Estriol 3-Sulfate CAS 481-95-8
| CAS No. | 481-95-8 |
| Molecular Formula | C18H24O6S |
| Molecular Weight | 368.44 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C18H24O6S, Estriol 3-Sulfate contains a flavonoid 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 368.44 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).
CATO supplies Estriol 3-Sulfate (CAS 481-95-8), a certified reference material (molecular formula C18H24O6S, MW 368.44 g/mol) for analytical method development and quality control.
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), Estriol 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 | C18H24O6S |
| Molecular Weight | 368.44 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Sulfur Atoms | 1 |
Related Estriol Standards
- Estriol Impurity 18 (CAS CATO-C4X-163718)
- Estriol Impurity 19 (CAS CATO-C4X-163719)
- Estriol impurity 23 (CAS 1247-47-8)
- Estriol 16,17-Diacetate (CAS 805-26-5)
- Estriol Impurity 21 (CAS CATO-C4X-163721)
- Estriol Impurity 14 (CAS 1497406-77-5)
- Estriol 3-Benzyl Ether (CAS 18650-87-8)
- Estriol Impurity 20 (CAS CATO-C4X-163720)
Recommended Standards
- (E)-1-(4-(4-fluorophenyl)piperazin-1-yl)-3-(4-propoxyphenyl)prop-2-en-1-one (CAS 329779-73-9)
- N-(4-fluoro-3-methylphenyl)-1-(4-isopropyl-3-methylphenyl)-5-oxopyrrolidine-3-carboxamide (CAS 866153-52-8)
- 6-Fluoro-4,4-dimethyl-2-(3-(pyrrolidin-1-yl)phenyl)-1,2,3,4-tetrahydroquinoline-8-carboxylic acid (CAS 1391610-34-6)
- CAS 287484-42-8 (CAS 287484-42-8)
- Boc-Histidinol(Tos) (CAS 1169760-85-3)
- 5-Ethoxy-2-methylpyridine (CAS 55270-48-9)
- 87994-88-5 (1,2-~13~C_2_)Leucine DTXSID30745770 (CAS 87994-88-5)
- 2-Amino-2-methyl-4-pentene Hydrochloride (CAS 10354-69-5)
- 15054-44-1 ([(4-Nitrophenyl)sulfonyl]amino)acetic acid MFCD00441205 (CAS 15054-44-1)
- (5-(4-Fluoro-2-methylphenyl)furan-2-yl)methanol (CAS 1179717-27-1)
- 8-Amino-5,6,7,8-tetrahydronaphthalen-2-ol (CAS 103791-24-8)
- 2-Bromo-1-(naphthalen-1-yl)ethan-1-ol (CAS 62222-39-3)
- 3-amino-3,4-dihydro-2H-1-Benzopyran-2-one (9CI) (CAS 152580-32-0)
- Semaglutide impurity 196 (CAS CATO-C4X-2226196)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com