![4-[(5-Amino-1-methyl-1H-indol-3-yl)methyl]-3-methoxy-N-[(2-methylphenyl)sulfonyl]benzamide chemical structure](/media/structures/HNBZIIQASMYNPG-UHFFFAOYSA-N.svg)
4-[(5-Amino-1-methyl-1H-indol-3-yl)methyl]-3-methoxy-N-[(2-methylphenyl)sulfonyl]benzamide
- CAS
- 219583-10-5
- Formula
- C25H25N3O4S
- MW
- 463.6 g/mol
VQ-034723
Impurity reference standards
Zafirlukast impurities & reference standards
Characterised Zafirlukast impurities, degradation products and related compounds for analytical method development, validation, QC release and regulatory filings.
27reference materials
COAHPLC · NMR · MS on request
![4-[[5-[[(Cyclopentyloxy)carbonyl]amino]-1-methyl-1H-indol-3-yl]methyl]-3-methoxy-benzoic acid methyl ester chemical structure](/media/structures/QVOFWGVAMUSZGP-UHFFFAOYSA-N.svg)
4-[[5-[[(Cyclopentyloxy)carbonyl]amino]-1-methyl-1H-indol-3-yl]methyl]-3-methoxy-benzoic acid methyl ester
- CAS
- 107754-19-8
- Formula
- C25H28N2O5
- MW
- 436.5 g/mol
VQ-028769
![4-[[5-[[(Cyclopentyloxy)carbonyl]amino]-1-methyl-1H-indol-3-yl]methyl]-3-methoxybenzoic acid chemical structure](/media/structures/KFQBKNCZRCRBOU-UHFFFAOYSA-N.svg)
4-[[5-[[(Cyclopentyloxy)carbonyl]amino]-1-methyl-1H-indol-3-yl]methyl]-3-methoxybenzoic acid
- CAS
- 107754-20-1
- Formula
- C24H26N2O5
- MW
- 422.5 g/mol
VQ-034719
![Methyl 4-[(5-Amino-1-methylindol-3-yl)methyl]-3-methoxybenzoate chemical structure](/media/structures/WEMIOTLFXSHMSS-UHFFFAOYSA-N.svg)
Methyl 4-[(5-Amino-1-methylindol-3-yl)methyl]-3-methoxybenzoate
- CAS
- 107754-14-3
- Formula
- C19H20N2O3
- MW
- 324.4 g/mol
VQ-034722
FAQs — Zafirlukast impurities
Which Zafirlukast impurities do you supply?
We list 27 Zafirlukast-related reference materials, including process impurities, degradation products and related compounds. Each is supplied with a COA, and characterisation data (HPLC, 1H-NMR, MS, IR) can be provided on request.
What are Zafirlukast impurity standards used for?
They are used for analytical method development and validation, impurity identification and quantification, forced-degradation and stability studies, and to support ANDA, DMF and other regulatory submissions under ICH Q3A/Q3B (and ICH M7 for mutagenic impurities).
Can you synthesise a Zafirlukast impurity that is not listed?
Yes. Our custom synthesis service can prepare and characterise unlisted impurities, metabolites and labelled analogues from milligram to gram scale. Share the structure or name and required quantity for a quotation.
Request Zafirlukast impurity standards
We reply within one business day with price, pack options, lead time and documentation.