Estrone 3-Sulfate Sodium Salt CAS 438-67-5
| CAS No. | 438-67-5 |
| Molecular Formula | C18H21O5S |
| Molecular Weight | N/A |
| 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 Estrone 3-Sulfate Sodium Salt.
Estrone 3-Sulfate Sodium Salt (CAS 438-67-5) is a high-purity analytical reference standard with the molecular formula C18H21O5SNa and a molecular weight of 372.41 g/mol.
Structurally, Estrone 3-Sulfate Sodium Salt (C18H21O5SNa) contains a flavonoid core, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 8.5, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 372.41 g/mol, it falls into the moderately-high-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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.
Physical & Chemical Properties
| Molecular Formula | C18H21O5S Na |
| Molecular Weight | 372.41 g/mol |
| Purity | >95% |
| 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) | 8.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Sulfur Atoms | 1 |
Related Estrone Standards
- Estrone impurity 6 (CAS 1089-80-1)
- Estrone 3-sulfate potassium salt (CAS 1240-04-6)
- Estrone 3-Valerate (CAS 128788-26-1)
- Estrone 3-O-Sulfamate (CAS 148672-09-7)
- Estrone β-D-Glucuronide Sodium Salt (CAS 15087-01-1)
- Estrone 3-Methyl Ether (CAS 1624-62-0)
- Estrone Enol Diacetate (CAS 20592-42-1)
- Estrone beta-D-Glucuronide (CAS 2479-90-5)
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- 1-(1-(1H-Pyrrol-2-yl)isoquinolin-2(1H)-yl)ethanone (CAS 827320-68-3)
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