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

Fesoterodine Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(S)-Fesoterodine-d7 Fumarate Stable Isotopes CS-T-100308 Not Available Enquire
Fesoterodine-d7 Stable Isotopes CS-T-95471 1126611-84-4 Enquire
Fesoterodine-d7 Fumarate Stable Isotopes CS-O-06620 2747918-94-9 In Stock
rac-Fesoterodine-d14 Hydrochloride Stable Isotopes CS-SN-00036 Not Available Enquire
rac-Fesoterodine-D7 Hydrochloride Stable Isotopes CS-SN-00037 250214-44-9(non-labelled,freebase) Enquire
Fesoterodine D14 Stable Isotopes CS-O-14391 1126611-88-8 Enquire
Fesoterodine D14 Tartrate Stable Isotopes CS-O-03215 1206873-19-9 Enquire
Fesoterodine-d14 Fumarate Stable Isotopes CS-SN-00038 Not Available Enquire
rac Fesoterodine D14 Fumarate Stable Isotopes CS-O-02757 1185237-08-4 Enquire


API

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Fesoterodine API CS-EO-03560 286930-02-7 Enquire
Fesoterodine Fumarate API CS-O-30922 286930-03-8 In Stock
rac Fesoterodine API CS-T-94231 250214-44-9 Enquire


Impurity

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Fesoterodine Acid Impurity HCl Salt Impurity CS-EO-03564 380636-47-5 Enquire
Fesoterodine Aldehyde of Diol Fumarate Impurity CS-EO-03559 214601-12-4 (Freebase) Enquire
Fesoterodine Diol Dimer fumarate Impurity CS-O-48706 "1428856-45-4 (Freebase)" Enquire
Fesoterodine Diol Dimer Monoester Impurity CS-T-93354 1428856-46-5 Enquire
Fesoterodine Fumarate impurity B (Diester impurity) Impurity CS-O-35019 1428856-48-7 Enquire
FESOTERODINE FUMARATE IMPURITY G Impurity CS-O-49736 1428856-53-4 Enquire
Fesoterodine Impurity Impurity CS-T-28298 1292905-33-9 In Stock
Fesoterodine Impurity 15(S)-2-acetoxy-2-phenylacetate salt Impurity CS-EO-03566 260389-90-0 (Freebase) Enquire
Fesoterodine Impurity 2 2,3-dihydroxysuccinate salt Impurity CS-EO-03563 124937-51-5 (Freebase) Enquire
Fesoterodine Impurity A Hydrochloride Impurity CS-EO-03558 250214-40-5 Enquire
Fesoterodine Impurity C HCl salt Impurity CS-EO-03562 895137-81-2 (Freebase) Enquire
Fesoterodine Impurity E Impurity CS-EO-01752 1333234-71-1 Enquire
Fesoterodine N-Oxide Impurity CS-O-56910 ---- Enquire
Fesoterodine Phenol Aldehyde Fumarate salt Impurity CS-O-49321 214601-12-4 (Freebase) Enquire
Fesoterodine Related Impurity 3 Fumarate Impurity CS-EO-03561 1435768-96-9 (Freebase) Enquire
Fesoterodine-O-Benzyl Acid Impurity Impurity CS-EO-03565 156755-33-8 Enquire
(2E)-2-Butenedioic Acid 1-[[3-[(1R)-3-[Bis(1-methylethyl)ami... Impurity CS-T-50126 1254942-29-4 Enquire
(R)-5-Hydroxymethyl Tolterodine Methacrylate Impurity CS-T-78847 1390644-37-7 Enquire
(R)-5-Isopropylcarbonyloxymethyl Tolterodine Impurity CS-T-29885 1380491-70-2 Enquire
(R,E)-4-((3-(3-(Diisopropylamino)-1-phenylpropyl)-4-hydroxyb... Impurity CS-T-19398 1428856-47-6 Enquire
(S)-Fesoterodine Fumarate Impurity CS-T-54697 1431511-18-0 Enquire
(S)-Fesoterodine Fumarate Impurity CS-EO-00356 1431511-18-0(Free base) Enquire
Desfesoterodine Fumarate Impurity CS-O-10574 380636-50-0 Enquire
Fesoterodine Diol Dimer Impurity CS-T-60099 1428856-45-4 Enquire
Fesoterodine Fumarate impurity F (Aldehyde impurity) Impurity CS-EO-00355 1435768-96-9 (Free Base) Enquire
Fesoterodine Fumarate impurity G (fumaric acid ester impurit... Impurity CS-O-35021 1254942-29-4(Free base) Enquire
Fesoterodine Fumarate impurity I (Tolerodine ester impurity) Impurity CS-O-35022 Not Available Enquire
FESOTERODINE FUMARATE IMPURITY Y Impurity CS-O-35399 Not Available Enquire
Fesoterodine Impurity D Impurity CS-EO-00343 1262778-55-1 Enquire
Fesoterodine Impurity K Impurity CS-EO-00687 Not Available Enquire
Fesoterodine Impurity L Impurity CS-EO-00688 Not Available Enquire
Fesoterodine Impurity O Hydrochloride Impurity CS-P-08001 250214-69-8 (freebase) Enquire
Fesoterodine Isobutyrate Benzaldehyde Impurity Impurity CS-O-14679 1435768-96-9 Enquire
Fesoterodine Phenol Aldehyde Impurity Impurity CS-T-49374 214601-12-4 Enquire
Fesoterodine Propionate impurity Impurity CS-EO-01000 1208313-16-9 Enquire
Fesoterodine Related Impurity 3 Impurity CS-EO-00430 1435768-96-9 (Free Base) Enquire
Fesoterodine Related Impurity 8 (Fesoterodine Impurity P) Impurity CS-P-08000 1380491-71-3 Enquire
O-Isobutyryl (R)-Fesoterodine Impurity CS-T-56788 1208313-13-6 Enquire
rac Fesoterodine Fumarate Impurity CS-T-23606 1333234-73-3 Enquire
Tolterodine Acid Impurity CS-O-08319 194482-44-5 Enquire


Intermediate

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
O-Des(2-Methylpropan-1-one)-O-Benzyl-Fesoterodine Intermediate CS-T-16404 156755-37-2 In Stock


Fine Chemicals

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Fesoterodine Fine Chemicals CS-T-19200 84184-18-9 Enquire
N-Desisopropyl desfesoterodine Fine Chemicals CS-ED-01425 194482-42-3 Enquire


Nitrosamine

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Fesoterodine Nitrosoimpurity Nitrosamine CS-O-42095 Not Available Enquire
FESOTERODINE NITROSO IMPURITY-1 Nitrosamine CS-O-42103 Not Available Enquire
FESOTERODINE NITROSO IMPURITY-2 Nitrosamine CS-O-42104 Not Available Enquire
FESOTERODINE NITROSO IMPURITY-3 Nitrosamine CS-O-42105 Not Available Enquire
FESOTERODINE NITROSO IMPURITY-4 Nitrosamine CS-O-42106 Not Available Enquire