4-tert-Butylcalix[5]arene CAS 81475-22-1
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 81475-22-1 |
| Molecular Formula | C55H70O5 |
| Molecular Weight | 811.14 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-tert-Butylcalix[5]arene (CAS 81475-22-1) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C55H70O5. Molecular weight: 811.14 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C55H70O5 |
| Molecular Weight | 811.14 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, 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) | 21.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1980 |
Related tert Standards
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- 4-tert-Butylcalix[8]arene (CAS 68971-82-4)
- 4-tert-Butylcalix(6)arene-hexaaceticacidhexaethylester (CAS 92003-62-8)
Recommended Standards
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- 2,2'-Methylene-bis(4-Methyl-6-tert-Butylphenyl)-Terephthalate (CAS 57569-40-1)
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- tert-Butyl (5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzo[d]thiazol-2-yl)carbamate (CAS 1392846-50-2)
- 1-Hydroxy-1-oxo-1lambda5-benzo[d][1,2]iodaoxol-3(1H)-one compound with pyridine (1:1) (CAS 1380548-11-7)
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- Semaglutide impurity 203 (CAS CATO-C4X-2226203)
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