4-(chloromethyl)-1H-pyrazole CAS 187097-22-9
| CAS No. | 187097-22-9 |
| Molecular Formula | C4H9ClN2 |
| Molecular Weight | 120.58 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-(chloromethyl)-1H-pyrazole (CAS 187097-22-9) is a high-purity analytical reference standard with the molecular formula C4H9ClN2 and a molecular weight of 120.58 g/mol.
Structurally, 4-(chloromethyl)-1H-pyrazole (C4H9ClN2) contains chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 1.0, corresponding to approximately 1 ring(s) or double-bond equivalent(s). With a molecular weight of 120.58 g/mol, it falls into the low-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 4-(chloromethyl)-1H-pyrazole meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C4H9ClN2 |
| Molecular Weight | 120.58 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 | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 1.0 |
| CAS Registry Year (est.) | 2010 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related chloromethyl Standards
- 2-(Chloromethyl)-2-ethyloxirane (CAS 75484-32-1)
- 2-(Chloromethyl)tetrahydrofuran (CAS 3003-84-7)
- 3-(chloromethyl)-1H-pyrazole (CAS 23784-89-6)
- 3-(Chloromethyl)-2,2-dimethyloxirane (CAS 79457-63-9)
- 3-(Chloromethyl)-3-methyloxetane (CAS 822-48-0)
- 3-(Chloromethyl)tetrahydrofuran (CAS 89181-22-6)
- (R)-3-(chloromethyl)pyrrolidine (CAS 1187927-17-8)
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Recommended Standards
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- (R)-1-Chloropent-4-en-2-ol (CAS 197899-19-7)
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