4-(Chloromethyl)-1-(2-fluoroethyl)-1H-pyrazole hydrochloride CAS 1855907-54-8
| CAS No. | 1855907-54-8 |
| Molecular Formula | C6H8ClFN2 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-(Chloromethyl)-1-(2-fluoroethyl)-1H-pyrazole hydrochloride (CAS 1855907-54-8) is a high-purity analytical reference standard with the molecular formula C6H8ClFN2HCl and a molecular weight of 199.05 g/mol.
Structurally, 4-(Chloromethyl)-1-(2-fluoroethyl)-1H-pyrazole hydrochloride (C6H8ClFN2HCl) contains a nitrile group, fluorine/chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 2.0, corresponding to approximately 2 ring(s) or double-bond equivalent(s). With a molecular weight of 199.05 g/mol, it falls into the medium-molecular-weight range. 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.
As a certified reference material (CRM), 4-(Chloromethyl)-1-(2-fluoroethyl)-1H-pyrazole hydrochloride 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 | C6H8ClFN2 HCl |
| Molecular Weight | 199.05 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) | 2.0 |
| CAS Registry Year (est.) | 1995 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 2 |
Related Chloromethyl Standards
- 7-(Chloromethyl)-3-methyl-5H-thiazolo[3,2-a]pyrimidin-5-one (CAS 100003-81-4)
- 7-(Chloromethyl)-2,3-dimethyl-5H-thiazolo[3,2-a]pyrimidin-5-one (CAS 100003-82-5)
- 7-(Chloromethyl)-3-(4-chlorophenyl)-5H-thiazolo[3,2-a]pyrimidin-5-one (CAS 100003-85-8)
- chloromethyl 2-ethoxy-2-methylpropanoate (CAS 1000296-74-1)
- 5-(chloromethyl)-N-(4-methylbenzyl)-1,3,4-thiadiazole-2-carboxamide (CAS 1000932-24-0)
- 5-(Chloromethyl)-7-ethoxy-2-(trifluoromethyl)-[1,2,4]triazolo[1,5-a]pyrimidine (CAS 1000932-47-7)
- 5-(chloromethyl)-N-(4-fluorobenzyl)-1,3,4-thiadiazole-2-carboxamide (CAS 1000932-60-4)
- 2-(Chloromethyl)-5,6-diphenylfuro[2,3-d]pyrimidin-4-amine (CAS 1000933-67-4)
Recommended Standards
- Defluoro Levofloxacin-d3 (CAS 1329836-14-7)
- 2-[1-[(6-Chloroimidazo[2,1-β][1,3]thiazol-5-yl)sulfonyl]-1H-indol-3-yl]ethylamine Hydrochloride (CAS 554403-08-6)
- 464-72-2 4VNT36L0QZ Benzopinacol 1,2-Ethanediol, 1,1,2,2-tetraphenyl- 1,1,2,2-Tetraphenylethane-1,2-diol AI3-09213 Benzophenone pinacol Benzopinacone Benzpinacol Benzpinacone alpha,alpha'-Bibenzhydrol EINECS 207-356-8 NSC 120377 1,1,2,2-Tetraphenyl-1,2-ethanediol Tetraphenyl-1,2-ethanediol Tetraphenylethylene glycol 1,1,2,2-Tetraphenylethylene glycol UNII-4VNT36L0QZ (CAS 464-72-2)
- 3-(Cyclohexylmethyl)-2-hydroxybenzamide (CAS 1243347-52-5)
- Vonoprazan Impurity 221 HCl (CAS 1978371-23-1 (free base))
- Sodium 2-isopropoxypropanoate (CAS 1006670-58-1)
- 4,5-Dichloro-2-(2,6-difluoro-4-(trifluoromethyl)phenoxy)aniline (CAS 2244085-40-1)
- N-(3-(1H-Purin-8-yl)-1H-pyrazol-4-yl)-2,6-difluorobenzamide (CAS 825618-87-9)
- 1556699-61-6 3-[(4-Chloro-6-fluoroquinolin-3-yl)sulfonyl]benzonitrile MFCD22549253 (CAS 1556699-61-6)
- Dendroaspis Natriuretic Peptide (CAS 255721-52-9)
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