Darifenacin Related Products 
Venkatasai is a leading innovator in the field of pharmaceutical reference standards, offering high-quality Reference Standards of Abacavir, including both pharmacopeial and non-pharmacopeial impurities, metabolites, stable isotope-labeled compounds, and nitrosamines (N-NO products). Our Abacavir impurity reference standards play a vital role in pharmaceutical research, supporting product development, ANDA and DMF filings, quality control (QC), method validation, and stability studies. They are also instrumental in identifying unknown impurities and evaluating genotoxic potential. All Abacavir-related products are thoroughly characterized and supplied with comprehensive Certificates of Analysis (COA) and analytical data that comply with regulatory standards. EP/USP traceable standards can also be provided upon request. Furthermore, all supplied products undergo periodic re-testing to ensure continued quality and reliability.
(R)-Darifenacin Hydrobromide
CAT No: VS-D012058
CAS No: 1092800-15-1
Mol.F.: C28H31BrN2O2
Mol.Wt.: 507.47
Status: Custom Synthesis
1-Tosyl-(3S)-hydroxy pyrrolidine
CAT No: VS-D012030
CAS No: 133034-00-1
Mol.F.: C11H15NO3S
Mol.Wt.: 241.3
Status: Custom Synthesis
1-Tosyl-(3S)-tosyloxy pyrrolidine
CAT No: VS-D012031
CAS No: 133034-02-3
Mol.F.: C18H21NO5S2
Mol.Wt.: 395.5
Status: Custom Synthesis
2,3-Dihydro-5-vinylbenzofuran
CAT No: VS-D012036
CAS No: 633335-97-4
Mol.F.: C10H10O
Mol.Wt.: 146.2
Status: Custom Synthesis
Bromo Darifenacin impurity
CAT No: VS-D012041
CAS No: N/A
Mol.F.: C28H29BrN2O2
Mol.Wt.: 505.5
Status: Custom Synthesis
Darifenacin
CAT No: VS-D012000
CAS No: 133099-04-4
Mol.F.: C28H30N2O2
Mol.Wt.: 426.6
Status: Custom Synthesis
Darifenacin 2,3-Dehydro Bromo Impurity
CAT No: VS-D012014
CAS No: 133034-06-7
Mol.F.: C10H9BrO
Mol.Wt.: 225.1
Status: Custom Synthesis
Darifenacin 3-Hydroxy Impurity
CAT No: VS-D012007
CAS No: 206048-82-0
Mol.F.: C28H30N2O3
Mol.Wt.: 442.6
Status: Custom Synthesis
Darifenacin 4-Hydroxy Impurity
CAT No: VS-D012015
CAS No: 2468796-89-4
Mol.F.: C28H31BrN2O2
Mol.Wt.: 507.5
Status: Custom Synthesis
Darifenacin 5-Carboxymethyl Impurity
CAT No: VS-D012003
CAS No: 69999-16-2
Mol.F.: C10H10O3
Mol.Wt.: 178.2
Status: Custom Synthesis
Darifenacin 7-Bromo Analog
CAT No: VS-D012016
CAS No: 1391080-43-5
Mol.F.: C28H29BrN2O2
Mol.Wt.: 505.5
Status: Custom Synthesis
Darifenacin 7-Bromoethyl Impurity
CAT No: VS-D012017
CAS No: 1598271-92-1
Mol.F.: C10H11BrO
Mol.Wt.: 227.1
Status: Custom Synthesis
Darifenacin Amide Impurity
CAT No: VS-D012037
CAS No: 134002-25-8
Mol.F.: C18H20N2O
Mol.Wt.: 280.4
Status: Custom Synthesis
Darifenacin Bromo Impurity
CAT No: VS-D012006
CAS No: 127264-14-6
Mol.F.: C10H11BrO
Mol.Wt.: 227.1
Status: Custom Synthesis
Darifenacin Carboxylic Acid Impurity
CAT No: VS-D012018
CAS No: 1048979-16-3
Mol.F.: C28H29NO3 : HBr
Mol.Wt.: 427.5 : 80.9
Status: Custom Synthesis
Darifenacin Cyano Pyrrolidine Impurity
CAT No: VS-D012004
CAS No: 871505-23-6
Mol.F.: C18H18N2 . HCl
Mol.Wt.: 262.4 : 36.5
Status: Custom Synthesis
Darifenacin Cyano t-BOC Impurity
CAT No: VS-D012013
CAS No: 1159977-31-7
Mol.F.: C23H26N2O2
Mol.Wt.: 362.5
Status: Custom Synthesis
Darifenacin DBE Isomer
CAT No: VS-D012005
CAS No: N/A
Mol.F.: C28H30N2O2
Mol.Wt.: 426.6
Status: Custom Synthesis
Darifenacin Dimer-1 Impurity
CAT No: VS-D012009
CAS No: N/A
Mol.F.: C38H40N2O3
Mol.Wt.: 572.7
Status: Custom Synthesis
Darifenacin Dimer-2 Impurity
CAT No: VS-D012010
CAS No: 2280857-32-9
Mol.F.: C38H40N2O3
Mol.Wt.: 572.7
Status: Custom Synthesis
Darifenacin EP Impurity H
CAT No: VS-D012038
CAS No: N/A
Mol.F.: C46H46N4O4
Mol.Wt.: 718.9
Status: Custom Synthesis
Darifenacin Hydrobromide
CAT No: VS-D012008
CAS No: 133099-07-7
Mol.F.: C28H30N2O2 : HBr
Mol.Wt.: 426.6 : 80.9
Status: Custom Synthesis
Darifenacin Hydrochloride
CAT No: VS-D012055
CAS No: 586346-94-3
Mol.F.: C28H30N2O2 : HCl
Mol.Wt.: 426.6 : 36.5
Status: Custom Synthesis
Darifenacin Impurity (UK-156961)
CAT No: VS-D012023
CAS No: 206048-83-1
Mol.F.: C28H32N2O3
Mol.Wt.: 444.6
Status: Custom Synthesis
Darifenacin Impurity 1
CAT No: VS-D012042
CAS No: 133099-09-9
Mol.F.: C25H24N2O2S
Mol.Wt.: 416.6
Status: Custom Synthesis
Darifenacin Impurity 10
CAT No: VS-D012050
CAS No: 1092540-94-7
Mol.F.: C18H20N2O : C4H6O6
Mol.Wt.: 280.4 : 150.1
Status: Custom Synthesis
Darifenacin Impurity 11
CAT No: VS-D012051
CAS No: 1048979-15-2
Mol.F.: C27H29NO
Mol.Wt.: 383.5
Status: Custom Synthesis
Darifenacin Impurity 12
CAT No: VS-D012052
CAS No: N/A
Mol.F.: C27H29NO
Mol.Wt.: 383.5
Status: Custom Synthesis
Darifenacin Impurity 13
CAT No: VS-D012053
CAS No: 194602-27-2
Mol.F.: C18H19BrN2
Mol.Wt.: 343.27
Status: Custom Synthesis
Darifenacin Impurity 2
CAT No: VS-D012043
CAS No: 133099-10-2
Mol.F.: C25H24N2O2S
Mol.Wt.: 416.6
Status: Custom Synthesis
Darifenacin Impurity 3
CAT No: VS-D012044
CAS No: 86-29-3
Mol.F.: C14H11N
Mol.Wt.: 193.3
Status: Custom Synthesis
Darifenacin Impurity 5
CAT No: VS-D012045
CAS No: N/A
Mol.F.: C20H22O6S2
Mol.Wt.: 422.5
Status: Custom Synthesis
Darifenacin Impurity 6
CAT No: VS-D012046
CAS No: 133034-07-8
Mol.F.: C28H28N2O3
Mol.Wt.: 440.6
Status: Custom Synthesis
Darifenacin Impurity 7
CAT No: VS-D012047
CAS No: N/A
Mol.F.: C19H22N2O
Mol.Wt.: 294.4
Status: Custom Synthesis
Darifenacin Impurity 8
CAT No: VS-D012048
CAS No: 87776-76-9
Mol.F.: C10H12O2
Mol.Wt.: 164.2
Status: Custom Synthesis
Darifenacin Impurity 9
CAT No: VS-D012049
CAS No: 142935-60-2
Mol.F.: C10H8O3
Mol.Wt.: 176.2
Status: Custom Synthesis
Darifenacin Impurity B
CAT No: VS-D012025
CAS No: 136081-60-2
Mol.F.: C11H14O4S
Mol.Wt.: 242.3
Status: Custom Synthesis
Darifenacin Impurity D
CAT No: VS-D012026
CAS No: N/A
Mol.F.: C28H28N2O2
Mol.Wt.: 424.5
Status: Custom Synthesis
Darifenacin Impurity E
CAT No: VS-D012027
CAS No: 1797983-04-0
Mol.F.: C38H40N2O3
Mol.Wt.: 572.8
Status: Custom Synthesis
Darifenacin Impurity H
CAT No: VS-D012028
CAS No: N/A
Mol.F.: C47H50N4O3
Mol.Wt.: 719
Status: Custom Synthesis
Darifenacin Impurity-A
CAT No: VS-D012056
CAS No: N/A
Mol.F.: C22H26N2O7
Mol.Wt.: 430.46
Status: Custom Synthesis
Darifenacin Impurity-B
CAT No: VS-D012057
CAS No: 127264-14-6
Mol.F.: C10H11BrO
Mol.Wt.: 227.1
Status: Custom Synthesis
Darifenacin KSM-I A
CAT No: VS-D012033
CAS No: 90843-31-5
Mol.F.: C10H10O2
Mol.Wt.: 162.2
Status: Custom Synthesis
Darifenacin KSM-II B precursor
CAT No: VS-D012035
CAS No: 133034-01-2
Mol.F.: C18H21NO5S2
Mol.Wt.: 395.5
Status: Custom Synthesis
Darifenacin KSM-II C precursor
CAT No: VS-D012034
CAS No: 943587-25-5
Mol.F.: C11H15NO3S
Mol.Wt.: 241.3
Status: Custom Synthesis
Darifenacin KSM-II E
CAT No: VS-D012039
CAS No: 1207849-19-1
Mol.F.: C18H18N2 : C2H2O4
Mol.Wt.: 262.4 : 90.0
Status: Custom Synthesis
Darifenacin Morpholine Amide Impurity
CAT No: VS-D012032
CAS No: 97483-11-9
Mol.F.: C14H17NO2S
Mol.Wt.: 263.4
Status: Custom Synthesis
Darifenacin Nitrile Impurity
CAT No: VS-D012011
CAS No: N/A
Mol.F.: C28H28N2O : HCl
Mol.Wt.: 408.5 : 36.5
Status: Custom Synthesis
Darifenacin Nitrile Impurity
CAT No: VS-D012054
CAS No: 252317-48-9
Mol.F.: C28H28N2O
Mol.Wt.: 408.53
Status: Custom Synthesis
Darifenacin N-Oxide Impurity
CAT No: VS-D012019
CAS No: 1391080-40-2
Mol.F.: C28H30N2O3
Mol.Wt.: 442.6
Status: Custom Synthesis
Darifenacin Oxidized Impurity
CAT No: VS-D012024
CAS No: 133033-99-5
Mol.F.: C28H28N2O2
Mol.Wt.: 424.5
Status: Custom Synthesis
Darifenacin Pyrrolidin Carboxylic Acid Impurity
CAT No: VS-D012020
CAS No: 1050646-75-7
Mol.F.: C18H19NO2
Mol.Wt.: 281.4
Status: Custom Synthesis
Darifenacin Pyrrolidine Impurity (S)-Isomer
CAT No: VS-D012002
CAS No: 134002-26-9
Mol.F.: C18H20N2O : C4H6O6
Mol.Wt.: 280.4 : 150.1
Status: Custom Synthesis
Darifenacin Pyrrolidine Impurity Racemate
CAT No: VS-D012012
CAS No: 103887-32-7
Mol.F.: C18H20N2O
Mol.Wt.: 280.4
Status: Custom Synthesis
Darifenacin Pyrrolidinium Dimer Impurity
CAT No: VS-D012021
CAS No: 1396968-57-2
Mol.F.: C38H41N2O3 : Br
Mol.Wt.: 573.8 : 79.9
Status: Custom Synthesis
Darifenacin Recemic Mixture
CAT No: VS-D012040
CAS No: 133033-93-9
Mol.F.: C28H30N2O2
Mol.Wt.: 426.6
Status: Custom Synthesis
Darifenacin R-Isomer
CAT No: VS-D012001
CAS No: N/A
Mol.F.: C28H30N2O2 : HCl
Mol.Wt.: 426.6 : 36.5
Status: Custom Synthesis
Darifenacin Vinyl Impurity (UK-201705)
CAT No: VS-D012029
CAS No: 1048979-09-4
Mol.F.: C28H30N2O2
Mol.Wt.: 426.6
Status: Custom Synthesis
Darifenacin Vinylbenzofuran Impurity
CAT No: VS-D012022
CAS No: 633335-98-5
Mol.F.: C10H8O
Mol.Wt.: 144.2
Status: Custom Synthesis
