Fig. 1
HPTLC-densitogram of a mixture of a metformin (0.5 μg/band), b Saxagliptin (0.5 μg/band), and c melamine (0.1 μg/band) using a developing system of ethyl acetate–methanol-ammonia-acetic acid (6:4:1:0.3, v/v/v/v)
Fig. 1 | BMC Chemistry