4,4-Dihydroxy-3-methyl-1H-pyrazol-5(4H)-one CAS 221325-59-3
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 221325-59-3 |
| Molecular Formula | C4H6N2O3 |
| Molecular Weight | 130.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
High-purity 4,4-Dihydroxy-3-methyl-1H-pyrazol-5(4H)-one (CAS 221325-59-3) pharmaceutical standards reference standard. Molecular formula: C4H6N2O3. Molecular weight: 130.10 g/mol. Produced by CATO, one of China's leading reference material manufacturers, with COA documentation and global shipping.
Physical & Chemical Properties
| Molecular Formula | C4H6N2O3 |
| Molecular Weight | 130.10 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| 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.) | 2020 |
| Nitrogen Atoms | 2 |
Related Dihydroxy Standards
- (S)-3,4-dihydroxy-5-methylfuran-2(5H)-one (CAS 119006-88-1)
- 3,4-Dihydroxy-5-methylfuran-2(5H)-one (CAS 3566-57-2)
- trans-(±)-3,5-Dihydroxy-cyclohexanone (CAS 165523-04-6)
- 2,3-Dihydroxy-2,3-dimethylbutanenitrile (CAS 26429-38-9)
- 2,4-Dihydroxy-6-methylpyridine (CAS 3749-51-7)
- 3,4-Dihydroxy-1-methyl-1H-pyrrol-2(5H)-one (CAS 156861-94-8)
- 5,6-Dihydroxy-4(3H)-pyrimidinone (CAS 98020-41-8)
- (4R)-4,5-Dihydroxy-2,3-pentandione (CAS 188674-57-9)
Recommended Standards
- 4,5-Dioxovaleric Acid (CAS 5976-90-9)
- 2-Oxotetrahydrofuran-3-carboxylic Acid (CAS 4360-91-2)
- 4,6-Difluoro-2-pyridinamine (CAS 938443-45-9)
- tert-Butyl 6-fluoro-3-(hydroxymethyl)indole-1-carboxylate (CAS 1260801-80-6)
- (BiBOE)2S2 817637-79-9 ATRP (Bio)degradable Initiator BiBOEDS Bis[2-(2 inverted exclamation marka-bromoisobutyryloxy)ethyl]disulfide (CAS 817637-79-9)
- 2-(Phenylamino)cyclohexan-1-ol (CAS 38382-30-8)
- [2-(2-Fluorophenyl)-1,3-thiazol-4-yl]acetic acid (CAS 879070-41-4)
- 4,4-dimethyl-3,4-dihydro-2H-1-benzopyran (CAS 40614-27-5)
- 2-(4-Bromophenoxy)-2,2-difluoroacetic acid (CAS 1153776-34-1)
- Semaglutide impurity 23 (CAS CATO-C4X-222623)
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