16a-Hydroxyestrone sodium-3-sulfate CAS 81072-42-6
| CAS No. | 81072-42-6 |
| Molecular Formula | C18H21O6S |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
16a-Hydroxyestrone sodium-3-sulfate (CAS 81072-42-6) is a high-purity analytical reference standard with the molecular formula C18H21O6SNa and a molecular weight of 388.41 g/mol.
Structurally, 16a-Hydroxyestrone sodium-3-sulfate (C18H21O6SNa) 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 388.41 g/mol, it falls into the moderately-high-molecular-weight range. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
As a certified reference material (CRM), 16a-Hydroxyestrone sodium-3-sulfate meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C18H21O6S Na |
| Molecular Weight | 388.41 g/mol |
| 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) | 8.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1980 |
| Sulfur Atoms | 1 |
Related a Standards
- [2,3,4-13C3]-16α-Hydroxyestrone (CAS 1241684-28-5)
- 16α-Hydroxyestrone diacetate (CAS 1247-71-8)
- 16a-Hydroxyestrone 16-β-D-glucuronide (CAS 15270-34-5)
- 2-Hydroxyestrone sodium 3-sulfate (CAS 21343-47-5)
- 16b-Hydroxyestrone sodium-3-sulfate (CAS 54800-12-3)
- 2-Hydroxyestrone-3-methyl ether-d (CAS 5976-63-6)
- 3-Hydroxyestrone sodium 2-sulfate (CAS 82803-17-6)
- 16b-Hydroxyestrone (CAS 966-06-3)
Recommended Standards
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- Methyl 3-bromo-5-iodo-2-methylbenzoate, 97% (CAS 1370600-52-4)
- [(1-ethyl-1h-pyrrol-2-yl)methyl](methyl)amine (CAS 1211513-33-5)
- 5-propyl-2-(1H-pyrrol-1-yl)-1,3-thiazole-4-carboxylic acid (CAS 1623084-02-5)
- 4-Chloro-2-(piperidin-4-yl)phenol hydrochloride (CAS 1311254-53-1)
- N-(3-(methylsulfinyl)butyl)thietan-3-amine (CAS 1866280-34-3)
- 2-Chloro-1-(1-(2,5-dimethylphenyl)-2,5-dimethyl-1h-pyrrol-3-yl)ethan-1-one (CAS 923831-62-3)
- Palmitoyl Tripeptide-5 TFA (CAS 623172-55-4（free base）)
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