2-(5-(4-Chlorophenyl)-1H-pyrazol-3-yl)acetonitrile CAS 134161-76-5
| CAS No. | 134161-76-5 |
| Molecular Formula | C11H8ClN3 |
| Molecular Weight | 217.65 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
2-(5-(4-Chlorophenyl)-1H-pyrazol-3-yl)acetonitrile (CAS 134161-76-5), molecular formula C11H8ClN3 and molecular weight 217.65 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 2-(5-(4-Chlorophenyl)-1H-pyrazol-3-yl)acetonitrile (C11H8ClN3) contains a nitrogen-containing heterocyclic scaffold, a nitrile group, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 217.65 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C11H8ClN3 |
| Molecular Weight | 217.65 g/mol |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1995 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Chlorophenyl Standards
- (2-Chlorophenyl)(pyridin-2-yl)methanone (CAS 1694-57-1)
- (2-Chlorophenyl)(pyridin-3-yl)methanone (CAS 42374-49-2)
- (3-Chlorophenyl)(pyridin-4-yl)methanone (CAS 62246-94-0)
- 2-(3-(4-Chlorophenyl)-1H-pyrazol-1-yl)acetonitrile (CAS 959573-11-6)
- 2-(4-Chlorophenyl)isonicotinaldehyde (CAS 959265-66-8)
- 2-(4-Chlorophenyl)nicotinaldehyde (CAS 885950-19-6)
- 3-(2-Chlorophenyl)picolinaldehyde (CAS 65219-35-4)
- 3-(3-Chlorophenyl)picolinaldehyde (CAS 61704-35-6)
Recommended Standards
- Ethyl 2-(3-amino-4-chloro-1h-pyrazol-1-yl)propanoate (CAS 1341543-84-7)
- 2-Amino-4-(4-chloro-3-methyl-1h-pyrazol-1-yl)butanoic acid (CAS 1342392-34-0)
- 2-Amino-4-(4-chloro-5-methyl-1h-pyrazol-1-yl)butanoic acid (CAS 1341392-27-5)
- 2-Chloro-6-fluoro-5-methoxy-1,3-benzothiazole (CAS 1344684-79-2)
- 7-Amino-6-(pyrrolidin-1-ylmethyl)quinoline-5,8-dione (CAS 61324-54-7)
- 3-(hydroxymethyl)cyclopentan-1-one (CAS 64646-09-9)
- 2-Chloro-5-(methoxycarbonyl)-3-nitrophenylboronic acid (CAS 2377605-81-5)
- 6-(Prop-2-yn-1-ylamino)pyrimidin-2(1H)-one (CAS 193275-31-9)
- N-alkane Mix 25 (CAS CATO-MCHM705002-HE)
- 5,6-Difluoro-2,3-dihydro-1H-indene-2-carboxylic acid (CAS 161712-84-1)
- Ceftriaxone Disodium (CAS 74578-69-1)
- Ethyl3-oxo-3-(thiazol-2-yl)propanoate (CAS 212621-63-1)
- 2-((((9H-fluoren-9-yl)methoxy)carbonyl)amino)-2-(2-(trifluoromethoxy)phenyl)acetic acid (CAS 1692823-37-2)
- Semaglutide impurity 249 (CAS CATO-C4X-2226249)
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