino-3-mercaptobenzoic acid

: 135-02-4
ortho-anisaldehyde

: 2-(2-methoxyphenyl)-1,3-benzothiazole-6-carboxylic acid

Conditions

Conditions	Yield
In nitrobenzene for 6h; Heating;	79%

: 14543-45-4
4-amino-3-mercaptobenzoic acid

: 40516-65-2
2-benzoyloxythioacetamide

: 351465-00-4
2-benzoyloxymethyl-benzothiazole-6-carboxylic acid

Conditions

Conditions	Yield
With hydrogenchloride In ethylene glycol at 100℃; for 8h;	75%

: 698-63-5
5-nitrofurane-2-carboxaldehyde

: 14543-45-4
4-amino-3-mercaptobenzoic acid

: 2-(5-nitro-2-furyl)-1,3-benzothiazole-6-carboxylic acid

Conditions

Conditions	Yield
In nitrobenzene for 6h; Heating;	73%

: 14543-45-4
4-amino-3-mercaptobenzoic acid

: 591-31-1
3-methoxy-benzaldehyde

: 2-(3-methoxyphenyl)-1,3-benzothiazole-6-carboxylic acid

Conditions

Conditions	Yield
In nitrobenzene for 6h; Heating;	73%

: 14543-45-4
4-amino-3-mercaptobenzoic acid

: 123-08-0
4-hydroxy-benzaldehyde

: 2-(4-hydroxyphenyl)benzo[d]thiazole-6-carboxylic acid

Conditions

Conditions	Yield
With oxygen In ethanol	65%

: 14543-45-4
4-amino-3-mercaptobenzoic acid

: 100-52-7
benzaldehyde

: 19989-69-6
2-phenyl-1,3-benzothiazole-6-carboxylic acid

Conditions

Conditions	Yield
With oxygen In ethanol	60%

: 14543-45-4
4-amino-3-mercaptobenzoic acid

: 528-75-6
2,4-dinitrobenzaldehyde

: 2-(2,4-dinitrophenyl)-1,3-benzothiazole-6-carboxylic acid

Conditions

Conditions	Yield
In nitrobenzene for 6h; Heating;	56%

: 67-56-1
methanol

: 14543-45-4
4-amino-3-mercaptobenzoic acid

: 93015-74-8
dimethyl 3,3'-disulfanediylbis(4-aminobenzoate)

Conditions

Conditions	Yield
With sulfuric acid for 8h; Reflux;	52.2%

: 14543-45-4
4-amino-3-mercaptobenzoic acid

: 552-89-6
2-nitro-benzaldehyde

: 2-(2-nitrophenyl)-1,3-benzothiazole-6-carboxylic acid

Conditions

Conditions	Yield
In nitrobenzene for 6h; Heating;	45%
In nitrobenzene Reflux;	20%

: 2420-26-0
4-chlorosalicylaldehyde

: 14543-45-4
4-amino-3-mercaptobenzoic acid

: 2-(4-chloro-2-hydroxyphenyl)-1,3-benzothiazole-6-carboxylic acid

Conditions

Conditions	Yield
In nitrobenzene at 185℃; for 0.25h; Heating / reflux;	44%

: 14543-45-4
4-amino-3-mercaptobenzoic acid

: 99-61-6
3-nitro-benzaldehyde

: 2-(3-nitrophenyl)-1,3-benzothiazole-6-carboxylic acid

Conditions

Conditions	Yield
In nitrobenzene for 6h; Heating;	43%

: 14543-45-4
4-amino-3-mercaptobenzoic acid

: 1219483-62-1
3,3-bis(methylthio)-2-(4-trifluoromethylpyrimidin-2-yl)acrylonitrile

: 1219483-86-9
2-[6-carboxybenzothiazol-2(3H)-ylidene]-2-(4-trifluoromethyl-pyrimidin-2-yl)acetonitrile

Conditions

Conditions	Yield
With dmap; potassium carbonate In ethanol at 160℃; for 0.4h; Microwave;	40%

: 14543-45-4
4-amino-3-mercaptobenzoic acid

: 122-04-3
4-nitro-benzoyl chloride

: 65644-51-1
2-(4-nitrophenyl)-1,3-benzothiazole-6-carboxylic acid

Conditions

Conditions	Yield
With pyridine

: 14543-45-4
4-amino-3-mercaptobenzoic acid

: 1011-12-7
2-cyclohexylidenecyclohexanone

: 1',3',4',11'a-tetrahydro-2'H-spiro[cyclohexane-1,11'-dibenzo[b,e][1,4]thiazepine]-8'-carboxylic acid

: 14543-45-4
4-amino-3-mercaptobenzoic acid

: 2213-63-0
2,3-dichloroquinoxaline

: 19843-53-9
12H-benzo[5,6][1,4]thiazino[2,3-b]quinoxaline-3-carboxylic acid

: 14543-45-4
4-amino-3-mercaptobenzoic acid

: 39267-05-5
2,3-dichloro-6-methylquinoxaline

: 31639-75-5
8-methyl-12H-benzo[5,6][1,4]thiazino[2,3-b]quinoxaline-3-carboxylic acid

Conditions

Conditions	Yield
In ethanol Heating;

4-Amino-3-mercaptobenzoic acid Chemical Properties

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

4-Amino-3-mercaptobenzoic acid 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+% .

Product Name

4-AMINO-3-MERCAPTOBENZOIC ACID

Synthetic route

4-Amino-3-mercaptobenzoic acid Chemical Properties

4-Amino-3-mercaptobenzoic acid Specification

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