Specification :

IST01: Irbesartan

2-Butyl-3-[ p-( o-1H-tetrazol-5-ylphenyl) benzyl] -1, 3-diazaspiro[ 4. 4] non-1-en-4-one
( " BMS-186295" ; " SR-47436" )
[ 138402-11-6]

IST01D3: Irbesartan-d3

IST02: Irbesartan USP Related Compound A

1-pentanoylamino-cyclopentanecarboxylic acid [ 2' -( 1H-tetrazol-5-yl) -biphenyl-4-ylmethyl] -amide ;
Irbesartan Metabolite " SR-49498"
[ CAS # 748812-53-5]

IST03: Irbesartan N1-Trityl Impurity

2-Butyl-3-[ [ 4-[ 2-( 2-trityl-tetrazol-5-yl) phenyl] phenyl] methyl] -1, 3 -diazaspiro[ 4.4] non-1-en-4-one
[ CAS # 138402-10-5]

IST04: Irbesartan Lactam Impurity

2-Butyl-4-spirocyclopentane-2-imidazolin-5-one hydrochloride
[ CAS # 151257-01-1]

IST05: Irbesartan Bromo Impurity

5-( 4' -( Bromomethyl) ( 1, 1' -biphenyl) -2-yl) -1-trityl-1H-tetrazole
[ CA S # 124750-51-2]