Prasugrel Impurity 21 CAS 204204-73-9
| CAS No. | 204204-73-9 |
| Molecular Formula | C18H20FNO3S |
| Molecular Weight | 349.42 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Prasugrel Impurity 21.
Prasugrel Impurity 21 (CAS 204204-73-9) is a certified pharmaceutical impurity reference standard with the molecular formula C18H20FNO3S and a molecular weight of 349.42 g/mol.
Based on its molecular formula C18H20FNO3S, Prasugrel Impurity 21 contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage, fluorine substitution; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 349.42 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C18H20FNO3S |
| Molecular Weight | 349.42 g/mol |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2015 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 1 |
| Sulfur Atoms | 1 |
Related Prasugrel Standards
- Prasugrel Impurity 36 (CAS 866761-69-5)
- Prasugrel Impurity 37 (CAS 866761-71-9)
- Prasugrel Impurity 38 (CAS 866761-70-8)
- Prasugrel Impurity 39 (CAS 866761-68-4)
- Prasugrel R-138727 Metabolite (CAS 204204-98-8)
- Prasugrel Impurity N14 (CAS 239466-74-1)
- Prasugrel Impurity 30 (CAS 1443034-67-0)
- Prasugrel EP Impurity F (CAS 947502-66-1)
Recommended Standards
- Vonoprazan Impurity 109 (CAS CATO-C4X-1020109)
- Rosuvastatin Impurity 138 (CAS CATO-C4X-1169138)
- Vonoprazan Impurity 108 (CAS CATO-C4X-1020108)
- Rosuvastatin Impurity 166 (CAS CATO-C4X-1169166)
- Biapenem impurity 3 (CAS CATO-C4X-22733)
- Vonoprazan Impurity N20 (CAS 2416241-98-8)
- Ebastine Impurity 18 (CAS CATO-C4X-202918)
- 1-(2,5-Dichlorophenyl)-N-(3,5-dichlorophenyl)-5-methyl-1H-1,2,4-triazole-3-carboxamide (CAS 338407-91-3)
- 1,2-Bis(4-hydroxyphenyl)ethanone (CAS 3669-47-4)
- 6-Bromo-1H-1,3-benzodiazole-4-carboxylic Acid (CAS 255064-08-5)
- 1,4-Dihydroquinazoline-4-carbonitrile (CAS 5132-43-4)
- 5-Ethoxy-3-(methylthio)pyridin-2-amine (CAS 2794196-94-2)
- (S)-1-(Isoquinolin-5-yl)ethan-1-amine (CAS 1213144-78-5)
- (Tyr9)-Cholecystokinin Octapeptide (sulfated) (H-9770.0005) (CAS 96607-61-3)
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