4-Aminobenzene-1,2-diol hydrochloride CAS 4956-56-3
| CAS No. | 4956-56-3 |
| Molecular Formula | C6H7NO2 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 4-Aminobenzene-1,2-diol hydrochloride (CAS 4956-56-3), a certified reference material (molecular formula C6H7NO2HCl, MW 161.59 g/mol) for analytical method development and quality control.
Structurally, 4-Aminobenzene-1,2-diol hydrochloride (C6H7NO2HCl) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 3.0, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 161.59 g/mol, it falls into the medium-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C6H7NO2 HCl |
| Molecular Weight | 161.59 g/mol |
| Appearance | White to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Aminobenzene Standards
- 1-[(4-Aminobenzene)sulfonyl]-3-(3-methylbutyl)urea (CAS 101590-31-2)
- 2-Aminobenzene-1,3-dialdehyde (CAS 102975-00-8)
- Methyl 2-[(3-aminobenzene)sulfonamido]benzoate (CAS 1157025-11-0)
- methyl 5-[(4-aminobenzene)sulfonamido]-2-chlorobenzoate (CAS 1193390-00-9)
- 4-Aminobenzene-1-carbonimidoyl chloride hydrochloride (CAS 1378857-83-0)
- 3-Aminobenzene-1-sulfonyl chloride hydrochloride (CAS 1417793-13-5)
- 3-aminobenzene-1,2-diol (CAS 20734-66-1)
- 2-Aminobenzene-1,4-diol (CAS 20734-68-3)
Recommended Standards
- 2-(3-Aminopiperidin-1-yl)-3-methyl-6,7-dihydro-3H-cyclopenta[d]pyrimidin-4(5H)-one (CAS 1710195-23-5)
- 3-Bromo-1,2-oxazole-5-carbonitrile (CAS 1241897-95-9)
- 1H-Thieno[3',4':3,4]benzo[1,2-d]imidazole (CAS 205183-70-6)
- 1,2-Ethanediamine, N1,N2-diethyl-N1,N2-dimethyl- (CAS 106-66-1)
- 4-Bromo-3-fluoropyridine Hydrochloride (CAS 1159811-44-5)
- (S)-3-Amino-3-(2-hydroxyphenyl)propanoic acid hydrochloride (CAS 490034-67-8)
- 2-Methyl-1-phenyl-1H-1,3-benzodiazol-5-amine hydrochloride (CAS 1153234-72-0)
- 2-(3-Bromophenyl)pent-4-yn-2-ol (CAS 1342144-24-4)
- N-(2,2,2-Trichloroethoxy)carbonyl] Nortilidine-d3 (CAS 1246820-72-3)
- Semaglutide Impurity 14(Discontinued,See CPTD788307 ) (CAS CATO-C4X-222614)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com