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

Bosentan Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Bosentan 13C2D4 Stable Isotopes CS-T-94196 147536-97-8(Unlabeled) Enquire
Bosentan-13C2 D4 Na salt Stable Isotopes CS-EO-02385 147536-97-8 (Unlabelled) Enquire
Bosentan-13C6 Stable Isotopes CS-O-11952 147536-97-8(Unlabeled) In Stock
Bosentan-d4 Stable Isotopes CS-O-02687 1065472-77-6 In Stock
Desmethyl Bosentan-d4 Stable Isotopes CS-T-99305 Not Available Enquire
Hydroxy Bosentan D4 Stable Isotopes CS-T-55850 1065472-91-4 Enquire
Hydroxy Bosentan-d6 Stable Isotopes CS-O-02698 1246817-57-1 In Stock
Hydroxy Desmethyl Bosentan-d4 Stable Isotopes CS-T-101305 Not Available Enquire


API Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Bosentan API Standards CS-O-11321 147536-97-8 In Stock
Bosentan Hemihydrate API Standards CS-O-06171 Not Available In Stock
Bosentan Hydrate API Standards CS-O-00970 157212-55-0 In Stock
Bosentan Monohydrate API Standards CS-O-06162 157212-55-0 In Stock


Metabolites

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Bosentan Sulfide Metabolites CS-O-07396 Not Available Enquire
Bosentan Sulfoxide Metabolites CS-O-07397 Not Available Enquire
Des-6-(2-hydroxyethoxy)- 6-Chloro-Hydroxy Bosentan Metabolites CS-O-55471 1076198-22-5 Enquire
Hydroxy Bosentan Metabolites CS-O-10316 253688-60-7 In Stock
Hydroxy Desmethyl Bosentan Metabolites CS-O-10023 253688-62-9 In Stock


Impurities

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
4-(Tert-butyl)-N-(6-ethoxy-5-(2-methoxyphenoxy)-[2,2'-bipyri... Impurities CS-O-49005 157415-45-7 In Stock
4-(tert-Butyl)-N,N-bis(6-chloro-5-(2-methoxyphenoxy)-[2,2'-b... Impurities CS-O-59201 Not Available Enquire
Bosentan Impurity 17 Impurities CS-O-58746 1160515-53-6 Enquire
Bosentan Impurity 4 Impurities CS-O-59200 1257099-44-7 Enquire
Bosentan Impurity 5 Impurities CS-O-59460 1355251-10-3 Enquire
Bosentan Impurity 8 Impurities CS-O-59199 157415-46-8 Enquire
Bosentan Impurity A Impurities CS-O-35117 Not Available Enquire
Bosentan Related Compound A cesium salt Impurities CS-O-46809 1218951-79-1 Enquire
Bosentan Related Compound B Impurities CS-O-07400 174227-14-6 In Stock
Bosentan USP Related Compound C Impurities CS-O-07401 1097263-60-9 In Stock
Desmethyl Bosentan Impurities CS-O-07395 253688-61-8 In Stock


Intermediates

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(4,6-Dichloro-5-(2-Methoxyphenoxy)-2,2-Bipyrimidine) Intermediates CS-O-07398 150728-13-5 In Stock
4-(tert-Butyl)benzene-1-sulfonamide Intermediates CS-O-07402 6292-59-7 In Stock
Bosentan Chloro intermediate Intermediates CS-O-07399 150727-06-3 In Stock
Bosentan sodium salt Intermediates CS-CX-00182 150726-52-6 Enquire