N,N,3,5-Tetramethyl-1H-pyrazole-4-sulfonamide hydrochloride CAS 2126159-97-3
| CAS No. | 2126159-97-3 |
| Molecular Formula | C7H13N3O2S |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
N,N,3,5-Tetramethyl-1H-pyrazole-4-sulfonamide hydrochloride (CAS 2126159-97-3) is a high-purity analytical reference standard with the molecular formula C7H13N3O2SHCl and a molecular weight of 239.72 g/mol.
Structurally, N,N,3,5-Tetramethyl-1H-pyrazole-4-sulfonamide hydrochloride (C7H13N3O2SHCl) 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 2.0, corresponding to approximately 2 ring(s) or double-bond equivalent(s). With a molecular weight of 239.72 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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C7H13N3O2S HCl |
| Molecular Weight | 239.72 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 | Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 2.0 |
| CAS Registry Year (est.) | 1997 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Recommended Standards
- N-(4-Chloro-3-nonylisoxazol-5-yl)acetamide (CAS 92088-05-6)
- 2-chloro-8-iodopyrido[4,3-d]pyrimidine (CAS 1562987-94-3)
- 3-bromo-N-(4-fluorophenyl)propanamide (CAS 135154-75-5)
- 2-Methyl-5-(3-methyl-[1,2,4]triazolo[3,4- b ][1,3,4]thiadiazol-6-yl)-phenylamine (CAS 626223-64-1)
- Venetoclax Impurity 38 (CAS CATO-C4X-249538)
- 4-(Pyrrolidine-1-carbonyl)benzaldehyde (CAS 80020-05-9)
- Dansyl-L-leucine (CAS 1100-22-7)
- 4-(Chlorosulfonyl)-2-nitrobenzoic Acid (CAS 54090-40-3)
- PMA HCl (p-Methoxyamphetamine HCl) (CAS 52740-56-4)
- PACAP-Related Peptide (PRP), rat (CAS 132769-35-8)
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