Impurities

Montelukast Impurities

  • Montelukast - Ep Impurity F (Methyl Ketone Impurity)

  • Impurity: Montelukast - Ep Impurity F (Methyl Ketone Impurity)
  • Chemical Name: 2-(1-((((S)-3-(2-acetylphenyl)-1-(3-((E)-2-(7-chloroquinolin-2-yl)vinyl)phenyl)propyl)sulfanyl)methyl)cyclopropyl)acetic acid
  • Montelukast - EP Impurity C

  • Impurity: Montelukast - EP Impurity C
  • Chemical Name: 2-(1-(((S)-1-(3-((E)-2-(7-chloroquinolin-2-yl)vinyl)phenyl)-3-(2-(2-hydroxypropan-2-yl)phenyl)propylsulfinyl)methyl)cyclopropyl) acetic acid(Montelukast Sulfoxide impurity)
  • Montelukast - EP Impurity B

  • Impurity: Montelukast - EP Impurity B
  • Chemical Name: 2-(1-(((S)-1-(3-((E)-2-(7-chloroquinolin-2-yl)vinyl)phenyl)-3-(2-(prop-1-en-2-yl)phenyl)propylthio)methyl)cyclopropyl)acetic acid(Montelukast Styrene impurity)
  • Montelukast - EP Impurity G (Cis isomer)

  • Impurity: Montelukast - EP Impurity G (Cis isomer)
  • Chemical Name: 2-(1-((((R)-1-(3-((Z)-2-(7-chloroquinolin-2-yl)vinyl)phenyl)-3-(2-(2-hydroxypropan-2-yl)phenyl)propyl)sulfanyl)methyl)cyclopropyl)acetic acid
  • Montelukast - EP Impurity

  • Impurity: Montelukast - EP Impurity B
  • Chemical Name: 1-[[[(IR)-1-[3-[(IE)-2-(7-chloro-2-quinolinyl)ethenyl]phenyl]-3-[2-(1-hydroxy-1-methylethyl)phenyl]propyl]thio]methyl]cyclopropane acetamide (Montelukast amide impurity)
  • Montelukast - EP Impurity

  • Impurity: Montelukast - EP Impurity B
  • Chemical Name: 2-(1-((((R) -1-(3-(2-(7-Chloroquinolin-2-yl)ethyl)phenyl)-3-(2-(2-hydroxypropan-2-yl)phenyl)propyl)Sulfonyl)methyl)cyclopropyl)acetic acid
  • Montelukast - EP Impurity

  • Impurity: Montelukast - EP Impurity
  • Chemical Name: 2-[2-[3(S)-[3-[2-(7-Chloro-2-quinolinyl)-ethynyl][phenyl]-3-hydroxypropyl]phenyl]-2-propanol
  • Montelukast - Dihydro Impurity

  • Impurity: Montelukast - Dihydro Impurity
  • Chemical Name: 1-[[[(1R)-1-[3-[2-(7-Chloro-2-quinolinyl)ethyl]phenyl]-3-[2-(1-hydroxy-1-methylethyl)phenyl]propyl]thio]methyl]cyclopropaneacetic acid sodium salt
  • Montelukast Impurities

  • Impurity: Montelukast Ep Impurity A (Montelukast S-Isomer)
  • Chemical Name: 1-[[[(1S)-1-[3-[(1E)-2-(7-Chloro-2-quinolinyl)ethenyl]phenyl]-3-[2-(1-hydroxy-1methylethyl)phenyl]propyl]thio]methyl]cyclopropaneacetic acid sodium salt
  • Montelukast Impurities

  • Impurity: Montelukast Acid Impurity
  • Chemical Name: 2((3R)3({[1(carboxylatomethyl)cyclopropyl]methyl}thio)-3-{3-[(E)-2-(7-Chloroquinolin-2-yl)vinyl]phenyl}propyl)benzoated disodium salt.
  • Montelukast Impurities

  • Impurity: Montelukast Ester Impurity
  • Chemical Name: 2-[1-[[-[3-[2-(7-Chloroquinolin-2-yl)ethenyl]phenyl]3-[2-(methoxycarbonyl)phenyl]propylsulfanyl methyl]cyclopropyl]acetic acid
  • Montelukast Impurities

  • Impurity: Montelukast Cholro alcohol impurity
  • Chemical Name: 2-[2-[3S-[3(E)-[2-(7-Chloroquinoline-2-yl) ethenyl]phenyl]-3-chloropropyl]phenyl]-2-propanol
  • Montelukast Impurities

  • Impurity: Montelukast EP Impurity D&E
  • Chemical Name: 1-[[[(1R)-1-[3-[(1R)-1[[[1-(carboxymethyl)cyclopropyl]methyl]sulfanyl]-2-(7-chloroquinolin-2-yl)ethyl]phenyl]-3-[2-(1-hydroxy-1-methylethyl)phenyl]propyl] sulfanyl]methyl]cyclopropyl]acetic acid
  • Montelukast Impurities

  • Impurity: Montelukast Nitrile Impurity
  • Chemical Name: :[1-[[[(1R)-1-[3-[(1E)-2-(7-chloro-2-quinolinyl) ethenyl]phenyl]-3-[2-(1-hydroxy-1-methylethyl) phenyl]propyl]thio]methyl]cyclopropane acetonitrile
  • Montelukast Impurities

  • Impurity: Montelukast Impurity Quid-8
  • Chemical Name: 2-[2[3(S)-[3-[2-[7-chloro-2-quinolinyl]ethenyl] phenyl]-3-hydroxypropyl]phenyl]-2-propanol
  • Montelukast Impurities

  • Impurity: Montelukast EP Impurity H
  • Chemical Name: [1-[[[(1R)-1-[3-[(E)-2-(7-chloroquinolin-2-yl) ethenyl]phenyl]-3-[2-(methoxycarbonyl)phenyl] propyl]sulfanyl]methyl]cyclopropyl]acetic acid

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