5,8-Dimethyl-6b,8,12b,12c-tetrahydrocyclobuta[1,2-c:4,3-c']diquinoline-6,7(5H,6aH)-dione CAS 7252-81-5
| CAS No. | 7252-81-5 |
| Molecular Formula | C20H18N2O2 |
| Molecular Weight | 318.37 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 5,8-Dimethyl-6b,8,12b,12c-tetrahydrocyclobuta[1,2-c:4,3-c']diquinoline-6,7(5H,6aH)-dione.
5,8-Dimethyl-6b,8,12b,12c-tetrahydrocyclobuta[1,2-c:4,3-c']diquinoline-6,7(5H,6aH)-dione (CAS 7252-81-5) is a high-purity analytical reference standard with the molecular formula C20H18N2O2 and a molecular weight of 318.37 g/mol.
5,8-Dimethyl-6b,8,12b,12c-tetrahydrocyclobuta[1,2-c:4,3-c']diquinoline-6,7(5H,6aH)-dione (C20H18N2O2) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 5,8-Dimethyl-6b,8,12b,12c-tetrahydrocyclobuta[1,2-c:4,3-c']diquinoline-6,7(5H,6aH)-dione under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C20H18N2O2 |
| Molecular Weight | 318.37 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) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1959 |
| Nitrogen Atoms | 2 |
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