| CAS No. | 312934-03-5 |
| Molecular Formula | C21H24O4 |
| Molecular Weight | 340.41 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Order (S)-5,5',6,6'-Tetrahydroxy-3,3,3',3'-tetramethyl-1,1'-spirobiindane (CAS 312934-03-5) pharmaceutical standards reference standard from CATO: ISO 17034 accredited producer, 130,000+ catalog items in stock. Molecular formula: C21H24O4. Molecular weight: 340.41 g/mol. COA included with every batch.
| Molecular Formula | C21H24O4 |
| Molecular Weight | 340.41 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 chloroform, dichloromethane, ethyl acetate, DMSO |
| 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.) | 2025 |