| CAS No. | 32737-35-2 |
| Molecular Formula | C21H24O6 |
| Molecular Weight | 372.41 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
6,6',7,7'-Tetrahydroxy-4,4,4',4'-tetramethyl-2,2'-spirobichroman (CAS 32737-35-2) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C21H24O6. Molecular weight: 372.41 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
| Molecular Formula | C21H24O6 |
| Molecular Weight | 372.41 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1966 |