2-(5-chloro-4-methyl-pyrazol-1-yl)acetonitrile CAS 1556902-47-6
| CAS No. | 1556902-47-6 |
| Molecular Formula | C6H6ClN3 |
| Molecular Weight | 155.58 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 2-(5-chloro-4-methyl-pyrazol-1-yl)acetonitrile.
CATO supplies 2-(5-chloro-4-methyl-pyrazol-1-yl)acetonitrile (CAS 1556902-47-6), a certified reference material (molecular formula C6H6ClN3, MW 155.58 g/mol) for analytical method development and quality control.
Structurally, 2-(5-chloro-4-methyl-pyrazol-1-yl)acetonitrile (C6H6ClN3) contains a nitrile group, chlorine substitution, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 155.58 g/mol, it falls into the medium-molecular-weight range. 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 | C6H6ClN3 |
| Molecular Weight | 155.58 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1992 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related chloro Standards
- 3-(4-Chloro-1h-pyrazol-1-yl)propanenitrile (CAS 1001500-05-5)
- 4-Chloro-5-methylpicolinaldehyde (CAS 1060801-47-9)
- 2-Chloro-5-methylisonicotinaldehyde (CAS 1060801-49-1)
- 4-Chloro-5-methylnicotinaldehyde (CAS 1060801-51-5)
- 6-Chloro-4-methylpicolinaldehyde (CAS 1060804-70-7)
- 4-Chloro-6-methylnicotinaldehyde (CAS 1060805-86-8)
- 4-Chloro-2-methylnicotinaldehyde (CAS 1060805-88-0)
- 3-Chloro-6-methylpicolinaldehyde (CAS 1060810-01-6)
Recommended Standards
- 4-Methylnicotinoyl chloride (CAS 155136-54-2)
- 4-Aminobenzoyl chloride  (CAS 16106-38-0)
- 6-Chloro-1,3-dihydrofuro[3,4-c]pyridine (CAS 1546226-40-7)
- 2-Methylnicotinoyl chloride (CAS 169229-06-5)
- 1-(4,6-Dimethylpyrimidin-2-yl)-3-(4-hydroxyphenyl)guanidine (CAS 332074-04-1)
- Methyl 5-bromo-3-hydroxybenzo[b]thiophene-2-carboxylate (CAS 13134-78-6)
- (3-Fluoro-5-(pyrrolidine-1-carbonyl)phenyl)boronic acid (CAS 1264616-18-3)
- Diethyl ((2-chlorothiazol-5-yl)methyl)phosphonate (CAS 903130-74-5)
- rel-(1S,2R)-2-(Pyridin-3-yl)cyclopropanamine dihydrochloride (CAS 1228924-38-6)
- (r)-2-Amino-2-(4-ethoxyphenyl)ethan-1-ol (CAS 174500-19-7)
- 3-Nitro-2-pyridinecarbonitrile (CAS 51315-07-2)
- Vonoprazan Impurity 216 (CAS 1428932-17-5)
- 2-((3-(Trifluoromethyl)phenoxy)methyl)morpholine (CAS 1047297-46-0)
- Des-Leu26-Tirzepatide (CAS CATO-CPTD788947)
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