3-Chloro-1-(chloromethyl)-5-methyl-1H-pyrazole CAS 51355-86-3
| CAS No. | 51355-86-3 |
| Molecular Formula | C5H6Cl2N2 |
| Molecular Weight | 165.02 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 3-Chloro-1-(chloromethyl)-5-methyl-1H-pyrazole.
CATO supplies 3-Chloro-1-(chloromethyl)-5-methyl-1H-pyrazole (CAS 51355-86-3), a certified reference material (molecular formula C5H6Cl2N2, MW 165.02 g/mol) for analytical method development and quality control.
Based on its molecular formula C5H6Cl2N2, 3-Chloro-1-(chloromethyl)-5-methyl-1H-pyrazole contains a nitrile group, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 165.02 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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), 3-Chloro-1-(chloromethyl)-5-methyl-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 | C5H6Cl2N2 |
| Molecular Weight | 165.02 g/mol |
| Appearance | White to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1971 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chloro Standards
- 2-Chloro-5-(chloromethyl)-1-methyl-1H-imidazole (CAS 1222479-26-6)
- 4-Chloro-5-(chloromethyl)-1-methyl-1h-pyrazole (CAS 129308-95-8)
- 4-Chloro-3-(chloromethyl)-1-methyl-1h-pyrazole (CAS 1429418-75-6)
- 2-Chloro-5-(1-chloroethyl)furan (CAS 1644345-91-4)
- 5-chloro-3-(chloromethyl)-1-methyl-1H-pyrazole (CAS 524740-33-8)
- 6-Chloro-1-(chloromethyl)cyclohex-1-ene (CAS 81034-09-5)
- 4-Chloro-1h-pyrazole-3-carbonyl chloride (CAS 717871-75-5)
- 2-Chloro-5-(methylthio)thiophene (CAS 23167-83-1)
Recommended Standards
- 1-(2-Chloroethyl)-4-chloro-1H-pyrazole (CAS 663941-71-7)
- 4,5-Dichloro-1,2-dimethyl-1H-imidazole (CAS 175201-56-6)
- 5-Bromo-1-methyl-1<I>H</I>-imidazole (CAS 1003-21-0)
- 3-(Bromomethyl)-2,2-dimethyloxirane (CAS 1120-79-2)
- 3-Bromomethyl-2-methoxy-4-(trifluoromethyl)pyridine (CAS 1227572-28-2)
- (4-Bromo-3-methylphenoxy)acetic acid (CAS 90971-89-4)
- 4-Amino-2-(difluoromethyl)-5-iodopyridine-3-sulfonyl chloride (CAS 1806922-60-0)
- 1-ethyl-3-(trifluoromethyl)-1h-pyraZole-5-carbohydrazide (CAS 1004643-69-9)
- Thieno[3,2-b]pyridin-3-amine (CAS 120208-33-5)
- 2-(1-methyl-1H-1,2,4-triazol-3-yl)acetic acid (CAS 1245645-84-4)
- Prasugrel M-fluoro Impurity (CAS 1391052-75-7)
- N-(4-hydroxy-3-methylphenyl)acetamide (CAS 16375-90-9)
- 8-methoxynaphthalen-1-ol (CAS 3588-75-8)
- Prolactin-Releasing Peptide (1-31) (human) (CAS 215510-22-8)
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