4-(chloromethyl)-1-methyl-1H-pyrazole CAS 735241-98-2
| CAS No. | 735241-98-2 |
| Molecular Formula | C5H11ClN2 |
| Molecular Weight | 134.61 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 4-(chloromethyl)-1-methyl-1H-pyrazole.
CATO supplies 4-(chloromethyl)-1-methyl-1H-pyrazole (CAS 735241-98-2), a certified reference material (molecular formula C5H11ClN2, MW 134.61 g/mol) for analytical method development and quality control.
The molecular framework of 4-(chloromethyl)-1-methyl-1H-pyrazole (C5H11ClN2) is characterized by chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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.
CATO manufactures 4-(chloromethyl)-1-methyl-1H-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 | C5H11ClN2 |
| Molecular Weight | 134.61 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.) | 1986 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related chloromethyl Standards
- 4-(chloromethyl)-1-methyl-imidazole (CAS 112258-59-0)
- 3-(chloromethyl)-4-methyl-1H-pyrazole (CAS 1607024-74-7)
- 4-(chloromethyl)pyridazine (CAS 94693-72-8)
- 5-(chloromethyl)-1-methyl-1H-pyrazole (CAS 84547-63-7)
- 5-(chloromethyl)-1-methyl-imidazole (CAS 89180-90-5)
- 3-(Chloromethyl)-4-methyltetrahydrofuran (CAS 1202400-53-0)
- 2-(Chloromethyl)tetrahydro-2H-pyran (CAS 18420-41-2)
- 3-(Chloromethyl)-3-ethyloxetane (CAS 2177-22-2)
Recommended Standards
- 4-(2-chloroethyl)-1H-pyrazole (CAS 438475-37-7)
- 1-(2-chloroethyl)pyrazole (CAS 96450-53-2)
- 5-(2-chloroethyl)-1H-pyrazole (CAS 57245-85-9)
- 3-chloro-1-ethyl-pyrazole (CAS 1254309-82-4)
- 1-(Thiophene-2-carboxamido)cycloheptane-1-carboxylic acid (CAS 1094718-65-6)
- (3-(Tert-butyl)bicyclo[1.1.1]Pentan-1-yl)methanamine (CAS 1886967-49-2)
- 1-(3,4-Difluoro-5-methoxyphenyl)-3-methylbutan-1-one (CAS 1443344-10-2)
- Ethyl 3-amino-4-(3-hydroxy-1-pyrrolidinyl)benzoate (CAS 1219967-21-1)
- (4-(3,5-Difluorophenyl)-1,1-dioxido-4H-benzo[b][1,4]thiazin-2-yl)(pyrrolidin-1-yl)methanone (CAS 1251698-75-5)
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Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com