Methotrexate 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.
2,4-Diaminopteridine
CAT No: VS-M042018
CAS No: 1127-93-1
Mol.F.: C6H6N6
Mol.Wt.: 162.2
Status: Custom Synthesis
6-Methyl-2,4-pteridinediamine
CAT No: VS-M042019
CAS No: 708-74-7
Mol.F.: C7H8N6
Mol.Wt.: 176.2
Status: Custom Synthesis
Methotrexate
CAT No: VS-M042000
CAS No: 59-05-2
Mol.F.: C20H22N8O5
Mol.Wt.: 454.5
Status: Custom Synthesis
Methotrexate 7-Hydroxy Metabolite
CAT No: VS-M042015
CAS No: 5939-37-7
Mol.F.: C20H22N8O6
Mol.Wt.: 470.4
Status: Custom Synthesis
Methotrexate Dimethylamide
CAT No: VS-M042017
CAS No: 71074-44-7
Mol.F.: C22H27N9O4
Mol.Wt.: 481.5
Status: Custom Synthesis
Methotrexate EP Impurity A
CAT No: VS-M042001
CAS No: 945-24-4
Mol.F.: C7H8N6O
Mol.Wt.: 192.1
Status: Custom Synthesis
Methotrexate EP Impurity B
CAT No: VS-M042002
CAS No: 54-62-6
Mol.F.: C19H20N8O5
Mol.Wt.: 440.4
Status: Custom Synthesis
Methotrexate EP Impurity C
CAT No: VS-M042004
CAS No: 2410-93-7
Mol.F.: C20H21N7O6
Mol.Wt.: 455.2
Status: Custom Synthesis
Methotrexate EP Impurity D
CAT No: VS-M042005
CAS No: 5623-18-7
Mol.F.: C15H14N6O3
Mol.Wt.: 326.3
Status: Custom Synthesis
Methotrexate EP Impurity E
CAT No: VS-M042007
CAS No: 19741-14-1
Mol.F.: C15H15N7O2
Mol.Wt.: 325.3
Status: Custom Synthesis
Methotrexate EP Impurity E (HCl Salt)
CAT No: VS-M042028
CAS No: 70844-48-3
Mol.F.: C30H31ClN14O4
Mol.Wt.: 687.12
Status: Custom Synthesis
Methotrexate EP Impurity F
CAT No: VS-M042008
CAS No: 51865-79-3
Mol.F.: C20H22N8O5
Mol.Wt.: 454.4
Status: Custom Synthesis
Methotrexate EP Impurity G
CAT No: VS-M042009
CAS No: N/A
Mol.F.: C28H29N9O6
Mol.Wt.: 587.6
Status: Custom Synthesis
Methotrexate EP Impurity H
CAT No: VS-M042010
CAS No: 67022-39-3
Mol.F.: C21H24N8O5
Mol.Wt.: 468.5
Status: In Stock
Methotrexate EP Impurity I
CAT No: VS-M042011
CAS No: 66147-29-3
Mol.F.: C21H24N8O5
Mol.Wt.: 468.5
Status: In Stock
Methotrexate EP Impurity J
CAT No: VS-M042012
CAS No: 34378-65-9
Mol.F.: C22H28N8O5
Mol.Wt.: 482.5
Status: Custom Synthesis
Methotrexate EP Impurity K
CAT No: VS-M042013
CAS No: 4271-30-1
Mol.F.: C12H14N2O5
Mol.Wt.: 266.3
Status: Custom Synthesis
Methotrexate EP Impurity L
CAT No: VS-M042014
CAS No: 52980-68-4
Mol.F.: C13H16N2O5
Mol.Wt.: 280.3
Status: Custom Synthesis
Methotrexate Hydrate EP Impurity B
CAT No: VS-M042003
CAS No: 1217459-90-9
Mol.F.: C19H20N8O5 : H2O
Mol.Wt.: 440.4 : 18.0
Status: Custom Synthesis
Methotrexate Hydrate EP Impurity D
CAT No: VS-M042006
CAS No: 1189252-22-9
Mol.F.: C14H12N6O3 : H2O
Mol.Wt.: 312.3 : 18.0
Status: Custom Synthesis
Methotrexate Impurity
CAT No: VS-M042016
CAS No: 73978-41-3
Mol.F.: C7H8N6O : HCl
Mol.Wt.: 192.2 : 36.5
Status: Custom Synthesis
Methotrexate Impurity 1
CAT No: VS-M042023
CAS No: 1029980-84-4
Mol.F.: C17H24N2O5
Mol.Wt.: 336.4
Status: Custom Synthesis
Methotrexate Impurity 11
CAT No: VS-M042026
CAS No: 34794-87-1
Mol.F.: C15H14N6O3
Mol.Wt.: 326.3
Status: Custom Synthesis
Methotrexate Impurity 12
CAT No: VS-M042030
CAS No: N/A
Mol.F.: C23H28N8O5
Mol.Wt.: 496.5
Status: Custom Synthesis
Methotrexate Impurity 13
CAT No: VS-M042031
CAS No: N/A
Mol.F.: C23H28N8O5
Mol.Wt.: 496.5
Status: Custom Synthesis
Methotrexate Impurity 2
CAT No: VS-M042024
CAS No: N/A
Mol.F.: C17H24N2O5
Mol.Wt.: 336.4
Status: Custom Synthesis
Methotrexate Impurity 3
CAT No: VS-M042025
CAS No: N/A
Mol.F.: C25H31N3O6
Mol.Wt.: 469.5
Status: Custom Synthesis
Methotrexate Impurity 5
CAT No: VS-M042027
CAS No: 4215-07-0
Mol.F.: C7H8N6
Mol.Wt.: 176.2
Status: Custom Synthesis
N-(4-chlorobenzoyl)-L-glutamic acid
CAT No: VS-M042020
CAS No: 57444-70-9
Mol.F.: C12H12ClNO5
Mol.Wt.: 285.7
Status: Custom Synthesis
N-(4-hydroxybenzoyl)-L-Glutamic acid
CAT No: VS-M042022
CAS No: 119843-02-6
Mol.F.: C12H13NO6
Mol.Wt.: 267.2
Status: Custom Synthesis
R-Methotrexate
CAT No: VS-M042029
CAS No: N/A
Mol.F.: C20H20N8Na2O5
Mol.Wt.: 498.41
Status: Custom Synthesis
S-methylaminobenzoyl glutamicester
CAT No: VS-M042021
CAS No: 2378-95-2
Mol.F.: C17H24N2O5
Mol.Wt.: 336.4
Status: Custom Synthesis
