A leukotriene receptor antagonist, Montelukast is used for treating asthma and other allergic symptoms. It works by blocking a substance called leukotriene, which helps to decrease certain asthma and allergy symptoms. Reference standards of Montelukast API,and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.
stdClass Object ( [pname] => Montelukast [catalogue_number] => PA 13 53000 [category_ids] => ,69,78,70,82,88, [chemical_name] => [weight] => 586.18 [form] => C35H36ClNO3S [cas] => 158966-92-8 [pslug] => 158966-92-8-montelukast-api-pa1353000 [latest_product] => 0 [linkproducts] => 1 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA 13 53000
CAS :
Molecular Formula : C35H36ClNO3S
Molecular Weight : 586.18
stdClass Object ( [pname] => Montelukast Sodium [catalogue_number] => PA 13 53510 [category_ids] => ,69,78,70,82,88, [chemical_name] => [weight] => 608.17 [form] => C35H35ClNNaO3S [cas] => 151767-02-1 [pslug] => 151767-02-1-montelukast-sodium-api-standards-pa1353510 [latest_product] => 0 [linkproducts] => 1 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA 13 53510
Molecular Formula : C35H35ClNNaO3S
Molecular Weight : 608.17
stdClass Object ( [pname] => 1-(Mercaptomethyl)cyclopropaneacetic Acid [catalogue_number] => PA 13 53530 [category_ids] => ,88, [chemical_name] => [weight] => 146.21 [form] => C6H10O2S [cas] => 162515-68-6 [pslug] => 162515-68-6-1-mercaptomethyl-cyclopropaneacetic-acid-pa1353530 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA 13 53530
Molecular Formula : C6H10O2S
Molecular Weight : 146.21
stdClass Object ( [pname] => Montelukast Sulfone [catalogue_number] => PA 13 53560 [category_ids] => ,71,75,78,70,82,88, [chemical_name] => [weight] => 618.18 [form] => C35H36ClNO5S [cas] => 2714018-24-1 [pslug] => 2714018-24-1-montelukast-sulfone-pa1353560 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA 13 53560
Molecular Formula : C35H36ClNO5S
Molecular Weight : 618.18
stdClass Object ( [pname] => Montelukast Disulfide Impurity [catalogue_number] => PA 13 53580 [category_ids] => ,69,78,70,82,88, [chemical_name] => [weight] => 290.4 [form] => C12H18O4S2 [cas] => 162515-67-5 [pslug] => 162515-67-5-montelukast-disulfide-impurity-pa1353580 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA 13 53580
Molecular Formula : C12H18O4S2
Molecular Weight : 290.4
stdClass Object ( [pname] => Montelukast Ether Impurity [catalogue_number] => PA 13 53590 [category_ids] => ,80,71,75,78,70,82,88, [chemical_name] => [weight] => 439.98 [form] => C29H26ClNO [cas] => 168214-67-3 [pslug] => 168214-67-3-montelukast-ether-impurity-pa1353590 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA 13 53590
Molecular Formula : C29H26ClNO
Molecular Weight : 439.98
stdClass Object ( [pname] => Montelukast Dicyclohexylamine [catalogue_number] => PA 13 53600 [category_ids] => ,88,82,78,70,69, [chemical_name] => [weight] => 767.5 [form] => C47H59ClN2O3S [cas] => 577953-88-9 [pslug] => 577953-88-9-montelukast-dicyclohexylamine-api-standards-pa1353600 [latest_product] => 0 [linkproducts] => 1 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA 13 53600
Molecular Formula : C47H59ClN2O3S
Molecular Weight : 767.5
stdClass Object ( [pname] => Montelukast Dihydro Impurity [catalogue_number] => PA 13 53610 [category_ids] => ,69,75,78,70,82,88, [chemical_name] => [weight] => 610.18 [form] => C35H37ClNNaO3S [cas] => 142147-98-6 [pslug] => 142147-98-6-montelukast-dihydro-impurity-pa1353610 [latest_product] => 0 [linkproducts] => 1 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA 13 53610
Molecular Formula : C35H37ClNNaO3S
Molecular Weight : 610.18
stdClass Object ( [pname] => Montelukast Amide [catalogue_number] => PA 13 53630 [category_ids] => ,80,71,78,70,82,88, [chemical_name] => [weight] => 585.2 [form] => C35H37ClN2O2S [cas] => 866923-63-9 [pslug] => 866923-63-9-montelukast-amide-pa1353630 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA 13 53630
Molecular Formula : C35H37ClN2O2S
Molecular Weight : 585.2
stdClass Object ( [pname] => Montelukast Cyclopropaneacetonitrile [catalogue_number] => PA 13 53640 [category_ids] => ,69,78,70,82,88, [chemical_name] => [weight] => 567.18 [form] => C35H35ClN2OS [cas] => 866923-62-8 [pslug] => 866923-62-8-montelukast-cyclopropaneacetonitrile-pa1353640 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA 13 53640
Molecular Formula : C35H35ClN2OS
Molecular Weight : 567.18
stdClass Object ( [pname] => Montelukast KSM-II Lactone Impurity [catalogue_number] => PA 13 53710 [category_ids] => ,88, [chemical_name] => [weight] => 128.19 [form] => C6H8OS [cas] => 162515-66-4 [pslug] => 162515-66-4-montelukast-ksm-ii-lactone-impurity-pa1353710 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA 13 53710
Molecular Formula : C6H8OS
Molecular Weight : 128.19
stdClass Object ( [pname] => Des[3-[[(1-Carboxymethyl)cyclopropyl]methyl]thio]-2-propenyl Montelukast-d6 Mesylate [catalogue_number] => PA STI 027340 [category_ids] => ,80,71,75,78,70,82,88,98, [chemical_name] => [weight] => 542.12 [form] => C30H24D6ClNO4S [cas] => NA [pslug] => des-3-1-carboxymethyl-cyclopropyl-methyl-thio-2-propenyl-montelukast-d6-mesylate-pasti027340 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA STI 027340
Molecular Formula : C30H24D6ClNO4S
Molecular Weight : 542.12
stdClass Object ( [pname] => 2,2-Dimethoxy-d6 Montelukast [catalogue_number] => PA STI 033730 [category_ids] => ,69,78,70,82,88,98, [chemical_name] => [weight] => 620.27 [form] => C37H34D6ClNO3S [cas] => NA [pslug] => 2-2-dimethoxy-d6-montelukast-pasti033730 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA STI 033730
Molecular Formula : C37H34D6ClNO3S
Molecular Weight : 620.27
stdClass Object ( [pname] => 21(R)-Hydroxy Montelukast-d6 [catalogue_number] => PA STI 050340 [category_ids] => ,69,98,76,75,78,70,82,88, [chemical_name] => [weight] => 608.22 [form] => C35H30D6ClNO4S [cas] => NA [pslug] => 21-r-hydroxy-montelukast-d6-pasti050340 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA STI 050340
Molecular Formula : C35H30D6ClNO4S
Molecular Weight : 608.22
stdClass Object ( [pname] => 21(S)-Hydroxy Montelukast-d6 [catalogue_number] => PA STI 050350 [category_ids] => ,69,98,76,75,78,70,82,88, [chemical_name] => [weight] => 608.22 [form] => C35H30D6ClNO4S [cas] => NA [pslug] => 21-s-hydroxy-montelukast-d6-pasti050350 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA STI 050350
stdClass Object ( [pname] => Methoxy-d3 Montelukast [catalogue_number] => PA STI 059630 [category_ids] => ,69,75,98,78,70,82,88, [chemical_name] => [weight] => 603.23 [form] => C36H35D3ClNO3S [cas] => NA [pslug] => methoxy-d3-montelukast-pasti059630 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA STI 059630
Molecular Formula : C36H35D3ClNO3S
Molecular Weight : 603.23
stdClass Object ( [pname] => Montelukast-d6 Bis-sulfide (mixture of diastereomers) [catalogue_number] => PA STI 066190 [category_ids] => ,80,71,75,98,78,70,82,88, [chemical_name] => [weight] => 738.43 [form] => C41H40D6ClNO5S2 [cas] => NA [pslug] => montelukast-d6-bis-sulfide- -mixture-of-diastereomers-pasti066190 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA STI 066190
Molecular Formula : C41H40D6ClNO5S2
Molecular Weight : 738.43
stdClass Object ( [pname] => Montelukast Cyclopropaneacetonitrile-d6 [catalogue_number] => PA STI 066230 [category_ids] => ,69,98,78,70,82,88, [chemical_name] => [weight] => 573.22 [form] => C35H29D6ClN2OS [cas] => NA [pslug] => montelukast-cyclopropaneacetonitrile-d6-pasti066230 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA STI 066230
Molecular Formula : C35H29D6ClN2OS
Molecular Weight : 573.22
stdClass Object ( [pname] => Montelukast Methyl Ester-d3 [catalogue_number] => PA STI 066240 [category_ids] => ,80,71,75,98,78,70,82,88, [chemical_name] => [weight] => 603.23 [form] => C36H35D3ClNO3S [cas] => NA [pslug] => montelukast-methyl-ester-d3-pasti066240 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA STI 066240
stdClass Object ( [pname] => 2-[2-[(3S)-3-[3-[(E)-2-(7-Chloro-2-quinolinyl)ethenyl]phenyl]-3-[(methanesulfonyl)oxy]propyl]phenyl]-2-propanol [catalogue_number] => PA 13 53800 [category_ids] => ,80,71,75,78,70,82,88, [chemical_name] => [weight] => 536.08 [form] => C30H30ClNO4S [cas] => 807638-71-7 [pslug] => 807638-71-7-2-2-3s-3-3-e-2-7-chloro-2-quinolinyl-ethenyl-phenyl-3-methanesulfonyl-oxy-propyl-phenyl-2-propanol-pa1353800 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA 13 53800
Molecular Formula : C30H30ClNO4S
Molecular Weight : 536.08
stdClass Object ( [pname] => (R,E)-2-(1-(((1-(3-(2-(7-Chloroquinolin-2-yl)vinyl)phenyl)-3-(2-(2-hydroxypropan-2-yl)phenyl)propyl)sulfonyl)methyl)cyclopropyl)acetic Acid [catalogue_number] => PA 13 53810 [category_ids] => ,80,71,75,78,70,82,88, [chemical_name] => [weight] => 618.19 [form] => C35H36ClNO5S [cas] => 1266620-74-9 [pslug] => 1266620-74-9-r-e-2-1-1-3-2-7-chloroquinolin-2-yl-vinyl-phenyl-3-2-2-hydroxypropan-2-yl-phenyl-propyl-sulfonyl-methyl-cyclopropyl-acetic-acid-pa1353810 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA 13 53810
Molecular Weight : 618.19
stdClass Object ( [pname] => 2-(2-((E)-3-(3-((E)-2-(7-Chloroquinolin-2-yl)vinyl)phenyl)allyl)phenyl)propan-2-ol [catalogue_number] => PA 13 53820 [category_ids] => ,80,71,75,78,70,82,88, [chemical_name] => [weight] => 439.98 [form] => C29H26ClNO [cas] => 1187586-63-5 [pslug] => 1187586-63-5-2-2-e-3-3-e-2-7-chloroquinolin-2-yl-vinyl-phenyl-allyl-phenyl-propan-2-ol-pa1353820 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA 13 53820
stdClass Object ( [pname] => (E)-2-(1-(((1-(3-(2-(7-Chloroquinolin-2-yl)vinyl)phenyl)-3-(2-(1-hydroxyethyl)phenyl)propyl)sulfinyl)methyl)cyclopropyl)acetic Acid [catalogue_number] => PA 13 53830 [category_ids] => ,80,71,75,78,70,82,88, [chemical_name] => [weight] => 588.16 [form] => C34H34ClNO4S [cas] => NA [pslug] => e-2-1-1-3-2-7-chloroquinolin-2-yl-vinyl-phenyl-3-2-1-hydroxyethyl-phenyl-propyl-sulfinyl-methyl-cyclopropyl-acetic-acid-pa1353830 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA 13 53830
Molecular Formula : C34H34ClNO4S
Molecular Weight : 588.16
stdClass Object ( [pname] => Montelukast Gem-dimethylmethylene Analogue [catalogue_number] => PA 13 53840 [category_ids] => ,69,74,78,70,82,88, [chemical_name] => [weight] => 588.2 [form] => C35H38ClNO3S [cas] => 162489-70-5 [pslug] => 162489-70-5-montelukast-gem-dimethylmethylene-analogue-pa1353840 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA 13 53840
Molecular Formula : C35H38ClNO3S
Molecular Weight : 588.2
stdClass Object ( [pname] => 1-((((S)-2-(3-((R)-1-(((1-(Carboxymethyl)cyclopropyl)methyl)thio)-3-(2-(2-hydroxypropan-2-yl)phenyl)propyl)phenyl)-1-(7-chloroquinolin-2-yl)ethyl)thio)methyl)cyclopropane-1-carboxylic Acid [catalogue_number] => PA 13 0531000 [category_ids] => ,69,88,78,70,82, [chemical_name] => [weight] => 718.36 [form] => C40H44ClNO5S2 [cas] => 1360561-92-7 [pslug] => 1360561-92-7-1-s-2-3-r-1-1-carboxymethyl-cyclopropyl-methyl-thio-3-2-2-hydroxypropan-2-yl-phenyl-propyl-phenyl-1-7-chloroquinolin-2-yl-ethyl-thio-methyl-cyclopropane-1-carboxylic-acid-pa130531000 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA 13 0531000
Molecular Formula : C40H44ClNO5S2
Molecular Weight : 718.36
stdClass Object ( [pname] => Montelukast Ketocarbinol [catalogue_number] => PA 13 0531017 [category_ids] => ,69,78,70,82,88, [chemical_name] => [weight] => 588.16 [form] => C34H34ClNO4S [cas] => NA [pslug] => montelukast-ketocarbinol-pa130531017 [latest_product] => 0 [linkproducts] => 0 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA 13 0531017
stdClass Object ( [pname] => Montelukast - Impurity G (Sodium Salt) [catalogue_number] => PA 13 0530071 [category_ids] => ,88,82,78,75,70, [chemical_name] => [weight] => 608.17 [form] => C35H35ClNNaO3S [cas] => 1428448-96-7 [pslug] => 1428448-96-7-montelukast-impurity-g-sodium-salt-pa130530071 [latest_product] => 0 [linkproducts] => 1 [offers_id] => [offers_name] => [offers_status] => [offers_start_date] => [offers_end_date] => [pageview] => [offers_slug] => [offers_product_id] => [offers_product_code] => [offers_master_id] => [offer_percentage] => [offers_product_main_cat] => )
Catalogue No.:PA 13 0530071
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