5-Methyl-2-(2-nitrophenyl)-1H-pyrazol-3(2H)-one CAS 40339-61-5
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 40339-61-5 |
| Molecular Formula | C10H9N3O3 |
| Molecular Weight | 219.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies 5-Methyl-2-(2-nitrophenyl)-1H-pyrazol-3(2H)-one (CAS 40339-61-5), a pharmaceutical standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C10H9N3O3. Molecular weight: 219.20 g/mol. Batch-specific COA and technical support are available on request.
Physical & Chemical Properties
| Molecular Formula | C10H9N3O3 |
| Molecular Weight | 219.20 g/mol |
| Appearance | Pale yellow to 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 methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1968 |
| Nitrogen Atoms | 3 |
Related Methyl Standards
- 5-Ethyl-3-(4-nitrophenyl)-1,2,4-oxadiazole (CAS 10185-65-6)
- 5-Ethyl-3-(3-nitrophenyl)-1,2,4-oxadiazole (CAS 10364-69-9)
- 3-(2-Methyl-6-nitrophenyl)isoxazol-5-amine (CAS 1152517-46-8)
- 5-Methyl-2-(3-nitrophenyl)-2,4-dihydro-3H-pyrazol-3-one (CAS 119-16-4)
- 5-Methyl-1-(2-nitrophenyl)-2,3-dihydro-1h-imidazol-2-one (CAS 1197478-23-1)
- 1-(2-nitrophenyl)-3-prop-2-yn-1-ylurea (CAS 1197861-80-5)
- [4-(4-nitrophenyl)-1h-imidazol-2-yl]methanol (CAS 1340189-83-4)
- 5-methyl-1-(3-nitrophenyl)-2,3-dihydro-1H-imidazol-2-one (CAS 13870-56-9)
Recommended Standards
- 5-Methyl-1-(4-nitrophenyl)-1H-pyrazol-3(2H)-one (CAS 58332-40-4)
- 5-Methyl-2-(4-nitrophenyl)-1,2-dihydro-3H-pyrazol-3-one (CAS 35496-23-2)
- 5-Methyl-1-(2-nitrophenyl)-1H-pyrazol-3(2H)-one (CAS 67916-05-6)
- 1142210-12-5 4-({[5-(2-Fluorobenzyl)-1,3,4-thiadiazol-2-yl]-carbonyl}amino)benzoic acid 9407AC C17H12FN3O3S (CAS 1142210-12-5)
- 4-(4-Iodo-1h-pyrazol-1-yl)benzaldehyde (CAS 1340091-32-8)
- Dimethyl 4,4'-(ethene-1,2-diyl)(Z)-dibenzoate (CAS 143130-82-9)
- (3R,4S)-4-methoxytetrahydrofuran-3-ol (CAS 29750-90-1)
- 3-methylcyclopentan-1-amine (CAS 52430-83-8)
- 4-(Aminomethyl)-3-(difluoromethyl)pyridine-2,5-diamine (CAS 1806783-28-7)
- Tirzepatide Impurity 18 (CAS CATO-C4X-324018)
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