1-(3-Chlorophenyl)pyrazole CAS 57211-65-1
| CAS No. | 57211-65-1 |
| Molecular Formula | C9H7ClN2 |
| Molecular Weight | 178.62 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
1-(3-Chlorophenyl)pyrazole (CAS 57211-65-1), molecular formula C9H7ClN2 and molecular weight 178.62 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 1-(3-Chlorophenyl)pyrazole (C9H7ClN2) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 178.62 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.
CATO manufactures 1-(3-Chlorophenyl)pyrazole 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 | C9H7ClN2 |
| Molecular Weight | 178.62 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1973 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chlorophenyl Standards
- 4-(4-Chlorophenyl)-1H-pyrazole (CAS 111016-47-8)
- 4-(3-Chlorophenyl)-1h-pyrazole (CAS 1196152-63-2)
- 1-(2-Chlorophenyl)-1H-imidazole (CAS 51581-50-1)
- 1-(2-Chlorophenyl)-1H-pyrazole (CAS 917508-36-2)
- 1-(4-Chlorophenyl)-1H-pyrazole (CAS 25419-86-7)
- 2-(2-Chlorophenyl)imidazole (CAS 76875-22-4)
- 2-(3-Chlorophenyl)imidazole (CAS 27423-81-0)
- 2-(4-Chlorophenyl)imidazole (CAS 4205-05-4)
Recommended Standards
- 1-(6-Chloro-3-pyridyl)cyclopropanecarbonitrile (CAS 854267-89-3)
- 1-(2-chloroethyl)-4-ethyl-4,5-dihydro-1H-1,2,3,4-tetrazol-5-one (CAS 69049-03-2)
- 1-(6-Chloropyridin-2-yl)cyclopropane-1-carbonitrile (CAS 916176-88-0)
- (5-chloropyrimidin-2-yl)acetic acid (CAS 944903-13-3)
- 4,4,4-Trifluoro-1-(1-methyl-1h-pyrazol-3-yl)butane-1,3-dione (CAS 1006319-27-2)
- 5-(3-Fluorophenyl)-1,3,4-thiadiazol-2-amine (CAS 59565-52-5)
- (R)-1-(2-Chloropyridin-4-yl)propan-1-amine (CAS 1212959-02-8)
- 1- Methoxy- 2- methyl- 3- butyn- 2- ol (CAS 42841-64-5)
- Olodaterol Impurity 12 (CAS CATO-C4X-194312)
- (R)-1-(4-bromo-3-methylphenyl)-2,2,2-trifluoroethan-1-amine (CAS 1213380-65-4)
- 1-Ethyl-4-iodo-5-methyl-1H-pyrazole (CAS 1217862-56-0)
- 6-Bromo-5-(difluoromethyl)-4-hydroxypyridine-3-sulfonamide (CAS 1807004-23-4)
- 3-(8-Cyclopentyl-2,6-Dioxo-1-Propyl-7H-Purin-3-ylPropyl 4-Fluorosulfonylbenzoate (CAS 156547-56-7)
- Neuropeptide Y (free acid) (human, rat) trifluoroacetate salt (CAS 99575-89-0)
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