Estradiol Valerate EP Impurity D CAS 1359847-37-2
| CAS No. | 1359847-37-2 |
| Molecular Formula | C24H34O3 |
| Molecular Weight | 370.52 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Estradiol Valerate EP Impurity D (CAS 1359847-37-2) is a certified pharmaceutical impurity reference standard with the molecular formula C24H34O3 and a molecular weight of 370.52 g/mol.
Based on its molecular formula C24H34O3, Estradiol Valerate EP Impurity D contains a steroid core, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 370.52 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 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.
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 | C24H34O3 |
| Molecular Weight | 370.52 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
Related Estradiol Standards
- Estradiol Impurity 10 (CAS 71764-18-6)
- Estradiol Valerate EP Impurity J (CAS CATO-C4X-28428)
- 6-Oxo-Estradiol-17-Valerate (CAS 1313382-51-2)
- Estradiol Valerate impurity 21 (CAS 1313382-32-9)
- Estradiol Valerate EP Impurity (CAS 1313382-26-1)
- Estradiol Benzoate EP Impurity G (CAS 2393-53-5)
- Estradiol Benzoate EP Impurity F (CAS 95870-51-2)
- Estradiol Impurity 33 (CAS CATO-C4X-163633)
Recommended Standards
- Bempedoic Acid Impurity 21 (CAS CATO-C4X-218921)
- Drospirenone-20,20,21,21-d4 (CAS 2376035-94-6)
- 6-Methyl-16-dehydropregnenolone Acetate (CAS 20867-46-3)
- Rimexolone (CAS 49697-38-3)
- Riociguat Impurity 21 (CAS CATO-C4X-174921)
- Dronedarone Impurity 67 (CAS CATO-C4X-109267)
- Cefoxitin Impurity 43 (CAS 40514-91-8)
- 4-((5-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-3-yl)methyl)morpholine hydrochloride (CAS 2377610-96-1)
- 5-(3-Methoxyphenyl)-2H-pyrazol-3-ylamine (CAS 96799-04-1)
- 2-(4-Hydroxypiperidin-1-yl)pyrimidine-4-carboxylic acid (CAS 1365957-58-9)
- 3,5-Dichloro-2-methylpyridin-4-ol (CAS 1823944-64-4)
- Linaclotide impurity 33 (CAS CATO-C4X-210633)
- 2-Fluoro-1-isopropoxy-3-methylbenzene (CAS 1369884-30-9)
- Semaglutide impurity 206 (CAS CATO-C4X-2226206)
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