Product

3-Amino-4-hydroxybenzoic acid

CAS No.：1571-72-8

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3-Amino-4-hydroxybenzoic acid Basic information

Product Name:	3-Amino-4-hydroxybenzoic acid
Synonyms:	2-amino-4-carboxyphenol;TIMTEC-BB SBB006740;3-amino-4-hydroxybenzenecarboxylic acid;3-Amino-4-hydroxybenzoic acid,98%;2-Amino-4-carboxyphenol, 5-Carboxy-2-hydroxyaniline;3-AMino-4-hydroxybenzoic acid, 98% 25GR;3-AMino-4-hydroxybenzoic acid, 98% 5GR;BENZOIC ACID, 3-AMINO-4-HYDROXY-
CAS:	1571-72-8
MF:	C7H7NO3
MW:	153.14
EINECS:	216-390-2
Product Categories:	Mass Spectrometry;Matrix Materials (MALDI-TOF-MS);API intermediates;Analytical Chemistry;Carboxylic Acids;Phenyls & Phenyl-Het;Alcohols and Derivatives;Amino Acids and Derivatives;Aromatic Carboxylic Acids, Amides, Anilides, Anhydrides & Salts;Carboxylic Acids;Phenyls & Phenyl-Het;Aromatic Amino Acids;Peptide Synthesis;Unnatural Amino Acid Derivatives
Mol File:	1571-72-8.mol

3-Amino-4-hydroxybenzoic acid Chemical Properties

Melting point	208 °C (dec.) (lit.)
Boiling point	276.03°C (rough estimate)
density	1.3585 (rough estimate)
refractive index	1.5500 (estimate)
storage temp.	Keep in dark place,Inert atmosphere,Room temperature
solubility	Soluble in solvents.
form	Crystalline Powder
pka	9.06±0.18(Predicted)
color	Beige-gray to brown
λmax	308nm(H2O (pH 11))(lit.)
Sensitive	Light Sensitive
BRN	972238
CAS DataBase Reference	1571-72-8(CAS DataBase Reference)

Safety Information

Hazard Codes	Xn,Xi
Risk Statements	22-36/37/38
Safety Statements	26-36
WGK Germany	3
Hazard Note	Irritant
HazardClass	IRRITANT, AIR SENSITIVE, LIGHT SENSITIVE
HS Code	29225090

MSDS Information

Provider	Language
3-Amino-4-hydroxybenzoic acid	English
SigmaAldrich	English
ACROS	English
ALFA	English

3-Amino-4-hydroxybenzoic acid Usage And Synthesis

Chemical Properties	beige-grey to brown crystalline powder
Uses	3-Amino-4-hydroxybenzoic acid is used to produce 4-acetoxy-3-acetylamino-benzoic acid with acetic acid anhydride at temperature of 0 - 20°C. This reaction will need reagents aq. HCl and NaOAc.
Definition	ChEBI: A monohydroxybenzoic acid that is 4-hydroxybenzoic acid carrying an additional amino substitutent at position 3.
Synthesis Reference(s)	The Journal of Organic Chemistry, 54, p. 3740, 1989 DOI: 10.1021/jo00276a044

3-Amino-4-hydroxybenzoic acid Preparation Products And Raw materials

Raw materials	Benzoic acid, 4-hydroxy-3-(2-phenyldiazenyl)--->3-(Acetylamino)-4-hydroxybenzoic acid-->4-Hydroxy-3-nitrobenzoic acid-->ETHYL 4-HYDROXY-3-NITROBENZOATE-->ETHYL 3-AMINO-4-HYDROXYBENZOATE-->Butylparaben-->Methyl 3-nitro-4-hydroxybenzoate-->Methyl 3-amino-4-hydroxybenzoate-->4-Hydroxybenzoic acid-->4-Chloro-3-nitrobenzoic acid
Preparation Products	LCP polybenzoxazole liquid crystal-->2-OXO-2,3-DIHYDRO-BENZOOXAZOLE-5-CARBOXYLIC ACID-->3,5-DIIODO-4-HYDROXYBENZOIC ACID-->METHYL 1,3-BENZOXAZOLE-5-CARBOXYLATE-->5-Carboxy-8-hydroxyquinoline-->METHYL 4-HYDROXY-3-IODOBENZOATE-->Sulfanilamide

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