Estradiol Impurity 30 CAS 4954-08-9
| CAS No. | 4954-08-9 |
| Molecular Formula | C19H24O2 |
| Molecular Weight | 284.39 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Estradiol Impurity 30 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
CATO supplies Estradiol Impurity 30 (CAS 4954-08-9), a pharmacopoeial impurity reference standard (molecular formula C19H24O2, MW 284.39 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a steroid core, a hydroxyl group, an ether linkage, Estradiol Impurity 30 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 284.39 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
Physical & Chemical Properties
| Molecular Formula | C19H24O2 |
| Molecular Weight | 284.39 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
Related Estradiol Standards
- Estradiol Impurity N1 (CAS 4011-48-7)
- Estradiol Impurity 26 (CAS CATO-C4X-163626)
- Estradiol Impurity 27 (CAS CATO-C4X-163627)
- Estradiol Impurity 44 (CAS CATO-C4X-163644)
- Estradiol Impurity 51 (CAS 165609-57-4)
- Estradiol Impurity 5 (CAS 1476-34-2)
- Estradiol USP Related Compound C (CAS 571-92-6)
- Estradiol Impurity 4 (CAS 566-75-6)
Recommended Standards
- Progesterone Impurity 74 (CAS 96893-14-0)
- Exemestane Impurity 2 (CAS 1035-69-4)
- Progesterone Impurity 73 (CAS 1229-18-1)
- Testosterone EP Impurity G (CAS 897-06-3)
- Febuxostat impound 107 (CAS 2227293-69-6)
- Crisaborole Impurity 11 (CAS 943311-54-4)
- Baclofen Impurity 34 Hydrochloride (CAS 1078-21-3（free base）)
- 8-Bromoisoquinolin-5-ol (CAS 1057962-05-6)
- 3-(4-Chlorobenzyl)-2-methyl-4H-pyran-4-one (CAS 400087-29-8)
- tert-butyl N-(1-hydroxyhex-4-en-2-yl)carbamate (CAS 1798428-10-0)
- Atrasentan Impurity 180 (CAS 1059052-58-2)
- 3,5,7-Trichloro-2H-pyrazolo[4,3-d]pyrimidine (CAS 1823950-59-9)
- Methionine Impurity 1 (CAS 1509-92-8)
- Atrial Natriuretic Polypeptide (4-28), human (CAS 95896-08-5)
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