4-(3-Chloropropyl)-1-methyl-1h-pyrazole hydrochloride CAS 1251925-28-6
| CAS No. | 1251925-28-6 |
| Molecular Formula | C7H11ClN2 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-(3-Chloropropyl)-1-methyl-1h-pyrazole hydrochloride (CAS 1251925-28-6), molecular formula C7H11ClN2HCl and molecular weight 195.09 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 4-(3-Chloropropyl)-1-methyl-1h-pyrazole hydrochloride (C7H11ClN2HCl) is characterized by a nitrile group, 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.
As a certified reference material (CRM), 4-(3-Chloropropyl)-1-methyl-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 | C7H11ClN2 HCl |
| Molecular Weight | 195.09 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.) | 1990 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chloropropyl Standards
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- N-(2-Chloropropyl)morpholine Hydrochloride (CAS 100859-99-2)
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Recommended Standards
- 2-(2-Chloroethyl)-5-(4-chlorophenyl)oxazole (CAS 70996-76-8)
- (S)-2-(2-(bis(4-(trifluoromethyl)phenyl)phosphanyl)phenyl)-4-(tert-butyl)-4,5-dihydrooxazole (CAS 944836-16-2)
- 1-(3-Iodophenyl)-1h-pyrazole-3-carboxylic acid (CAS 1152560-22-9)
- O4-tert-butyl O6-methyl 1,4-oxazepane-4,6-dicarboxylate (CAS 1820736-58-0)
- 2-Chloro-n-({2-[(2-oxopyrrolidin-1-yl)methyl]phenyl}methyl)acetamide (CAS 1334148-72-9)
- 4-(Difluoromethyl)-5,6-diiodopyridine-3-sulfonamide (CAS 1805292-95-8)
- 6-Methyl-1H-pyrrolo[2,3-b]pyridine-3-carboxylic acid (CAS 1000340-27-1)
- (3-Chlorobenzyl)-L-proline hydrochloride (CAS 1217822-94-0)
- 1-(2,5-Dimethylbenzoyl)piperidine-2-carboxylic acid (CAS 1103141-28-1)
- Liraglutide Impurity 31 (CAS CATO-C4X-199231)
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