Suvorexant and its Impurities
Suvorexant is used to treat insomnia. Suvorexant, sold under the trade name Belsomra, is a medication for the treatment of insomnia.Reference standards of Suvorexant API, and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.

![(5R)-1-(5-Chloro-3-hydroxy-2,3-dihydrobenzo[d]oxaz PA 46 0491002](https://www.pharmaffiliates.com/pimages/PA460491002.jpg)
(5R)-1-(5-Chloro-3-hydroxy-2,3-dihydrobenzo[d]oxazol-2-yl)-5-methyl-4-(5-methyl-2-(2H-1,2,3-triazol-2-yl)benzoyl)-1,4-diazepane 1-oxide
(5R)-1-(5-Chloro-3-hydroxy-2,3-dihydrobenzo[d]oxazol-2-yl)-5-methyl-4-(5-methyl-2-(2H-1,2,3-triazol-2-yl)benzoyl)-1,4-diazepane 1-oxide
Catalogue No.:PA 46 0491002
CAS :
NA
Molecular Formula : C23H25ClN6O4
Molecular Weight : 484.94

![((7R)-4-(5-Chloro-2-hydroxy-2,3-dihydrobenzo[d]oxa PA 46 0491003](https://www.pharmaffiliates.com/pimages/PA460491003.jpg)
((7R)-4-(5-Chloro-2-hydroxy-2,3-dihydrobenzo[d]oxazol-2-yl)-7-methyl-1,4-diazepan-1-yl)(5-methyl-2-(2H-1,2,3-triazol-2-yl)phenyl)methanone
((7R)-4-(5-Chloro-2-hydroxy-2,3-dihydrobenzo[d]oxazol-2-yl)-7-methyl-1,4-diazepan-1-yl)(5-methyl-2-(2H-1,2,3-triazol-2-yl)phenyl)methanone
Catalogue No.:PA 46 0491003
CAS :
NA
Molecular Formula : C23H25ClN6O3
Molecular Weight : 468.94


(R)-5-Chloro-2-(5-methyl-4-(5-methyl-2-(2H-1,2,3-triazol-2-yl)benzoyl)-1,4-diazepan-1-yl)benzo[d]oxazole 3-oxide
(R)-5-Chloro-2-(5-methyl-4-(5-methyl-2-(2H-1,2,3-triazol-2-yl)benzoyl)-1,4-diazepan-1-yl)benzo[d]oxazole 3-oxide
Catalogue No.:PA 46 0491004
CAS :
NA
Molecular Formula : C23H23ClN6O3
Molecular Weight : 466.93

![(R)-2-(2-(4-(5-Chlorobenzo[d]oxazol-2-yl)-7-methyl PA 46 0491005](https://www.pharmaffiliates.com/pimages/PA460491005.jpg)
(R)-2-(2-(4-(5-Chlorobenzo[d]oxazol-2-yl)-7-methyl-1,4-diazepane-1-carbonyl)-4-methylphenyl)-2H-1,2,3-triazole 1,3-dioxide
(R)-2-(2-(4-(5-Chlorobenzo[d]oxazol-2-yl)-7-methyl-1,4-diazepane-1-carbonyl)-4-methylphenyl)-2H-1,2,3-triazole 1,3-dioxide
Catalogue No.:PA 46 0491005
CAS :
NA
Molecular Formula : C23H23ClN6O4
Molecular Weight : 482.93


(R)-(4-Benzyl-7-methyl-1,4-diazepan-1-yl)(5-methyl-2-(2H-1,2,3-triazol-2-yl)phenyl)methanone
(R)-(4-Benzyl-7-methyl-1,4-diazepan-1-yl)(5-methyl-2-(2H-1,2,3-triazol-2-yl)phenyl)methanone
Catalogue No.:PA 46 0491009
CAS :
1620097-07-5
Molecular Formula : C23H27N5O
Molecular Weight : 389.5

![(R)-(4-(5-Chlorobenzo[d]oxazol-2-yl)-7-methyl-1,4- PA 46 0491011](https://www.pharmaffiliates.com/pimages/PA460491011.jpg)
(R)-(4-(5-Chlorobenzo[d]oxazol-2-yl)-7-methyl-1,4-diazepan-1-yl)(5-(hydroxymethyl)-2-(2H-1,2,3-triazol-2-yl)phenyl)methanone
(R)-(4-(5-Chlorobenzo[d]oxazol-2-yl)-7-methyl-1,4-diazepan-1-yl)(5-(hydroxymethyl)-2-(2H-1,2,3-triazol-2-yl)phenyl)methanone
Catalogue No.:PA 46 0491011
CAS :
1030377-39-9
Molecular Formula : C23H23ClN6O3
Molecular Weight : 466.93

![(R)-(4-(5-chlorobenzo[d]oxazol-2-yl)-5-methyl-1,4- PA 46 0491014](https://www.pharmaffiliates.com/pimages/PA460491014.jpg)
(R)-(4-(5-chlorobenzo[d]oxazol-2-yl)-5-methyl-1,4-diazepan-1-yl)(5-methyl-2-(2H-1,2,3-triazol-2-yl)phenyl)methanone
(R)-(4-(5-chlorobenzo[d]oxazol-2-yl)-5-methyl-1,4-diazepan-1-yl)(5-methyl-2-(2H-1,2,3-triazol-2-yl)phenyl)methanone
Catalogue No.:PA 46 0491014
CAS :
1276666-19-3
Molecular Formula : C23H23ClN6O2
Molecular Weight : 450.93