2-(4-Chlorophenyl)-6-nitro-1H-1,3-benzodiazole CAS 1571-87-5
| CAS No. | 1571-87-5 |
| Molecular Formula | C13H8ClN3O2 |
| Molecular Weight | 273.67 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-(4-Chlorophenyl)-6-nitro-1H-1,3-benzodiazole (CAS 1571-87-5), molecular formula C13H8ClN3O2 and molecular weight 273.67 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C13H8ClN3O2, 2-(4-Chlorophenyl)-6-nitro-1H-1,3-benzodiazole contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 273.67 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
CATO manufactures 2-(4-Chlorophenyl)-6-nitro-1H-1,3-benzodiazole under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C13H8ClN3O2 |
| Molecular Weight | 273.67 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, 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; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Chlorophenyl Standards
- 2-(4-Chlorophenyl)-4-(furan-2-ylmethylene)oxazol-5(4H)-one (CAS 111865-34-0)
- 5-(3-(3-Chlorophenyl)-1,2,4-oxadiazol-5-yl)pyridin-2-ol (CAS 1223889-44-8)
- 1-(4-Chlorophenyl)-3-nitro-1H-pyrrolo[2,3-c]pyridine (CAS 1334713-80-2)
- 3-(4-Chlorophenyl)-5-nitro-1H-indazole (CAS 1346808-74-9)
- 5-[3-(2-Chlorophenyl)-1,2,4-oxadiazol-5-yl]-1,2-dihydropyridin-2-one (CAS 1400540-72-8)
- 2-(3-Chlorophenyl)-5-nitro-1H-benzo[d]imidazole (CAS 1571-88-6)
- 2-(2-Chlorophenyl)-5-nitro-1H-benzo[d]imidazole (CAS 1571-89-7)
- 2-(2-Chlorophenyl)imidazo[1,2-a]pyrimidine-3-carboxylic acid (CAS 1923069-07-1)
Recommended Standards
- 2-(2H-1,3-Benzodioxol-5-yl)-6-chloroimidazo[1,2-b]pyridazine (CAS 141409-08-7)
- 2-[(6-Chloro-3-nitropyridin-2-yl)amino]-3-methylbutanoic acid (CAS 1396963-89-5)
- 6-Chloro-2-phenylimidazo[1,2-b]pyridazine-3-carboxylic acid (CAS 160911-34-2)
- tert-butyl N-(2-chloro-3-nitropyridin-4-yl)carbamate (CAS 1803598-41-5)
- 6-(4-Methoxyphenyl)-2-phenylpyrazolo[1,5-a]pyrimidine (CAS 893613-49-5)
- 5-Cyclopropoxy-2-methylbenzenesulfonamide (CAS 1243482-08-7)
- 3-Amino-N,N-dimethyl-2,3-dihydro-1H-indene-5-sulfonamide (CAS 1316225-63-4)
- Isovaleraldehyd-2,4-dinitrophenylhydrazone (CAS 2256-01-1)
- 5-((Phenylthio)methyl)-1H-imidazole (CAS 40224-92-8)
- 2-(4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)benzofuran-6-amine (CAS 942590-10-5)
- 4,6-Dichloro-2-(trifluoromethyl)pyrimidine (CAS 705-24-8)
- BDD26-ThCHO (CAS 2411657-11-7)
- 2-(4-(Difluoromethoxy)phenyl)cyclopropane-1-carboxylic acid (CAS 1157554-33-0)
- Semaglutide-d15 (CAS 910463-68-2(non-labelled))
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