4-(Naphthalen-2-ylmethylene)-1-phenylpyrazolidine-3,5-dione CAS 820236-91-7
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 820236-91-7 |
| Molecular Formula | C20H14N2O2 |
| Molecular Weight | 314.34 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-(Naphthalen-2-ylmethylene)-1-phenylpyrazolidine-3,5-dione (CAS 820236-91-7) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C20H14N2O2. Molecular weight: 314.34 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C20H14N2O2 |
| Molecular Weight | 314.34 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
| Nitrogen Atoms | 2 |
Related Naphthalen Standards
- 5-(Naphthalen-2-yl)-1-phenyl-1h-pyrazole-3-carboxylic acid (CAS 144252-16-4)
- (3Z)-3-[2-(Naphthalen-2-yl)-2-oxoethylidene]-1,2,3,4-tetrahydroquinoxalin-2-one (CAS 273196-12-6)
- (E)-2-(naphthalen-2-yl)-3-(2-nitrovinyl)-1H-indole (CAS 94464-02-5)
- 1-(Naphthalen-2-yl)-5-phenyl-1H-pyrazole-3-carboxylic acid (CAS 62160-34-3)
- 3-(naphthalen-1-yl)-1-phenyl-1H-pyrazole-4-carboxylic acid (CAS 380154-33-6)
- 5-(Naphthalen-1-yl)-1-phenyl-1h-pyrazole-3-carboxylic acid (CAS 957320-23-9)
- 2-(Naphthalen-1-yl)-2H-chromene (CAS 477-74-7)
- 2-((5-Ethyl-4-(naphthalen-1-yl)-4H-1,2,4-triazol-3-yl)thio)acetic acid (CAS 886498-37-9)
Recommended Standards
- 4-(Acridin-9-ylamino)benzoic acid (CAS 64894-83-3)
- 4,4'-(1-(Pyridin-3-ylmethyl)-1H-1,2,4-triazole-3,5-diyl)dipyridine (CAS 55391-41-8)
- 4-(4-Methoxyphenyl)-4-oxo-2-{[(pyridin-3-yl)methyl]amino}butanoic acid (CAS 329929-07-9)
- (5E)-4-(4-Methoxyphenyl)-5-{[(4-methylphenyl)methoxy]imino}-2-(1H-pyrrol-1-yl)-5,6,7,8-tetrahydro-4H-chromene-3-carbonitrile (CAS 860649-69-0)
- 2-(tert-Butyl)-6-hydroxybenzaldehyde (CAS 344303-52-2)
- 1-(Benzo[d]thiazol-2-yl)-3-phenyl-1H-pyrazol-5-ol (CAS 27979-00-6)
- 5-{[3-chloro-5-(trifluoromethyl)pyridin-2-yl](methyl)amino}-3-[1-(2,4-dichlorophenyl)-3-methyl-5-oxo-1,2,4-triazolidin-3-yl]-3aH,4H,5H,6H,6aH-pyrrolo[3,4-d][1,2]oxazole-4,6-dione (CAS 317822-47-2)
- 3-(propan-2-yl)piperidin-2-one (CAS 907561-37-9)
- 1-Iodo-4-propoxybenzene (CAS 95306-89-1)
- Macrocyclic Peptide flaviviridae Viruses InhibitorDISCONTINUED (CAS 1510840-70-6)
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