3-(Chloromethyl)-1-methylpyrazole CAS 84547-64-8
| CAS No. | 84547-64-8 |
| Molecular Formula | C5H7ClN2 |
| Molecular Weight | 130.58 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
3-(Chloromethyl)-1-methylpyrazole (CAS 84547-64-8), molecular formula C5H7ClN2 and molecular weight 130.58 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C5H7ClN2, 3-(Chloromethyl)-1-methylpyrazole contains a nitrile group, chlorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 130.58 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
As a certified reference material (CRM), 3-(Chloromethyl)-1-methylpyrazole 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 | C5H7ClN2 |
| Molecular Weight | 130.58 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 | 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.) | 1981 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chloromethyl Standards
- 2-(Chloromethyl)-1-methyl-1H-imidazole (CAS 19225-92-4)
- 1-(Chloromethyl)-4-methyl-1h-pyrazole (CAS 757152-30-0)
- 2-(Chloromethyl)-4-methyl-1H-imidazole (CAS 863399-37-5)
- 3-(Chloromethyl)-5-methyl-1H-pyrazole (CAS 41669-05-0)
- 4-(Chloromethyl)-2-methyl-1H-imidazole (CAS 408325-19-9)
- 3-(Chloromethyl)cyclopent-2-enone (CAS 110874-87-8)
- 3-(Chloromethyl)-2-methylfuran (CAS 14497-33-7)
- 4-(Chloromethyl)cyclohex-1-ene (CAS 2555-08-0)
Recommended Standards
- 2-Chloro-1-ethyl-1H-imidazole (CAS 946061-13-8)
- 3-Chloro-1,4-dimethyl-1H-pyrazole (CAS 228862-16-6)
- 1-Morpholinopropan-2-one oxime (CAS 92503-13-4)
- 3-Chloro-1,5-dimethyl-1H-pyrazole (CAS 51500-32-4)
- (3-(2-Chlorophenyl)-1,2,4-Oxadiazol-5-Yl)Methanol (CAS 188878-36-6)
- 1-(Tert-butylsulfonyl)-4-chlorobutane (CAS 126526-61-2)
- 3,5-dichloro-1H-pyrrole-2-carbaldehyde (CAS 1783867-68-4)
- (2,2,5,5-Tetramethyltetrahydrofuran-3-yl)methanamine (CAS 1542697-90-4)
- Aluminum 1,8,15,22-tetraphenoxy-29H,31H-phthalocyanine Chloride (CAS 155613-94-8)
- 3-Methyl-1,2-cyclopentanedione (CAS 765-70-8)
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- 4-((Tetrahydro-2H-thiopyran-4-yl)amino)butan-2-ol (CAS 1341641-40-4)
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