Table 2.

Determination of SER.DMP in laboratory prepared mixtures with its acidic degradation products by the proposed HPLC and TLC procedures

SER.DMP. (HPLC method)
Intact (µg/mL)	Acidic degradates (µg/mL)	Degradate %	Intact found (µg/mL)	Recovery % of Intacta
5	20	80	5.04	100.86
10	15	60	10.13	101.25
12.5	12.5	50	12.61	100.91
15	10	40	14.92	99.45
20	5	20	19.90	99.52
Mean				100.40
RSD%				0.843

SER.DMP. (TLC densitometric method)
Intact (µg/spot)	Acidic degradates (µg/spot)	Degradate %	Intact found (µg/spot)	Recovery % of Intacta
5	20	80	4.99	99.96
10	15	60	10.07	100.07
12.5	12.5	50	12.51	100.21
15	10	40	14.98	99.95
20	5	20	19.60	99.85
Mean				100.01
RSD%				0.967

^aEach experiment is repeated three times