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Clearsynth is a leading innovator in pharmaceutical reference standards, offering high-quality Reference Standards for Nirmatrelvir, including both pharmacopeial and non-pharmacopeial impurities, metabolites, stable isotope products, and nitrosamines (N-NO products). Our Nirmatrelvir impurity reference standards are invaluable for pharmaceutical research, supporting product development, ANDA and DMF submissions, quality control (QC), method validation, and stability studies. They also aid in identifying unknown impurities and assessing genotoxic potential.
Our Nirmatrelvir-related products undergo thorough characterization and are supplied with detailed Certificates of Analysis (COA) and analytical data that meet regulatory requirements. All supplied products are re-tested at regular intervals to ensure ongoing quality and compliance.

Nirmatrelvir Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Nirmatrelvir-D6 Stable Isotopes CS-O-41606 2628280-40-8 (unalebeled) Enquire
Nirmatrelvir-D9 Stable Isotopes CS-O-40889 Not Available Enquire
Nirmatrelvir-d9 Stable Isotopes CS-O-40426 2628280-40-8 (Unlabeled) In Stock


API Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Nirmatrelvir API Standards CS-O-39891 2628280-40-8 In Stock


Metabolites

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Nirmatrelvir M8 Metabolites CS-O-41062 Not Available Enquire
Nirmatrelvir Metabolite (M2) Metabolites CS-O-47344 Not Available Enquire
Nirmatrelvir Metabolite (M3) Metabolites CS-O-47345 Not Available Enquire
Nirmatrelvir Metabolite (M4) Metabolites CS-O-47346 Not Available Enquire


Impurities

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(R)-2-amino-3-((R)-2-oxopyrrolidin-3-yl)propanamide hydrochl... Impurities CS-O-42911 Not Available Enquire
(S)​-​2-​amino-​3-​((S)​-​2-​oxopyrrolidin-​3-​yl)​propanami... Impurities CS-O-44562 2628280-47-5 Enquire
(S)-2-amino-3-((R)-2-oxopyrrolidin-3-yl)propanamide hydrochl... Impurities CS-O-42913 Not Available Enquire
methyl (1S,2R,5R)-6,6-dimethyl-3-azabicyclo[3.1.0]hexane-2-c... Impurities CS-O-48553 943516-62-9 Enquire
Nirmatrelvir Acid impurity Impurities CS-O-41105 Not Available Enquire
Nirmatrelvir Amide Impurities CS-O-40554 2755812-81-6 In Stock
Nirmatrelvir Boc Impurity Impurities CS-O-47508 2755812-78-1 In Stock
Nirmatrelvir Chloro impurity Impurities CS-O-41103 Not Available Enquire
Nirmatrelvir Enantiomer impurity Impurities CS-O-42620 Not Available Enquire
Nirmatrelvir Impurity 10 Impurities CS-O-41065 1027601-37-1 Enquire
Nirmatrelvir Impurity 11 Impurities CS-O-41066 Not Available Enquire
Nirmatrelvir Impurity 12 Impurities CS-O-41067 2755950-35-5 Enquire
Nirmatrelvir Impurity 23 Impurities CS-EO-03729 2920198-06-5 Enquire
Nirmatrelvir Impurity 9 Impurities CS-O-41064 Not Available Enquire
Nirmatrelvir Impurity A Impurities CS-EO-01835 2628280-48-6 Enquire
Nirmatrelvir Impurity C Impurities CS-EO-03211 Not Available In Stock
Nirmatrelvir Isomer 2 Impurities CS-O-42143 Not Available Enquire
Nirmatrelvir Isomer I Impurities CS-O-53212 Not Available Enquire
Nirmatrelvir Isopropyl ester Impurities CS-O-41104 Not Available Enquire
NIRMATRELVIR KSM I IMPURITY A (ACID IMPURITY) Impurities CS-O-48781 394735-37-6 Enquire
NIRMATRELVIR KSM II IMPURITY A Impurities CS-O-48782 1429218-41-6 Enquire
Nirmatrelvir Methyl Ester Impurities CS-O-40555 2879641-46-8 In Stock
Nirmatrelvir R-isomer(CN) Impurities CS-O-41102 2755812-41-8 In Stock