Fosaprepitant Impurity 38 CAS 990-91-0
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 990-91-0 |
| Molecular Formula | C28H28O7P2 |
| Molecular Weight | 538.47 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Fosaprepitant Impurity 38 (CAS 990-91-0) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C28H28O7P2. Molecular weight: 538.47 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C28H28O7P2 |
| Molecular Weight | 538.47 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at room temperature, 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) | 15.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
Related Fosaprepitant Standards
- Fosaprepitant Impurity 53 (CAS 1254261-32-9)
- Fosaprepitant Impurity 37 (CAS CATO-C4X-116837)
- Fosaprepitant Impurity 7 (CAS CATO-C4X-11687)
- Fosaprepitant Impurity 43 (CAS CATO-C4X-116843)
- Fosaprepitant Impurity 46 (CAS CATO-C4X-116846)
- Fosaprepitant Impurity 2 (CAS CATO-C4X-11682)
- Fosaprepitant Impurity 5 (CAS CATO-C4X-11685)
- Fosaprepitant Impurity 47 (CAS CATO-C4X-116847)
Recommended Standards
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- Folic Acid NHS Ester (gamma : alpha =2 :1) (CAS 153445-05-7)
- 6-Fluoro-4-(trifluoromethyl)quinoline-2-carboxamide, 97% (CAS 1116339-61-7)
- Benzhexol Impurity 7 (CAS 30953-85-6)
- Ganciclovir Impurity 11 (CAS 86357-19-9)
- Ethyl N-[(2Z)-2-(ethoxymethylidene)-3-oxobutanoyl]carbamate (CAS 17158-06-4)
- tert-Butyl ((2-cyanopyridin-4-yl)methyl)carbamate (CAS 214472-06-7)
- 3-(4-Fluoro-3-methylbenzyl)azetidine (CAS 1248723-52-5)
- rel-(3S,4R)-4-Methoxytetrahydrofuran-3-amine hydrochloride (CAS 1609395-41-6)
- Semaglutide impurity 59 (CAS CATO-C4X-222659)
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