(1-Isopropyl-1h-pyrazol-3-yl)methanesulfonyl chloride CAS 1342545-79-2
| CAS No. | 1342545-79-2 |
| Molecular Formula | C7H11ClN2O2S |
| Molecular Weight | 222.69 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
(1-Isopropyl-1h-pyrazol-3-yl)methanesulfonyl chloride (CAS 1342545-79-2) is a high-purity analytical reference standard with the molecular formula C7H11ClN2O2S and a molecular weight of 222.69 g/mol.
Structurally, (1-Isopropyl-1h-pyrazol-3-yl)methanesulfonyl chloride (C7H11ClN2O2S) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 3.0, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 222.69 g/mol, it falls into the medium-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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), (1-Isopropyl-1h-pyrazol-3-yl)methanesulfonyl chloride 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 | C7H11ClN2O2S |
| Molecular Weight | 222.69 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, 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; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1991 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Isopropyl Standards
- 3-Methyl-1-isopropyl-1H-pyrazole-4-sulfonyl chloride (CAS 1006453-71-9)
- 1-Isopropyl-5-methyl-1H-pyrazole-3-sulfonyl chloride (CAS 1354704-57-6)
- (1-Isopropyl-1h-imidazol-2-yl)methanesulfonyl chloride (CAS 1420882-15-0)
- 3-(5-((Isopropyl(methyl)amino)methyl)thiophen-3-yl)prop-2-yn-1-amine (CAS 1250037-03-6)
- (2-Isopropyl-5-(methoxycarbonyl)pyridin-3-yl)boronic acid (CAS 2225154-67-4)
- (2-Isopropyl-6-(methoxycarbonyl)pyridin-4-yl)boronic acid (CAS 2225181-32-6)
- (5-Isopropyl-2-(methoxycarbonyl)pyridin-4-yl)boronic acid (CAS 2225179-97-3)
- 4-(3-Ethyl-5-isopropyl-4H-1,2,4-triazol-4-yl)piperidine (CAS 1030849-65-0)
Recommended Standards
- 1-Methyl-2-(propan-2-yl)-1H-imidazole-4-sulfonyl chloride (CAS 1340300-24-4)
- 1-(2-methylpropyl)-1H-imidazole-4-sulfonyl chloride (CAS 1339876-92-4)
- 5-Methyl-1-propyl-1H-pyrazole-3-sulfonyl chloride (CAS 1354706-09-4)
- 1,3-Diethyl-1H-pyrazole-4-sulfonyl chloride (CAS 1314911-02-8)
- 4-Chloro-2-(difluoromethoxy)benzo[d]thiazole (CAS 1805648-15-0)
- H-Thr(bzl)-obzl HCl (CAS 67580-86-3)
- 3-(1H-Imidazol-1-yl)-2-methyl-2H-chromene-6-carboxamide (CAS 89781-94-2)
- (Z)-2-amino-1-(4-methoxyphenyl)ethan-1-one oxime (CAS 82585-39-5)
- 2-Amino-5-(3,5-dichlorophenyl)isonicotinic acid (CAS 1261987-76-1)
- Tacrolimus Impurity 42 (CAS CATO-C4X-130042)
- Benzyl ((1R,3R)-3-aminocyclopentyl)carbamate (CAS 1378251-31-0)
- N-((1-methylpiperidin-3-yl)methyl)propan-2-amine (CAS 1304279-24-0)
- 2-(2-(1H-Indol-3-yl)-2-oxoacetamido)propanoic acid (CAS 97500-63-5)
- Neuropeptide GE (CAS 134748-04-2)
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