3-tert-butyl-1h-pyrazole-5-carboxylic acid 5-tert-Butyl-2H-pyrazole-3-carboxylic acid 5-tert-butyl-2 h-pyrazole-3-carboxylic acid 83405-71-4 CAS 83405-71-4
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 83405-71-4 |
| Molecular Formula | C8H12N2O2 |
| Molecular Weight | 168.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
High-purity 3-tert-butyl-1h-pyrazole-5-carboxylic acid 5-tert-Butyl-2H-pyrazole-3-carboxylic acid 5-tert-butyl-2 h-pyrazole-3-carboxylic acid 83405-71-4 (CAS 83405-71-4) pharmaceutical standards reference standard. Molecular formula: C8H12N2O2. Molecular weight: 168.19 g/mol. Produced by CATO, one of China's leading reference material manufacturers, with COA documentation and global shipping.
Physical & Chemical Properties
| Molecular Formula | C8H12N2O2 |
| Molecular Weight | 168.19 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1980 |
| Nitrogen Atoms | 2 |
Recommended Standards
- 78208-73-8 1-Methyl-3-(propan-2-yl)-1H-pyrazole-5-carboxylic acid DTXSID70390127 (CAS 78208-73-8)
- 90434-64-3 1,4-Bis(aziridin-1-yl)butane-2,3-dione DTXSID10666373 (CAS 90434-64-3)
- (2,4-DIMETHOXYPHENYL)METHANOL 2,4-Dimethoxybenzyl alcohol 7314-44-5 AS00570 ASISCHEM V71844 OTAVA-BB 1780299 RARECHEM AL BD 0025 (CAS 7314-44-5)
- (E)-2,6-Diphenyl-2-styryl-2H-pyran-4(3H)-one (CAS 102893-97-0)
- Tetrahydrolachnophyllum lactone (CAS 56407-87-5)
- 1-{8-methoxy-4,10-dioxatricyclo[7.3.0.0³,⁷]dodeca-1,3(7),5,8,11-pentaen-2-yl}ethan-1-one (CAS 1891478-44-6)
- Methyl 6-(1-ethyl-1H-pyrazol-5-yl)-1,3-dimethyl-1H-pyrazolo[3,4-b]pyridine-4-carboxylate (CAS 1171378-32-7)
- 1-(2-Hydroxyethyl)-3-(p-tolylamino)-1H-pyrrole-2,5-dione (CAS 607692-48-8)
- ethyl 7-bromo-4-oxo-pyrido[1,2-a]pyrimidine-3-carboxylate (CAS 16867-56-4)
- D-Tyr1-Tirzepatide (CAS CATO-CPTD788928)
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