3-Methoxy-7β-methyl-6β-(phenylsulfonyl) Estradiol CAS 156137-95-0
| CAS No. | 156137-95-0 |
| Molecular Formula | C26H32O4S |
| Molecular Weight | 440.59 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 3-Methoxy-7β-methyl-6β-(phenylsulfonyl) Estradiol is closely related to a steroid core, a sulfone group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
3-Methoxy-7β-methyl-6β-(phenylsulfonyl) Estradiol (CAS 156137-95-0) is a high-purity analytical reference standard with the molecular formula C26H32O4S and a molecular weight of 440.59 g/mol.
Based on its molecular formula C26H32O4S, 3-Methoxy-7β-methyl-6β-(phenylsulfonyl) Estradiol contains a steroid core, a sulfone group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 440.59 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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 | C26H32O4S |
| Molecular Weight | 440.59 g/mol |
| Purity | 97%+ |
| Storage | Store at room temperature, 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2001 |
| Sulfur Atoms | 1 |
Related Methoxy Standards
- 3-Methoxy-7α-methyl-6β-(phenylsulfonyl) Estradiol (CAS 153004-09-2)
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Recommended Standards
- 3-Bromo-7-(chlorodifluoromethyl)-2-methyl-5-[4-(trifluoromethyl)phenyl]pyrazolo[1,5-a]pyrimidine (CAS 439097-20-8)
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- m-PEG3-S-PEG3-Boc (CAS 2055040-96-3)
- Gadoteridol impurity 36 (CAS CATO-C4X-225736)
- 2-Bromo-4-cyanobenzoic acid (CAS 956218-04-5)
- 1-(2,4-Difluorophenyl)-5-oxopyrrolidine-3-carboxylic acid (CAS 923178-07-8)
- 5-(Benzyloxy)-2-chloro-3-methylpyridine (CAS 74650-80-9)
- 4-Methoxy-2-nitro-N-phenylaniline (CAS 5442-46-6)
- 1-Chloro-4-(ethylsulfonyl)benzene (CAS 7205-80-3)
- methyl (1R,2R,4S)-4-(((2R,4S,5S,6S)-4-(dimethylamino)-5-hydroxy-6-methyltetrahydro-2H-pyran-2-yl)oxy)-2-ethyl-2,5,7-trihydroxy-6,11-dioxo-1,2,3,4,6,11-hexahydrotetracene-1-carboxylate (CAS 60504-57-6)
- 2-Amino-2-(pyrimidin-5-yl)acetamide (CAS 146422-53-9)
- rel-Methyl (1R,2S)-2-(hydroxymethyl)cyclopentane-1-carboxylate (CAS 1903577-04-7)
- (Z)-Pent-2-en-1-yl hexanoate (CAS 74298-89-8)
- Neuroendocrine Regulatory Peptide-1 (human) (H-6622.1000) (CAS 954420-50-9)
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