2,5-Bis(methoxycarbonyl)-3,4-diphenylcyclopentadienone CAS 16691-79-5
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 16691-79-5 |
| Molecular Formula | C21H16O5 |
| Molecular Weight | 348.35 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
High-purity 2,5-Bis(methoxycarbonyl)-3,4-diphenylcyclopentadienone (CAS 16691-79-5) pharmaceutical standards reference standard. Molecular formula: C21H16O5. Molecular weight: 348.35 g/mol. Produced by CATO, one of China's leading reference material manufacturers, with COA documentation and global shipping.
Physical & Chemical Properties
| Molecular Formula | C21H16O5 |
| Molecular Weight | 348.35 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 methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 14.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1961 |
Related Bis Standards
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- 2-(2-Methoxycarbonyl-4-nitrophenyl)-5-nitrobenzoic acid (CAS 710327-97-2)
- 1-Boc-5-(methoxycarbonyl)pyrrole-3-boronic acid pinacol ester, 97% (CAS 942070-38-4)
- Ethyl 5-(2-(methoxycarbonyl)thiophen-3-yl)-4,6-dioxo-1,3a,4,5,6,6a-hexahydropyrrolo[3,4-c]pyrazole-3-carboxylate (CAS 317821-62-8)
- 2-((3-(Methoxycarbonyl)-5,6-dihydro-4H-cyclopenta[b]thiophen-2-yl)carbamoyl)benzoic acid (CAS 328024-25-5)
- 2-[({[4-(methoxycarbonyl)phenyl]carbamoyl}methyl)sulfanyl]benzoic acid (CAS 326015-91-2)
- 2-[3,5-bis(methoxycarbonyl)-4-methylthiophene-2-sulfonamido]acetic acid (CAS 612044-88-9)
- 5-(Methoxycarbonyl)-1,5-dimethyl-2-[2-(trifluoro-methyl)phenyl]-3-pyrrolidinecarboxylic acid (CAS 1052611-53-6)
Recommended Standards
- 1,6-Diaminohexane-<I>N</I>,<I>N</I>,<I>N</I>′,<I>N</I>′-tetraacetic acid (CAS 1633-00-7)
- Bis(4-aminophenyl) terephthalate (CAS 16926-73-1)
- Diethyl 2-(((benzyloxy)carbonyl)amino)-2-cyanosuccinate (CAS 159345-13-8)
- 4-(2-Chloroacetyl)-1,5-dimethyl-2-phenyl-1,2-dihydro-3H-pyrazol-3-one (CAS 6630-73-5)
- Desloratadine-d7 (major) (CAS 1795024-82-6)
- 1,6-dimethyl-2,4-dioxo-1,2,3,4-tetrahydropyrimidine-5-carbonitrile (CAS 5900-41-4)
- n-((1h-Imidazol-2-yl)methyl)-2-methoxypyridin-3-amine (CAS 1248929-21-6)
- 2-(3-Phenylisoxazol-5-yl)acetic acid (CAS 3919-84-4)
- 14390-75-1 Tellurium, isotope of mass 128 Tellurium-128 128Te (CAS 14390-75-1)
- Semaglutide impurity 78 (CAS CATO-C4X-222678)
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