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3-Amino-1,2-benzenediol

CAS No.
20734-66-1
Chemical Name:
3-Amino-1,2-benzenediol
Synonyms
3-aMinobenzene-1,2-diol;3-Amino-1,2-benzenediol;1,2-Benzenediol, 3-aMino-;3-Amino benzene-1,2-diol / 3-Amino catechol hydrochloride
CBNumber:
CB62528751
Molecular Formula:
C6H7NO2
Molecular Weight:
125.13
MDL Number:
MFCD14584779
MOL File:
20734-66-1.mol
MSDS File:
SDS
Last updated:2026-05-28 03:14:28

3-Amino-1,2-benzenediol Properties

Melting point 142-145 °C
Boiling point 297.0±25.0 °C(Predicted)
Density 1.412±0.06 g/cm3(Predicted)
storage temp. under inert gas (nitrogen or Argon) at 2–8 °C
solubility DMF: 5 mg/ml; DMSO: 5 mg/ml; Ethanol: 10 mg/ml; PBS (pH 7.2): 1 mg/ml
form A solid
pka 9.59±0.10(Predicted)

SAFETY

Risk and Safety Statements

Symbol(GHS)  Exclamation Mark (GHS07)
GHS07
Signal word  Warning
Hazard statements  H302-H315-H319-H335
Precautionary statements  P261-P305+P351+P338
HazardClass  IRRITANT
HS Code  2908190090
NFPA 704
0
3 0

3-Amino-1,2-benzenediol price More Price(26)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Cayman Chemical 36366 3-Aminocatechol ≥95% 20734-66-1 5mg $32 2026-04-30 Buy
Cayman Chemical 36366 3-Aminocatechol ≥95% 20734-66-1 10mg $61 2026-04-30 Buy
Cayman Chemical 36366 3-Aminocatechol ≥95% 20734-66-1 50mg $186 2026-04-30 Buy
Cayman Chemical 36366 3-Aminocatechol ≥95% 20734-66-1 100mg $341 2026-04-30 Buy
ChemScene CS-0030172 3-Aminobenzene-1,2-diol ≥98% 20734-66-1 250mg $296 2026-06-04 Buy
Product number Packaging Price Buy
36366 5mg $32 Buy
36366 10mg $61 Buy
36366 50mg $186 Buy
36366 100mg $341 Buy
CS-0030172 250mg $296 Buy

3-Amino-1,2-benzenediol Chemical Properties, Uses, Production

Uses

Degradation of Acid Black 1 reveals the formation of 3-Aminocatechol as one of the intermediates.

Synthesis

2,3-DIMETHOXYANILINE

6299-67-8

3-Amino-1,2-benzenediol

20734-66-1

2,3-Dimethoxyaniline (438 μL, 3.26 mmol) was used as raw material and dissolved in dichloromethane (5.0 mL). A 1 mol/L solution of boron tribromide/dichloromethane (11.4 mL, 11.4 mmol) was slowly added dropwise at -78 °C under argon protection. After the dropwise addition, the reaction system was slowly warmed to room temperature and stirred overnight. Upon completion of the reaction, the reaction was quenched with saturated aqueous sodium bicarbonate solution and subsequently neutralized with saturated aqueous ammonium chloride solution. The reaction mixture was extracted with ethyl acetate and the organic phase was dried over anhydrous sodium sulfate, filtered and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (eluent: hexane/ethyl acetate) to afford the target product 3-aminobenzene-1,2-diol (67 mg, 16% yield).

IC 50

MMP-2: 20 μM (IC50); MMP-8: 26 μM (IC50); MMP-9: 16 μM (IC50); MMP-14: 16.3 μM (IC50)

References

[1] Patent: JP2016/124812, 2016, A. Location in patent: Paragraph 0098
[2] Patent: US2003/65018, 2003, A1
[3] Patent: WO2007/71434, 2007, A1. Location in patent: Page/Page column 60-61

3-Amino-1,2-benzenediol Preparation Products And Raw materials

Global Suppliers ( 34)
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J & K SCIENTIFIC LTD. 18210857532 18210857532 jkinfo@jkchemical.com China 96815 76
Shandong Xiya Chemical Co., Ltd 13355009207 13355009207 3007715519@qq.com China 18722 57
Nanjing JinruiJiuAn Biotechnology Co., Ltd. 025-58196018 800028039 sales@fartop.net China 2227 55
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Shanghai Xingui Biotechnology Co., Ltd. 15121041756 xingui2022@126.com China 9954 58
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Shanghai EFE Biological Technology Co., Ltd. 021-65675885 18964387627 info@efebio.com China 9799 58
Shanghai YuanYe Biotechnology Co., Ltd. 15026964105 2881489226@qq.com China 89667 60
3-Amino-1,2-benzenediol 1,2-Benzenediol, 3-aMino- 3-Amino benzene-1,2-diol / 3-Amino catechol hydrochloride 3-aMinobenzene-1,2-diol 20734-66-1