1-Methyl-5-(methylsulfonyl)-1H-pyrazole-4-carbonitrile CAS 2105948-93-2
| CAS No. | 2105948-93-2 |
| Molecular Formula | C6H7N3O2S |
| Molecular Weight | 185.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
As a certified reference material (CRM), 1-Methyl-5-(methylsulfonyl)-1H-pyrazole-4-carbonitrile 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.
1-Methyl-5-(methylsulfonyl)-1H-pyrazole-4-carbonitrile (CAS 2105948-93-2), molecular formula C6H7N3O2S and molecular weight 185.20 g/mol, is a CATO reference standard with documented purity and traceability.
Structurally, 1-Methyl-5-(methylsulfonyl)-1H-pyrazole-4-carbonitrile (C6H7N3O2S) contains an amide group, a sulfone group, a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 5.0, corresponding to approximately 5 ring(s) or double-bond equivalent(s). With a molecular weight of 185.20 g/mol, it falls into the medium-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
Physical & Chemical Properties
| Molecular Formula | C6H7N3O2S |
| Molecular Weight | 185.20 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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1997 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Methyl Standards
- 2-(Methylsulfonyl)isonicotinaldehyde (CAS 1211539-18-2)
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- 2-(Methylsulfonyl)nicotinaldehyde (CAS 1353878-25-7)
- 6-(Methylsulfonyl)picolinaldehyde (CAS 1780013-94-6)
- 5-(Methylsulfonyl)picolinaldehyde (CAS 31191-07-8)
- 2-Methyl-5-(methylsulfonyl)aniline (CAS 1671-48-3)
- 2-(Methylsulfonyl)benzylamine (CAS 410545-65-2)
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Recommended Standards
- 1-MEthanesulfinyl-3-nitrobenzene (CAS 3272-42-2)
- 2-((4-Aminopyrimidin-2-yl)thio)acetic acid (CAS 61445-73-6)
- 1-Fluoro-9H-carbazole (CAS 391-26-4)
- 2-((5-Fluoropyrimidin-4-yl)oxy)-N,N-dimethylethanamine (CAS 374679-89-7)
- 5-Methyl-2-phenylpyridine-3-carboxaldehyde (CAS 1428234-78-9)
- Tricyclohexylphosphine[1,3-bis(2,4,6-trimethylphenyl)-4,5-dihydroimidazol-2-ylidene][(phenylthio)methylene]ruthenium(II) dichloride (CAS 1155422-69-7)
- (1R,2R,3r,8S)-1-(bromomethyl)cubane (CAS 135191-72-9)
- 2-((3,4-Dichlorophenyl)amino)-1H-purin-6(9H)-one (CAS 123994-81-0)
- [(R)-1-(2-Chloro-acetyl)-piperidin-3-yl]-cyclopropyl-carbamic acid benzyl ester (CAS 1353962-54-5)
- 6-Methyl-4,5,6,7-tetrahydrobenzo[b]thiophene-2-carboxylic acid (CAS 900137-02-2)
- 2-[(3-bromo-4-methoxyphenyl)methyl]-3-hydroxypropanenitrile (CAS 1275190-08-3)
- 4-Iodopyridine-2-carboxylic Acid (CAS 405939-79-9)
- Ethyl 5-aminothiophene-3-carboxylate (CAS 385785-52-4)
- Semaglutide impurity 30 (CAS CATO-C4X-222630)
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