1-Hydroxy-3,5-diphenylpyrazin-2(1H)-one CAS 33837-38-6
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 33837-38-6 |
| Molecular Formula | C16H12N2O2 |
| Molecular Weight | 264.28 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
1-Hydroxy-3,5-diphenylpyrazin-2(1H)-one (CAS 33837-38-6) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C16H12N2O2. Molecular weight: 264.28 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C16H12N2O2 |
| Molecular Weight | 264.28 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1966 |
| Nitrogen Atoms | 2 |
Related Hydroxy Standards
- N-(2-Hydroxy-1,1-dimethylethyl)-3-(3-nitrophenyl)acrylamide (CAS 100098-62-2)
- Phenyl 1-hydroxy-2-naphthoate (CAS 132-54-7)
- 2-Hydroxy-5-(naphthalen-2-yl)benzoic acid (CAS 151826-05-0)
- 2-Hydroxy-5-(naphthalen-1-yl)benzoic acid (CAS 1580484-27-0)
- Methyl 4-hydroxy-1-(phenylcarbamoyl)pyrrolidine-2-carboxylate (CAS 183290-11-1)
- (2-Hydroxy-3-methylquinoxalin-6-yl)(phenyl)methanone (CAS 325469-51-0)
- (2Z)-6-Hydroxy-2-[(2E)-3-phenylprop-2-en-1-ylidene]-1-benzofuran-3(2H)-one (CAS 88281-20-3)
- 1-Hydroxy-N-pyridin-2-yl-2-naphthamide (CAS 5355-36-2)
Recommended Standards
- 1H,1'H-[2,3'-Biindole]-2',3-diol (CAS 75038-06-1)
- 1-Ethyl-6-(pyrazin-2-yloxy)-1H-indole-3-carbonitrile (CAS 876733-19-6)
- 1-Hydroxy-N-pyridin-3-yl-2-naphthamide (CAS 63210-47-9)
- 1-Acetyl-4-(4-fluoro-phenyl)-piperazine-2-carboxylic acid (CAS 1316217-52-3)
- Ethyl 2-bromo-5-(trifluoromethyl)isonicotinate (CAS 1227571-51-8)
- 1-Chloro-3-(4-fluorophenyl)propan-2-one (CAS 303967-88-6)
- 4-(Cyclopenta-2,4-dien-1-ylidenemethyl)-N,N-dimethylaniline (CAS 2428-22-0)
- 3,4-Diisopropylfuran-2,5-dione (CAS 35068-24-7)
- N-[2-(p-Bromocinnamylamino)ethyl]-5-Isoquinoline Sulfonamide (CAS 127243-85-0)
- Peptide YY (canine, mouse, porcine, rat) trifluoroacetate salt (CAS 81858-94-8)
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