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Ondansetron
C18H19N3O 293.36
 4H-Carbazol-4-one, 1,2,3,9-tetrahydro-9-methyl-3-[(2-methyl-1H-imidazol-1-yl)methyl]- (±)-.
 (±)-2,3-Dihydro-9-methyl-3-[(2-methylimidazol-1-yl)methyl]carbazol-4(1H)-one [99614-02-5]

» Ondansetron contains not less than 98.0 percent and not more than 102.0 percent of C18H19N3O, calculated on the anhydrous basis.

USP REFERENCE STANDARDS FOR PURCHASE

USP Ondansetron RS
USP Ondansetron Related Compound A RS
USP Ondansetron Related Compound C RS
USP Ondansetron Related Compound D RS
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