1,3-Dimethyl-1H-thieno[2,3-c]pyrazole-5-carboxylic Acid CAS 25252-46-4
| CAS No. | 25252-46-4 |
| Molecular Formula | C8H8N2O2S |
| Molecular Weight | 196.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
1,3-Dimethyl-1H-thieno[2,3-c]pyrazole-5-carboxylic Acid (CAS 25252-46-4) is a high-purity analytical reference standard with the molecular formula C8H8N2O2S and a molecular weight of 196.23 g/mol.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, 1,3-Dimethyl-1H-thieno[2,3-c]pyrazole-5-carboxylic Acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 196.23 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
CATO manufactures 1,3-Dimethyl-1H-thieno[2,3-c]pyrazole-5-carboxylic Acid under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C8H8N2O2S |
| Molecular Weight | 196.23 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1964 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
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- 4,4'-Difluoro-3-(trifluoromethyl)-1,1'-biphenyl (CAS 1032507-08-6)
- SM-21 maleate (CAS 155058-71-2)
- 1-Fluoro-4-(1-isocyanatocyclopropyl)benzene (CAS 1226416-14-3)
- 5-(4,4-Dimethyl-4,5-dihydrooxazol-2-yl)pentan-1-ol (CAS 58241-40-0)
- 3-(Methylsulfinyl)-5-(trifluoromethyl)picolinic acid (CAS 1384870-13-6)
- N-propylthieno[2',3':4,5]imidazo[2,1-b]thiazole-2-carboxamide (CAS 930562-42-8)
- (Asp28)-Exenatide trifluoroacetate salt (CAS 1678417-24-7)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com