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 - Impurity D [catalogue_number] => PA 13 53040 [category_ids] => 88,82,80,78,75,71,70 [chemical_name] => [weight] => 732.39 [form] => C41H46ClNO5S2 [cas] => 1187586-61-3 [pslug] => 1187586-61-3-montelukast-impurity-d-pa1353040 [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 53040
CAS :
Molecular Formula : C41H46ClNO5S2
Molecular Weight : 732.39
stdClass Object ( [pname] => Montelukast - Impurity E [catalogue_number] => PA 13 53050 [category_ids] => 88,82,80,78,75,71,70 [chemical_name] => [weight] => 732.39 [form] => C41H46ClNO5S2 [cas] => 1187586-58-8 [pslug] => 1187586-58-8-montelukast-impurity-e-pa1353050 [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 53050
stdClass Object ( [pname] => Montelukast - Impurity F [catalogue_number] => PA 13 53060 [category_ids] => 88,82,80,78,75,71,70 [chemical_name] => [weight] => 570.14 [form] => C34H32ClNO3S [cas] => 937275-23-5 [pslug] => 937275-23-5-montelukast-impurity-f-pa1353060 [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 53060
Molecular Formula : C34H32ClNO3S
Molecular Weight : 570.14
stdClass Object ( [pname] => Montelukast - Impurity G [catalogue_number] => PA 13 53070 [category_ids] => 88,82,80,78,75,71,70 [chemical_name] => [weight] => 586.18 [form] => C35H36ClNO3S [cas] => 774538-96-4 [pslug] => 774538-96-4-montelukast-impurity-g-pa1353070 [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 53070
Molecular Formula : C35H36ClNO3S
Molecular Weight : 586.18
stdClass Object ( [pname] => Montelukast - Impurity H [catalogue_number] => PA 13 53080 [category_ids] => 88,82,80,78,75,70 [chemical_name] => [weight] => 586.14 [form] => C34H32ClNO4S [cas] => 851755-56-1 [pslug] => 851755-56-1-montelukast-impurity-h-pa1353080 [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 53080
Molecular Formula : C34H32ClNO4S
Molecular Weight : 586.14
stdClass Object ( [pname] => (S)-1-(3-(2-(7-Chloroquinolin-2-yl)vinyl)phenyl)-3-(2-(2-hydroxypropan-2-yl)phenyl)propan-1-ol [catalogue_number] => PA 13 53520 [category_ids] => 82,80,78,70,69 [chemical_name] => [weight] => 457.99 [form] => C29H28ClNO2 [cas] => 142569-70-8 [pslug] => 142569-70-8-s-1-3-2-7-chloroquinolin-2-yl-vinyl-phenyl-3-2-2-hydroxypropan-2-yl-phenyl)propan-1-ol-pa1353520 [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 53520
Molecular Formula : C29H28ClNO2
Molecular Weight : 457.99
stdClass Object ( [pname] => Montelukast (3S)-Hydroxy Benzoate [catalogue_number] => PA 13 53540 [category_ids] => 82,80,78,70,69 [chemical_name] => [weight] => 457.95 [form] => C28H24ClNO3 [cas] => 142569-69-5 [pslug] => 142569-69-5-montelukast-3s-hydroxy-benzoate-pa1353540 [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 53540
Molecular Formula : C28H24ClNO3
Molecular Weight : 457.95
stdClass Object ( [pname] => Methyl 2-(3-{3-[2-(7-chloroquinolin-2-yl)vinyl]phenyl}-3-oxopropyl)benzoate [catalogue_number] => PA 13 53550 [category_ids] => ,80,69,78,70,82, [chemical_name] => [weight] => 455.93 [form] => C28H22ClNO3 [cas] => 133791-17-0 [pslug] => 133791-17-0-methyl-2-3-3-2-7-chloroquinolin-2-yl-vinyl-phenyl-3-oxopropyl-benzoate-pa1353550 [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 53550
Molecular Formula : C28H22ClNO3
Molecular Weight : 455.93
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 Lactone [catalogue_number] => PA 13 53620 [category_ids] => ,80,71,78,70,82, [chemical_name] => [weight] => 425.91 [form] => C27H20ClNO2 [cas] => 1100617-38-6 [pslug] => 1100617-38-6-montelukast-lactone-pa1353620 [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 53620
Molecular Formula : C27H20ClNO2
Molecular Weight : 425.91
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 (3S)-Hydroxy Propanol [catalogue_number] => PA 13 53650 [category_ids] => 82,80,78,70,69 [chemical_name] => [weight] => 457.99 [form] => C29H28ClNO2 [cas] => 287930-77-2 [pslug] => 287930-77-2-montelukast-3s-hydroxy-propanol-pa1353650 [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 53650
stdClass Object ( [pname] => 7-Chloroquinaldine [catalogue_number] => PA 13 53670 [category_ids] => ,80,71,84, [chemical_name] => [weight] => 177.63 [form] => C10H8ClN [cas] => 4965-33-7 [pslug] => 4965-33-7-7-chloroquinaldine-pa1353670 [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 53670
Molecular Formula : C10H8ClN
Molecular Weight : 177.63
stdClass Object ( [pname] => Montelukast - Impurity I [catalogue_number] => PA 13 53090 [category_ids] => 82,80,78,71,70,69 [chemical_name] => [weight] => 602.18 [form] => C35H36ClNO4S [cas] => 2045402-27-3 [pslug] => 2045402-27-3-montelukast-impurity-i-pa1353090 [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 53090
Molecular Formula : C35H36ClNO4S
Molecular Weight : 602.18
stdClass Object ( [pname] => Mixture of (Montelukast Sodium, And Montelukast Methyl Impurity) [catalogue_number] => PA 13 53690 [category_ids] => ,80,69,71,78,70,82, [chemical_name] => [weight] => 1188.41 [form] => C71H76Cl2N2O6S2 [cas] => NA [pslug] => mixture-of-montelukast-sodium-and-montelukast-methyl-impurity-pa1353690 [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 53690
Molecular Formula : C71H76Cl2N2O6S2
Molecular Weight : 1188.41
stdClass Object ( [pname] => Montelukast (3R)-Hydroxy Benzoate [catalogue_number] => PA 13 53700 [category_ids] => ,80,69,71,78,70,82, [chemical_name] => [weight] => 457.95 [form] => C28H24ClNO2 [cas] => 150026-72-5 [pslug] => 150026-72-5-montelukast-3r-hydroxy-benzoate-pa1353700 [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 53700
Molecular Formula : C28H24ClNO2
stdClass Object ( [pname] => 1-(Chloromethyl)-3-(dichloromethyl)benzene [catalogue_number] => PA 13 53720 [category_ids] => ,80, [chemical_name] => [weight] => 209.5 [form] => C8H7Cl3 [cas] => 30220-25-8 [pslug] => 30220-25-8-1-chloromethyl-3-dichloromethyl-benzene-pa1353720 [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 53720
Molecular Formula : C8H7Cl3
Molecular Weight : 209.5
stdClass Object ( [pname] => 1,3-Bis(dichloromethyl)benzene [catalogue_number] => PA 13 53730 [category_ids] => ,80, [chemical_name] => [weight] => 243.95 [form] => C8H6Cl4 [cas] => 30430-40-1 [pslug] => 30430-40-1-1-3-bis-dichloromethyl-benzene-pa1353730 [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 53730
Molecular Formula : C8H6Cl4
Molecular Weight : 243.95
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] => 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 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
Molecular Formula : C36H35D3ClNO3S
Molecular Weight : 603.23
stdClass Object ( [pname] => Montelukast (3S)-Hydroxy Methylketone [catalogue_number] => PA 13 53760 [category_ids] => ,80,71,78,70,82, [chemical_name] => [weight] => 441.96 [form] => C28H24ClNO2 [cas] => 184764-13-4 [pslug] => 184764-13-4-montelukast-3s-hydroxy-methylketone-pa1353760 [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 53760
Molecular Weight : 441.96
stdClass Object ( [pname] => 2-[(3S)-3-(Acetyloxy)-1-bromo-3-[3-[(1E)-2-(7-chloro-2-quinolinyl)ethenyl]phenyl]propyl]-benzoic Acid Methyl Ester [catalogue_number] => PA 13 53780 [category_ids] => ,80,69,78,70,82, [chemical_name] => [weight] => 578.88 [form] => C30H25BrClNO4 [cas] => 184763-69-7 [pslug] => 184763-69-7-2-3s-3-acetyloxy-1-bromo-3-3-1e-2-7-chloro-2-quinolinyl-ethenyl-phenyl-propyl-benzoic-acid-methyl-ester-pa1353780 [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 53780
Molecular Formula : C30H25BrClNO4
Molecular Weight : 578.88
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 Formula : C35H36ClNO5S
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 for Peak Identification [catalogue_number] => PA 13 0531018 [category_ids] => ,80,71,76,75,93,78,70,82, [chemical_name] => [weight] => NA [form] => NA [cas] => NA [pslug] => montelukast-for-peak-identification-pa130531018 [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 0531018
Molecular Formula : NA
Molecular Weight : NA
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