CAS Registry Number: 89796-99-6 CAS Name:[[[ 2-[( 2 , 6-Dichlorophenyl ) amino ] phenyl ] acetyl ] oxy ] acetic acid Molecular Formula: C16H13Cl2NO4 Molecular Weight: 354.19. Standard : EP4,EP5 Specification: Characteristics A white or almost white crystalline powder Identification plies with the CRS Color test Loss on drying not more than 0.5% Heavy metals not more than10ppm Sulphated ash not more than 0.1% Related substances(HPLC) Individual impurity: not more than 0.2% Total impurity: not more than0.5% Assay 99.0%-101.0% Therap-Cat: Anti-inflammatory; analgesic.