Nirmatrelvir Impurity 7 CAS CATO-C4X-28747
| CAS No. | CATO-C4X-28747 |
| Molecular Formula | C25H35F3N6O8S |
| Molecular Weight | 636.64 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 Nirmatrelvir Impurity 7.
CATO supplies Nirmatrelvir Impurity 7 (CAS CATO-C4X-28747), a pharmacopoeial impurity reference standard (molecular formula C25H35F3N6O8S, MW 636.64 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C25H35F3N6O8S, Nirmatrelvir Impurity 7 contains a flavonoid 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 636.64 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
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 | C25H35F3N6O8S |
| Molecular Weight | 636.64 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
| Nitrogen Atoms | 6 |
| Sulfur Atoms | 1 |
Related Nirmatrelvir Standards
- Nirmatrelvir Impurity 3 (CAS CATO-C4X-28743)
- Nirmatrelvir Impurity 4 (CAS CATO-C4X-28744)
- Nirmatrelvir Impurity 6 (CAS CATO-C4X-28746)
- Nirmatrelvir-d9 (CAS CATO-CCAD303858)
- Nirmatrelvir Impurity 5 (CAS CATO-C4X-28745)
- Nirmatrelvir Impurity 8 (CAS 2889532-78-7)
- Nirmatrelvir Impurity 1 HCl (CAS 1932478-97-1 (free base))
- Nirmatrelvir Impurity 2 HCl (CAS 1932411-98-7 (free base))
Recommended Standards
- Allyl 2,3,4,6-tetra-O-benzyl-a-D-glucopyranoside (CAS 6207-45-0)
- 1,4,5,8-Tetraamino-2,6-bis(3-phenoxyphenoxy)anthracene-9,10-dione (CAS 88600-46-8)
- Azilsartan Impurity 102 (CAS 1514933-19-7)
- 1,4,5,8-Tetraamino-2,7-bis(3-phenoxyphenoxy)anthracene-9,10-dione (CAS 88601-46-1)
- Bevantolol Impurity 13 (CAS CATO-C4X-241113)
- Paroxetine Impurity N1 (Mixture of Diastereomers) (CAS 216690-19-6)
- Cloxacillin Impurity 5 (CAS CATO-C4X-15975)
- (S)-Methyl 1-phenyl-5-thioxopyrrolidine-2-carboxylate (CAS 146500-36-9)
- 5-(2,3-Dimethylphenoxy)furan-2-carboxylic acid (CAS 1082195-73-0)
- 6-MEthyl-imidazo[1,2-a]pyridine-3-carbaldehyde hydrochloride (CAS 1951444-59-9)
- 10-[4-(4,4,5,5-Tetramethyl-1,3,2-dioxaborolan-2-yl)benzyl]-10H-phenothiazine (CAS 2096997-15-6)
- Ethyl 2-(4-oxo-4H-chromene-2-carboxamido)thiazole-4-carboxylate (CAS 361478-77-5)
- 2-(4-(3-Formyl-2,5-diphenyl-1h-pyrrol-1-yl)phenoxy)acetic acid (CAS 1266372-35-3)
- D-Gln24-Tirzepatide (CAS CATO-CPTD788910)
Why CATO?
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- 130,000+ catalog items in stock, COA supplied with every batch
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- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com