Tacrolimus 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.
Desmethyl Tacrolimus
CAT No: VS-T001015
CAS No: 132172-14-6
Mol.F.: C43H67NO12
Mol.Wt.: 790
Status: Custom Synthesis
Tacrolimus 20-ethoxy Acetal
CAT No: VS-T001043
CAS No: N/A
Mol.F.: C46H75NO13
Mol.Wt.: 850.1
Status: Custom Synthesis
Tacrolimus 21-Carboxylic acid Impurity
CAT No: VS-T001016
CAS No: N/A
Mol.F.: C44H71NO13
Mol.Wt.: 822.1
Status: Custom Synthesis
Tacrolimus Dehydro Impurity
CAT No: VS-T001018
CAS No: 129212-37-9
Mol.F.: C44H67NO11
Mol.Wt.: 786
Status: Custom Synthesis
Tacrolimus Delta Lactone
CAT No: VS-T001020
CAS No: 1026775-21-2
Mol.F.: C44H69NO12
Mol.Wt.: 804
Status: Custom Synthesis
Tacrolimus EP Impurity A
CAT No: VS-T001002
CAS No: 104987-12-4
Mol.F.: C43H69NO12
Mol.Wt.: 792
Status: Custom Synthesis
Tacrolimus EP Impurity B
CAT No: VS-T001003
CAS No: N/A
Mol.F.: C43H69NO12
Mol.Wt.: 792
Status: Custom Synthesis
Tacrolimus EP Impurity C
CAT No: VS-T001004
CAS No: N/A
Mol.F.: C43H67NO12
Mol.Wt.: 790
Status: Custom Synthesis
Tacrolimus EP Impurity D
CAT No: VS-T001005
CAS No: 129212-35-7
Mol.F.: C44H69NO12
Mol.Wt.: 804
Status: Custom Synthesis
Tacrolimus EP Impurity E
CAT No: VS-T001006
CAS No: 104987-30-6
Mol.F.: C44H71NO12
Mol.Wt.: 806.1
Status: Custom Synthesis
Tacrolimus EP Impurity F
CAT No: VS-T001007
CAS No: N/A
Mol.F.: C44H69NO12
Mol.Wt.: 804.02
Status: Custom Synthesis
Tacrolimus EP Impurity G
CAT No: VS-T001008
CAS No: 144490-63-1
Mol.F.: C44H69NO12
Mol.Wt.: 804
Status: Custom Synthesis
Tacrolimus EP Impurity H
CAT No: VS-T001009
CAS No: 143210-33-7
Mol.F.: C43H69NO11
Mol.Wt.: 776
Status: Custom Synthesis
Tacrolimus EP Impurity I
CAT No: VS-T001010
CAS No: 104987-16-8
Mol.F.: C44H67NO11
Mol.Wt.: 786
Status: Custom Synthesis
Tacrolimus Hydrate
CAT No: VS-T001001
CAS No: 109581-93-3
Mol.F.: C44H69NO12 : H2O
Mol.Wt.: 804.0 : 18.0
Status: Custom Synthesis
Tacrolimus Hydroxy Acid Impurity
CAT No: VS-T001013
CAS No: 1700657-83-5
Mol.F.: C44H71NO13
Mol.Wt.: 822
Status: Custom Synthesis
Tacrolimus Impurity 1
CAT No: VS-T001035
CAS No: 123719-19-7
Mol.F.: C43H69NO11
Mol.Wt.: 776
Status: Custom Synthesis
Tacrolimus Impurity 3
CAT No: VS-T001037
CAS No: N/A
Mol.F.: C44H69NO12
Mol.Wt.: 804
Status: Custom Synthesis
Tacrolimus Impurity 4
CAT No: VS-T001038
CAS No: N/A
Mol.F.: C43H65NO12
Mol.Wt.: 788
Status: Custom Synthesis
Tacrolimus Impurity 5
CAT No: VS-T001039
CAS No: N/A
Mol.F.: C44H71NO13
Mol.Wt.: 822
Status: Custom Synthesis
Tacrolimus Impurity 6
CAT No: VS-T001040
CAS No: N/A
Mol.F.: C44H69NO12
Mol.Wt.: 804
Status: Custom Synthesis
Tacrolimus Impurity 7
CAT No: VS-T001041
CAS No: N/A
Mol.F.: C44H69NO12
Mol.Wt.: 804
Status: Custom Synthesis
Tacrolimus Impurity 8
CAT No: VS-T001042
CAS No: N/A
Mol.F.: C46H75NO14
Mol.Wt.: 866.1
Status: Custom Synthesis
Tacrolimus Impurity I
CAT No: VS-T001021
CAS No: 135821-69-1
Mol.F.: C44H71NO12
Mol.Wt.: 806
Status: Custom Synthesis
Tacrolimus Impurity III
CAT No: VS-T001022
CAS No: 135635-47-1
Mol.F.: C43H67NO12
Mol.Wt.: 790
Status: Custom Synthesis
Tacrolimus Impurity IV
CAT No: VS-T001023
CAS No: 129039-81-2
Mol.F.: C43H65NO12
Mol.Wt.: 788
Status: Custom Synthesis
Tacrolimus Impurity IX
CAT No: VS-T001026
CAS No: 135635-50-6
Mol.F.: C44H67NO11
Mol.Wt.: 786
Status: Custom Synthesis
Tacrolimus Impurity VI
CAT No: VS-T001031
CAS No: N/A
Mol.F.: C42H69NO12
Mol.Wt.: 780
Status: Custom Synthesis
Tacrolimus Impurity VII
CAT No: VS-T001033
CAS No: N/A
Mol.F.: C44H69NO12
Mol.Wt.: 804
Status: Custom Synthesis
Tacrolimus Impurity VII
CAT No: VS-T001029
CAS No: 144432-22-4
Mol.F.: C44H69NO12
Mol.Wt.: 804
Status: Custom Synthesis
Tacrolimus Impurity VII
CAT No: VS-T001024
CAS No: N/A
Mol.F.: C44H69NO12
Mol.Wt.: 804
Status: Custom Synthesis
Tacrolimus Impurity X
CAT No: VS-T001027
CAS No: 127285-26-1
Mol.F.: C11H18O3
Mol.Wt.: 198.3
Status: Custom Synthesis
Tacrolimus Impurity XVI
CAT No: VS-T001030
CAS No: N/A
Mol.F.: C44H71NO13
Mol.Wt.: 822
Status: Custom Synthesis
Tacrolimus Methyl Acryl Aldehyde Impurity
CAT No: VS-T001019
CAS No: 109466-74-2
Mol.F.: C11H18O3
Mol.Wt.: 198.3
Status: Custom Synthesis
Tacrolimus Methylene Analog
CAT No: VS-T001044
CAS No: N/A
Mol.F.: C45H71NO12
Mol.Wt.: 818.06
Status: Custom Synthesis
Tacrolimus O-ethyl Open Ring
CAT No: VS-T001045
CAS No: N/A
Mol.F.: C46H75NO13
Mol.Wt.: 850.1
Status: Custom Synthesis
Tacrolimus open ring Impurity
CAT No: VS-T001017
CAS No: 144432-23-5
Mol.F.: C44H71NO13
Mol.Wt.: 822
Status: Custom Synthesis
Tacrolimus Regioisomer
CAT No: VS-T001012
CAS No: 131944-48-4
Mol.F.: C44H69NO12
Mol.Wt.: 804
Status: Custom Synthesis
Tacrolimus Ring-opening Impurity
CAT No: VS-T001014
CAS No: 1393890-33-9
Mol.F.: C44H69NO12
Mol.Wt.: 804
Status: Custom Synthesis
Tacrolimus USP Related Compound A
CAT No: VS-T001011
CAS No: 135635-46-0
Mol.F.: C43H69NO12
Mol.Wt.: 792
Status: Custom Synthesis
