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Clearsynth is a leading innovator in pharmaceutical reference standards, offering high-quality Reference Standards for Sofosbuvir, including both pharmacopeial and non-pharmacopeial impurities, metabolites, stable isotope products, and nitrosamines (N-NO products). Our Sofosbuvir 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 Sofosbuvir-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.

Sofosbuvir Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
2’-Defluro-2’-hydroxy 2’-epi-Sofosbuvir-13Cd3 Stable Isotopes CS-T-96982 Not Available Enquire
Sofosbuvir 13CD3 Stable Isotopes CS-O-30474 2070009-25-3 Enquire
Sofosbuvir Met. D-13C-15N2 Stable Isotopes CS-BU-00073 863329-66-2 (Unlabeled) Enquire
Sofosbuvir Metabolite GS-331007-13C Stable Isotopes CS-O-30476 1256490-42-2 In Stock
Sofosbuvir Metabolite GS-566500-13C,d3 Stable Isotopes CS-O-30478 1256490-46-6 In Stock
Sofosbuvir-d6 Stable Isotopes CS-O-10984 1868135-06-1 In Stock


API Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Sofosbuvir API Standards CS-O-30473 1190307-88-0 In Stock
Sofosbuvir Polymorphic Form 6 API Standards CS-O-11237 Not Available Enquire


Metabolites

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
1-((2S,3R,4R,5R)-3-Fluoro-4-hydroxy-5-(hydroxymethyl)-3-meth... Metabolites CS-O-40210 2041584-99-8 Enquire
Sofosbuvir metabolite GS331007 Metabolites CS-O-30475 863329-66-2 In Stock
Sofosbuvir metabolite GS-566500 Metabolites CS-O-30477 1233335-78-8 In Stock


Impurities

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(2S,3R)-Ethyl 3-((R)-2,2-Dimethyl-1,3-Dioxolan-4-yl)-2,3-Dih... Impurities CS-O-15605 93635-76-8 In Stock
(R)-Sofosbuvir Pentafluorophenoxy Analogue Impurities CS-O-11149 1334513-02-8 In Stock
(S)-Sofosbuvir Pentafluorophenoxy Analogue Impurities CS-O-14745 1256490-52-4 Enquire
2(R)-Methyl Sofosbuvir Impurities CS-T-92617 1496552-28-3 Enquire
2-Alkene Sofosbuvir Impurities CS-O-15606 2095551-20-3 Enquire
Chloro (R)-Phosphoryl Sofosbuvir Impurities CS-T-72809 1496552-50-1 Enquire
Chloro Sofosbuvir Desphosphate Impurities CS-O-15621 1496551-72-4 Enquire
Ethyl (4S,5R)-5-[(4R)-2,2-Dimethyl-1,3-Dioxolan-4-yl]-4-Meth... Impurities CS-O-15712 879551-01-6 Enquire
Ethyl sofosbuvir Impurities CS-O-11152 1064684-30-5 In Stock
Isopropyl N-[chloro(phenoxy)phosphoryl]-L-alaninate Impurities CS-O-14004 261909-49-3 In Stock
L-Alanine Isopropyl Ester Hydrochloride Impurities CS-G-00131 62062-65-1 In Stock
O-Desphenyl Sofosbuvir Impurities CS-T-73645 1233335-82-4 Enquire
Pentafluoro Sofosbuvir Impurity Impurities CS-O-40464 1337529-56-2 Enquire
Sofosbuvir 3,5-dibenzoate inmurity Impurities CS-O-32141 874638-80-9 In Stock
Sofosbuvir 3’,5’-Bis-(S)-phosphate Impurities CS-T-84999 1337482-17-3 Enquire
Sofosbuvir Benzoyl Cytidine Impurities CS-O-32142 817204-32-3 Enquire
Sofosbuvir Chloro Analogue Impurities CS-O-11153 1496552-51-2 Enquire
Sofosbuvir D-Alaninate Impurities CS-O-11150 1064684-71-4 In Stock
Sofosbuvir Degradation Impurity 1 Impurities CS-O-14747 1015073-43-4 Enquire
Sofosbuvir Des L-​Alanine Impurities CS-O-43898 1859162-80-3 Enquire
Sofosbuvir Dimer Impurities CS-O-11148 1256490-29-5 In Stock
Sofosbuvir Impurity Impurities CS-O-16052 1351925-15-9 In Stock
Sofosbuvir Impurity 11 Impurities CS-O-47961 1987950-05-9 Enquire
Sofosbuvir impurity 12 Impurities CS-DG-00023 114262-49-6 Enquire
Sofosbuvir impurity 19 Impurities CS-DG-00022 1337482-15-1 Enquire
Sofosbuvir impurity 3 Impurities CS-DG-00027 863329-62-8 Enquire
Sofosbuvir impurity 32 Impurities CS-DG-00021 1157884-58-6 Enquire
Sofosbuvir impurity 43 Impurities CS-DG-00020 1520010-86-9(Freeacid) Enquire
Sofosbuvir impurity 5 Impurities CS-DG-00026 863329-63-9 Enquire
Sofosbuvir impurity 6 Impurities CS-DG-00025 874638-94-5 Enquire
Sofosbuvir impurity 9 Impurities CS-DG-00024 944476-44-2 Enquire
Sofosbuvir Impurity 94 Impurities CS-SN-00164 1064684-44-1 Enquire
Sofosbuvir Impurity D Impurities CS-O-33875 Not Available Enquire
Sofosbuvir intermediate isomer Impurity Impurities CS-O-43897 1946820-96-7 Enquire
sofosbuvir isomer 1 (2R,3R,4R,5S-isomer) Impurities CS-O-59316 Not Available Enquire
sofosbuvir isomer 17 (D-Alanine-2R,3R,4R,5S-isomer) Impurities CS-O-59317 Not Available Enquire
Sofosbuvir L-alanitate (Mixture of Diasteriomers) Impurities CS-O-14752 1190308-01-0 In Stock


Intermediates

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Sofosbuvir O-Desisopropyl O-Methyl Ester Intermediates CS-T-85422 1015255-46-5 Enquire


Fine Chemicals

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
2-Methyl-2-propenoic acid ethyl ester Fine Chemicals CS-O-15603 81997-76-4 In Stock
4-Nitrophenyl phosphorodichloridate Fine Chemicals CS-O-11294 777-52-6 In Stock