3,5-dimethyl-1-(2-methylpropyl)-1H-pyrazole-4-sulfonamide CAS 1251037-85-0
| CAS No. | 1251037-85-0 |
| Molecular Formula | C9H17N3O2S |
| Molecular Weight | 231.32 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, 3,5-dimethyl-1-(2-methylpropyl)-1H-pyrazole-4-sulfonamide (C9H17N3O2S) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage. 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 231.32 g/mol, it falls into the medium-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
3,5-dimethyl-1-(2-methylpropyl)-1H-pyrazole-4-sulfonamide (CAS 1251037-85-0), molecular formula C9H17N3O2S and molecular weight 231.32 g/mol, is a CATO reference standard with documented purity and traceability.
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 | C9H17N3O2S |
| Molecular Weight | 231.32 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| 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 |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1990 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related dimethyl Standards
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Recommended Standards
- 5-benzyl-5,6-dihydro-4h-pyrrolo[3,4-d][1,3]thiazol-2-amine (CAS 1310078-38-6)
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- 1-(Tert-butyl)-3,5-dimethyl-1H-pyrazole-4-sulfonamide (CAS 1247714-73-3)
- 5-(1,2,3,4-Tetrahydronaphthalen-1-yl)-1,3,4-thiadiazol-2-amine (CAS 1342137-94-3)
- Reboxetine Mesylate (CAS 93851-87-7)
- 4-Hydroxy-2-(methylthio)benzo[d]oxazole (CAS 1806570-91-1)
- 2-((3-((Furan-2-ylmethyl)carbamoyl)phenyl)carbamoyl)benzoic acid (CAS 940524-55-0)
- Methyl 6-amino-2-chloro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)nicotinate (CAS 2814523-40-3)
- (S)-1-Acetyl-N-((S)-1-amino-1-oxo-3-phenylpropan-2-yl)-N-methylpyrrolidine-2-carboxamide (CAS 63509-00-2)
- (3,5-Dimethylisothiazol-4-yl)boronic acid (CAS 1288963-92-7)
- n1,n2-Dicyclopropyl-n1-methylethane-1,2-diamine (CAS 1182800-77-6)
- 3-Amino-5-(sec-butyl)pyrazole (CAS 56367-25-0)
- (E)-3-Methyl-4-oxobut-2-en-1-yl acetate (CAS 26586-02-7)
- Semaglutide impurity 80 (CAS CATO-C4X-222680)
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