Drug Impurities Reference Standards

Showing 1081–1090 of 1892 results

Montelukast Cis-Isomer
- Product Number MON-08-007
- Parent Drug Montelukast
- CAS Number 774538-96-4
- Category Drug Impurities Reference Standards
Temporarily Out of Stock
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+ Synonyms -USP Cis-Isomer Impurity [1-[[[(1R)-1-[3-[(Z)-2-(7-chloroquinolin-2-yl)ethenyl]phenyl]-3-[2-(2-hydroxypropan-2-yl)phenyl]propyl]sulfanyl] methyl]cyclopropyl]acetic acid
Montelukast EP Impurity H
- Product Number MON-12-002
- Parent Drug Montelukast
- CAS Number 851755-56-1
- Category Drug Impurities Reference Standards
Made to Order - Lead Time: 4 to 6 week(s)
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+ Synonyms -1-[[[(1R)-1[3-[(E)-2-(7-chloroquinolin-2-yl)ethenyl]-3-[2-methoxycarbonyl)phenyl] propyl]sulfanyl]methyl]cyclopropyl]acetic acid
Montelukast EP Impurity I
- Product Number MON-12-003
- Parent Drug Montelukast
- CAS Number 2045402-27-3
- Category Drug Impurities Reference Standards
Made to Order - Lead Time: 2 to 3 week(s)
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+ Synonyms -(2RS)-[1-[[[(1R)-1-[3-[(E)-2-(7-chloroquinolin-2-yl)ethenyl]phenyl]-3-[2-(1-hydroxy-1-methylethyl)phenyl]propyl]sulfanyl] methyl]cyclopropyl](hydroxy)acetic acid α-Hydroxy Montelukast
Montelukast Lactone
- Product Number MON-08-013
- Parent Drug Montelukast
- CAS Number 1100617-38-6
- Category Drug Impurities Reference Standards
In Stock - Ready to Ship
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+ Synonyms -(3S)-3-[3-[(E)-2-(7-chloro-2-quinolinyl)ethenylphenyl]-4,5-dihydro-3H-benzo[c]oxepin-1-one
Montelukast Methyl Ester
- Product Number MON-16-001
- Parent Drug Montelukast
- CAS Number 855473-51-7
- Category Drug Impurities Reference Standards
Pending QC
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+ Synonyms -1-[[[(1R)-1-[3-[(1E)-2-(7-Chloro-2-quinolinyl)ethenyl]phenyl]-3-[2-(1-hydroxy-1-methylethyl)phenyl]propyl]thio]methyl]cyclopropaneacetic Acid Methyl Ester
Montelukast Methylketone
- Product Number MON-08-009
- Parent Drug Montelukast
- CAS Number 937275-23-5
- Category Drug Impurities Reference Standards
Made to Order - Lead Time: 4 to 6 week(s)
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+ Synonyms -USP Methylketone Impurity [1-[[[(1R)-3-(2-acetylphenyl)-1-[3-[(E)-2-(7-chloroquinolin-2-yl)ethenyl]phenyl]propyl]sulfanyl]methyl]cyclopropyl]acetic acid
Montelukast Methylstyrene
- Product Number MON-08-010
- Parent Drug Montelukast
- CAS Number 918972-54-0
- Category Drug Impurities Reference Standards
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+ Synonyms -USP Methylstyrene Impurity [1-[[[(1R)-1-[3-[(E)-2-(7-chloroquinolin-2-yl)ethenyl]phenyl]-3-[2-(prop-1-en-2-yl)phenyl]propyl]sulfanyl]methyl]cyclopropyl]acetic acid
Montelukast Michael Adducts (Mixture of Diastereomers)
- Product Number MON-08-008
- Parent Drug Montelukast
- CAS Number 1187586-61-3 (R isomer); 1187586-58-8 (S) isomer
- Category Drug Impurities Reference Standards
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+ Synonyms -1-[[[(1R,S)-2-[3-[(1R)-1-[[[1-(carboxymethyl)cyclopropyl]methyl] sulfanyl]-3-[2-(2-hydroxypropan-2-yl)phenyl] propyl]phenyl]-1-(7-chloroquinolin-2-yl) ethyl]sulfanyl]me USP Michael Adducts Impurities
Montelukast S-Enantiomer
- Product Number MON-08-011
- Parent Drug Montelukast
- CAS Number 190078-45-6
- Category Drug Impurities Reference Standards
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+ Synonyms -[S -(E )]-1-[[[1-[3-[2-(7-chloro-2-quinolinyl)ethenyl]phenyl]-3-[2-(1-hydroxy-1-methylethyl) phenyl]propyl]thio]methyl]cyclopropaneacetic acid
Montelukast USP Impurities Set
- Product Number MON-11-003
- Parent Drug Montelukast
- CAS Number N/A
- Category Drug Impurities Reference Standards
Discontinued
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+ Synonyms -5 mg each Set of MON-08-003, -007, -008, -009, -010