Application of a stability-indicating HPTLC method for quantitative analysis of amtolmetin guacil in a pharmaceutical dosage form

A sensitive, selective, precise, and stability-indicating HPTLC method has been established for analysis of amtolmetin guacil both as the bulk drug and in a formulation. Aluminum foil-backed silica gel 60F 254 plates were used with toluene-ethyl acetate 4:6 ( υ/υ ) as mobile phase, and densitometric analysis was performed in absorbance mode at 320 nm. The method was validated for linearity, precision, accuracy, selectivity, and specificity in accordance with ICH guidelines. Amtolmetin guacil was subjected to acidic and alkaline hydrolysis, oxidation, dry heat treatment, and photo-degradation. The method was used to study the kinetics of degradation of amtolmetin guacil by acid and alkali.