5-(4-Aminophenyl)-2,3-dihydro-1h-pyrazol-3-one CAS 908254-18-2
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 908254-18-2 |
| Molecular Formula | C9H9N3O |
| Molecular Weight | 175.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-(4-Aminophenyl)-2,3-dihydro-1h-pyrazol-3-one (CAS 908254-18-2) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C9H9N3O. Molecular weight: 175.19 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C9H9N3O |
| Molecular Weight | 175.19 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 |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 3 |
Related Aminophenyl Standards
- 1-(4-Aminophenyl)-2,3-dihydro-1h-imidazol-2-one (CAS 1016728-19-0)
- 5-(4-Aminophenyl)-2,4-dihydro-3H-pyrazol-3-one (CAS 103755-57-3)
- 5-(4-Aminophenyl)oxazol-2-amine (CAS 13576-58-4)
- 5-(2-Aminophenyl)oxazol-2-amine (CAS 1934805-03-4)
- 5-(3-Aminophenyl)oxazol-2-amine (CAS 1936654-69-1)
- 1-(4-Aminophenyl)-1H-pyrazol-3(2H)-one (CAS 2044713-95-1)
- 3-(2-Aminophenyl)-1H-1,2,4-triazol-5-amine (CAS 890095-53-1)
- 5-(3-Aminophenyl)-2,4-dihydro-3H-pyrazol-3-one (CAS 915924-24-2)
Recommended Standards
- 5-(Aminomethyl)quinoxalin-6-ol (CAS 766462-63-9)
- 5-(3-Amino-4-methylphenyl)-2H-tetrazole (CAS 954848-82-9)
- 5-(Phenylamino)-1,2-dihydro-3H-pyrazol-3-one (CAS 246863-95-6)
- 5,6,7,8-Tetrahydrocyclohepta[c]pyrrol-4(2H)-one (CAS 113880-81-2)
- 1-Hexyl-4-(p-tolylethynyl)benzene (CAS 117923-35-0)
- ((4-Fluorophenyl)sulfonyl)leucine (CAS 251097-25-3)
- Dichloro(methyl)(3,3,4,4,5,5,6,6,6-nonafluorohexyl)silane (CAS 38436-16-7)
- 3-{[2-(2,4-difluorophenyl)-2-oxoethyl]carbamoyl}propanoic acid (CAS 1235439-12-9)
- 1,5-Bis(2-(bicyclo[2.2.1]hept-5-en-2-yl)ethyl)-1,1,3,3,5,5-hexamethyltrisiloxane (CAS 307496-39-5)
- Neuropeptide FF (CAS 99566-27-5)
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