Calcium (Z)-5-((3aS,5R,6R,6aR)-5-hydroxy-6-((S,E)-3-hydroxyoct-1-en-1-yl)-3a-methylhexahydropentalen-2(1H)-ylidene)pentanoate CAS 81703-55-1
| CAS No. | 81703-55-1 |
| Molecular Formula | 2*C22H35O4 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Calcium (Z)-5-((3aS,5R,6R,6aR)-5-hydroxy-6-((S,E)-3-hydroxyoct-1-en-1-yl)-3a-methylhexahydropentalen-2(1H)-ylidene)pentanoate (CAS 81703-55-1) is a high-purity analytical reference standard with the molecular formula C22H35O4Ca and a molecular weight of 403.60 g/mol.
The molecular framework of Calcium (Z)-5-((3aS,5R,6R,6aR)-5-hydroxy-6-((S,E)-3-hydroxyoct-1-en-1-yl)-3a-methylhexahydropentalen-2(1H)-ylidene)pentanoate (C22H35O4Ca) is characterized by a steroid core, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
Physical & Chemical Properties
| Molecular Formula | 2*C22H35O4 Ca |
| Molecular Weight | 403.60 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 5.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1980 |
Recommended Standards
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