2-chloro-1H-1,3-benzodiazol-5-amine CAS 203302-73-2
| CAS No. | 203302-73-2 |
| Molecular Formula | C7H6ClN3 |
| Molecular Weight | 167.60 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-chloro-1H-1,3-benzodiazol-5-amine (CAS 203302-73-2) is a high-purity analytical reference standard with the molecular formula C7H6ClN3 and a molecular weight of 167.60 g/mol.
Based on its molecular formula C7H6ClN3, 2-chloro-1H-1,3-benzodiazol-5-amine contains a nitrile group, chlorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 167.60 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
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 | C7H6ClN3 |
| Molecular Weight | 167.60 g/mol |
| Appearance | Off-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 DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2015 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related chloro Standards
- 4-Chloro-1H-pyrrolo[2,3-b]pyridin-3-amine (CAS 1000340-38-4)
- 6-Chloro-1H-pyrrolo[2,3-b]pyridin-4-amine (CAS 1000340-80-6)
- 5-Chloro-1H-pyrrolo[3,2-b]pyridin-7-amine (CAS 1000577-90-1)
- 5-Chloro-1H-indazol-6-amine (CAS 100960-35-8)
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Recommended Standards
- 2-Amino-6-chlorobenzimidazole (CAS 5418-93-9)
- 2-Chloro-1-methyl-1H-imidazo[4,5-b]pyridine (CAS 65550-24-5)
- 2-Amino-6-chloro-4-methylpyridine-3-carbonitrile (CAS 52982-90-8)
- 2-chloro-3-methyl-imidazo[4,5-b]pyridine (CAS 30458-68-5)
- 4-(4-Bromophenyl)-4,5,6,7-tetrahydro-3H-imidazo[4,5-c]pyridine (CAS 7271-11-6)
- 4-(3,5-Dimethyl-1H-pyrazole-1-carbonyl)-N-(4-methoxyphenyl)-3-methyl-1H-pyrazole-5-sulfonamide (CAS 1298033-83-6)
- 1-Ethyl-2-methyl-1H-imidazole (CAS 21202-52-8)
- 6-Cyclopropyl-3-isobutylisoxazolo[5,4-b]pyridine-4-carboxylic acid (CAS 1263209-11-5)
- 9-Ethylidene-9H-fluorene (CAS 7151-64-6)
- tert-Butyl 3-nitro-1H-pyrrole-1-carboxylate (CAS 1881322-34-4)
- Isoamyl Formate (CAS 110-45-2)
- Ethyl 1-((2-methyl-6-(trifluoromethyl)pyridin-3-yl)methyl)piperidine-3-carboxylate (CAS 1308645-62-6)
- 4-Methoxybenzyl carbonochloridate (CAS 15586-16-0)
- D-Pro31-Tirzepatide (CAS CATO-CPTD788905)
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