Bictegravir and its Impurities
Bictegravir (INN, BIC, formerly known as GS-9883) is an antiviral drug of the integrase inhibitor class that was structurally derived from an earlier compound dolutegravir by scientists at Gilead Sciences. Reference standards of Bictegravir API,and its pharmacopeial, non pharmacopeial impurities, and stable isotopes are listed below.


(S)-3,9-Dihydroxy-2-((1S,3R)-3-hydroxycyclopentyl)-1,8-dioxo-N-(2,4,6-trifluorobenzyl)-1,3,4,8-tetrahydro-2H-pyrido[1,2-a]pyrazine-7-carboxamide
(S)-3,9-Dihydroxy-2-((1S,3R)-3-hydroxycyclopentyl)-1,8-dioxo-N-(2,4,6-trifluorobenzyl)-1,3,4,8-tetrahydro-2H-pyrido[1,2-a]pyrazine-7-carboxamide
Catalogue No.:PA 02 1911000
CAS :
NA
Molecular Formula : C21H20F3N3O6
Molecular Weight : 467.4


(R)-3,9-Dihydroxy-2-((1S,3R)-3-hydroxycyclopentyl)-1,8-dioxo-N-(2,4,6-trifluorobenzyl)-1,3,4,8-tetrahydro-2H-pyrido[1,2-a]pyrazine-7-carboxamide
(R)-3,9-Dihydroxy-2-((1S,3R)-3-hydroxycyclopentyl)-1,8-dioxo-N-(2,4,6-trifluorobenzyl)-1,3,4,8-tetrahydro-2H-pyrido[1,2-a]pyrazine-7-carboxamide
Catalogue No.:PA 02 1911001
CAS :
NA
Molecular Formula : C21H20F3N3O6
Molecular Weight : 467.4


(2R,5S)-8-Hydroxy-7,9-dioxo-10-((2,4,6-trifluorobenzyl)carbamoyl)-2,3,4,5,7,9,13,13a-octahydro-2,5-methanopyrido[1',2':4,5]pyrazino[2,1-b][1,3]oxazepine 6,12-dioxide
(2R,5S)-8-Hydroxy-7,9-dioxo-10-((2,4,6-trifluorobenzyl)carbamoyl)-2,3,4,5,7,9,13,13a-octahydro-2,5-methanopyrido[1',2':4,5]pyrazino[2,1-b][1,3]oxazepine 6,12-dioxide
Catalogue No.:PA 02 1911002
CAS :
NA
Molecular Formula : C21H18F3N3O7
Molecular Weight : 481.38


(2S,5R,13aS)-8-Hydroxy-7,9-dioxo-N-(2,4,6-trifluorobenzyl)-2,3,4,5,7,9,13,13a-octahydro-2,5-methanopyrido[1',2':4,5]pyrazino[2,1-b][1,3]oxazepine-10-carboxamide
(2S,5R,13aS)-8-Hydroxy-7,9-dioxo-N-(2,4,6-trifluorobenzyl)-2,3,4,5,7,9,13,13a-octahydro-2,5-methanopyrido[1',2':4,5]pyrazino[2,1-b][1,3]oxazepine-10-carboxamide
Catalogue No.:PA 02 1911003
CAS :
1616340-12-5
Molecular Formula : C21H18F3N3O5
Molecular Weight : 449.39


(2R,5R,13aR)-8-Hydroxy-7,9-dioxo-N-(2,4,6-trifluorobenzyl)-2,3,4,5,7,9,13,13a-octahydro-2,5-methanopyrido[1',2':4,5]pyrazino[2,1-b][1,3]oxazepine-10-carboxamide
(2R,5R,13aR)-8-Hydroxy-7,9-dioxo-N-(2,4,6-trifluorobenzyl)-2,3,4,5,7,9,13,13a-octahydro-2,5-methanopyrido[1',2':4,5]pyrazino[2,1-b][1,3]oxazepine-10-carboxamide
Catalogue No.:PA 02 1911004
CAS :
1846582-14-6
Molecular Formula : C21H18F3N3O5
Molecular Weight : 449.39


(2R,5S,13aR)-8-Methoxy-7,9-dioxo-N-(2,4,6-trifluorobenzyl)-2,3,4,5,7,9,13,13a-octahydro-2,5-methanopyrido[1',2':4,5]pyrazino[2,1-b][1,3]oxazepine-10-carboxamide
(2R,5S,13aR)-8-Methoxy-7,9-dioxo-N-(2,4,6-trifluorobenzyl)-2,3,4,5,7,9,13,13a-octahydro-2,5-methanopyrido[1',2':4,5]pyrazino[2,1-b][1,3]oxazepine-10-carboxamide
Catalogue No.:PA 02 1911005
CAS :
1616340-94-3
Molecular Formula : C22H20F3N3O5
Molecular Weight : 463.41


(2R,5S,13aR)-N-(2,4-Difluorobenzyl)-8-hydroxy-7,9-dioxo-2,3,4,5,7,9,13,13a-octahydro-2,5-methanopyrido[1',2':4,5]pyrazino[2,1-b][1,3]oxazepine-10-carboxamide
(2R,5S,13aR)-N-(2,4-Difluorobenzyl)-8-hydroxy-7,9-dioxo-2,3,4,5,7,9,13,13a-octahydro-2,5-methanopyrido[1',2':4,5]pyrazino[2,1-b][1,3]oxazepine-10-carboxamide
Catalogue No.:PA 02 1911006
CAS :
1611493-56-1
Molecular Formula : C21H19F2N3O5
Molecular Weight : 431.4


(2S,5R,13aS)-N-(2-Fluorobenzyl)-8-hydroxy-7,9-dioxo-2,3,4,5,7,9,13,13a-octahydro-2,5-methanopyrido[1',2':4,5]pyrazino[2,1-b][1,3]oxazepine-10-carboxamide
(2S,5R,13aS)-N-(2-Fluorobenzyl)-8-hydroxy-7,9-dioxo-2,3,4,5,7,9,13,13a-octahydro-2,5-methanopyrido[1',2':4,5]pyrazino[2,1-b][1,3]oxazepine-10-carboxamide
Catalogue No.:PA 02 1911007
CAS :
1616339-90-2
Molecular Formula : C21H20FN3O5
Molecular Weight : 413.41


(2S,5R,13aS)-N-(4-Fluorobenzyl)-8-hydroxy-7,9-dioxo-2,3,4,5,7,9,13,13a-octahydro-2,5-methanopyrido[1',2':4,5]pyrazino[2,1-b][1,3]oxazepine-10-carboxamide
(2S,5R,13aS)-N-(4-Fluorobenzyl)-8-hydroxy-7,9-dioxo-2,3,4,5,7,9,13,13a-octahydro-2,5-methanopyrido[1',2':4,5]pyrazino[2,1-b][1,3]oxazepine-10-carboxamide
Catalogue No.:PA 02 1911008
CAS :
1616339-82-2
Molecular Formula : C21H20FN3O5
Molecular Weight : 413.41


(2S,5R,13aS)-N-(2,6-Difluorobenzyl)-8-hydroxy-7,9-dioxo-2,3,4,5,7,9,13,13a-octahydro-2,5-methanopyrido[1',2':4,5]pyrazino[2,1-b][1,3]oxazepine-10-carboxamide
(2S,5R,13aS)-N-(2,6-Difluorobenzyl)-8-hydroxy-7,9-dioxo-2,3,4,5,7,9,13,13a-octahydro-2,5-methanopyrido[1',2':4,5]pyrazino[2,1-b][1,3]oxazepine-10-carboxamide
Catalogue No.:PA 02 1911009
CAS :
1616340-13-6
Molecular Formula : C21H19F2N3O5
Molecular Weight : 431.4


1-(2,2-Dimethoxyethyl)-5-methoxy-6-(methoxycarbonyl)-4-oxo-1,4-dihydropyridine-3-carboxylic Acid
1-(2,2-Dimethoxyethyl)-5-methoxy-6-(methoxycarbonyl)-4-oxo-1,4-dihydropyridine-3-carboxylic Acid
Catalogue No.:PA 02 1911010
CAS :
1335210-23-5
Molecular Formula : C13H17NO8
Molecular Weight : 315.28


(2S,3S,4S,5R,6S)-6-(((2R,5S,13aR)-7,9-Dioxo-10-((2,4,6-trifluorobenzyl)carbamoyl)-2,3,4,5,7,9,13,13a-octahydro-2,5-methanopyrido[1',2':4,5]pyrazino[2,1-b][1,3]oxazepin-8-yl)oxy)-3,4,5-trihydroxytetrahydro-2H-pyran-2-carboxylic acid
(2S,3S,4S,5R,6S)-6-(((2R,5S,13aR)-7,9-Dioxo-10-((2,4,6-trifluorobenzyl)carbamoyl)-2,3,4,5,7,9,13,13a-octahydro-2,5-methanopyrido[1',2':4,5]pyrazino[2,1-b][1,3]oxazepin-8-yl)oxy)-3,4,5-trihydroxytetrahydro-2H-pyran-2-carboxylic acid
Catalogue No.:PA 02 1911011
CAS :
2365156-60-9
Molecular Formula : C27H26F3N3O11
Molecular Weight : 625.51


9-Hydroxy-2-((1S,3R)-3-hydroxycyclopentyl)-1,8-dioxo-N-(2,4,6-trifluorobenzyl)-1,8-dihydro-2H-pyrido[1,2-a]pyrazine-7-carboxamide
9-Hydroxy-2-((1S,3R)-3-hydroxycyclopentyl)-1,8-dioxo-N-(2,4,6-trifluorobenzyl)-1,8-dihydro-2H-pyrido[1,2-a]pyrazine-7-carboxamide
Catalogue No.:PA 02 1911012
CAS :
NA
Molecular Formula : C21H18F3N3O5
Molecular Weight : 449.39


(2R,5S,13aR)-8-Hydroxy-7,9-dioxo-10-((2,4,6-trifluorobenzyl)carbamoyl)-2,3,4,5,7,9,13,13a-octahydro-2,5-methanopyrido[1',2':4,5]pyrazino[2,1-b][1,3]oxazepine 6,12-dioxide
(2R,5S,13aR)-8-Hydroxy-7,9-dioxo-10-((2,4,6-trifluorobenzyl)carbamoyl)-2,3,4,5,7,9,13,13a-octahydro-2,5-methanopyrido[1',2':4,5]pyrazino[2,1-b][1,3]oxazepine 6,12-dioxide
Catalogue No.:PA 02 1911013
CAS :
NA
Molecular Formula : C21H18F3N3O7
Molecular Weight : 481.38


(2R,5S,13aR)-N-(2,4-Difluoro-6-(nitroso(2,4,6-trifluorobenzyl)amino)benzyl)-8-hydroxy-7,9-dioxo-2,3,4,5,7,9,13,13a-octahydro-2,5-methanopyrido[1',2':4,5]pyrazino[2,1-b][1,3]oxazepine-10-carboxamide
(2R,5S,13aR)-N-(2,4-Difluoro-6-(nitroso(2,4,6-trifluorobenzyl)amino)benzyl)-8-hydroxy-7,9-dioxo-2,3,4,5,7,9,13,13a-octahydro-2,5-methanopyrido[1',2':4,5]pyrazino[2,1-b][1,3]oxazepine-10-carboxamide
Catalogue No.:PA 02 1911014
CAS :
NA
Molecular Formula : C28H22F5N5O6
Molecular Weight : 619.51