4-Methyl-5-(thiophen-2-yl)-1H-pyrazole-3-carboxylic acid CAS 890621-27-9
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 890621-27-9 |
| Molecular Formula | C9H8N2O2S |
| Molecular Weight | 208.24 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Order 4-Methyl-5-(thiophen-2-yl)-1H-pyrazole-3-carboxylic acid (CAS 890621-27-9) pharmaceutical standards reference standard from CATO: ISO 17034 accredited producer, 130,000+ catalog items in stock. Molecular formula: C9H8N2O2S. Molecular weight: 208.24 g/mol. COA included with every batch.
Physical & Chemical Properties
| Molecular Formula | C9H8N2O2S |
| Molecular Weight | 208.24 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Methyl Standards
- 5-(5-Methyl-thiophen-2-yl)-2H-pyrazole-3-carboxylic acid (CAS 1025010-00-7)
- 1-Methyl-3-(thiophen-2-yl)-1h-pyrazole-4-carboxylic acid (CAS 1152510-37-6)
- 1-(Thiophen-2-ylmethyl)-1H-pyrazole-4-carboxylic acid (CAS 1154881-88-5)
- 1-Methyl-3-(thiophen-3-yl)-1H-pyrazole-4-carboxylic acid (CAS 1248613-51-5)
- (3Z)-3-[(Thiophen-2-yl)methylidene]piperazine-2,5-dione (CAS 338416-12-9)
- 1-Methyl-3-(thiophen-2-yl)-1H-pyrazole-5-carboxylic acid (CAS 871825-56-8)
- 1-Methyl-5-(thiophen-2-yl)-1H-pyrazole-3-carboxylic acid (CAS 869901-15-5)
- 2-(3-(Thiophen-2-yl)-1H-pyrazol-1-yl)acetic acid (CAS 959582-96-8)
Recommended Standards
- 4-(2-Methyl-1,3-thiazol-4-yl)-1h-pyrrole-2-carboxylic acid (CAS 871547-64-7)
- 5-((5-Methylthiophen-3-yl)oxy)pyrimidin-2(1H)-one (CAS 96518-97-7)
- 4-(2-Amino-1,3-thiazol-4-yl)benzene-1,3-diol (CAS 90850-44-5)
- Ethyl 2-amino-3-(hydroxymethyl)cyclopentanecarboxylate (CAS 757915-65-4)
- 3,3,3-Trifluoro-N-hydroxypropanimidamide (CAS 1016726-53-6)
- 3-(2-(4-(5-(Methoxymethyl)-2-oxooxazolidin-3-yl)phenoxy)ethyl)benzonitrile (CAS 79038-97-4)
- 3,4-Diethyl-1H-pyrrole-2-carbaldehyde (CAS 1006-26-4)
- Chloroprocaine Impurity 5 (CAS CATO-C4X-32865)
- Tadalafil Impurity 14 (CAS 7524-52-9)
- Semaglutide impurity 101 (CAS CATO-C4X-2226101)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 13829788188 / jacky.chen@cato-chem.com