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Table 3 Determination of ETD in presence of additives or excipients.

From: Spectrophotometric determination of etodolac in pure form and pharmaceutical formulations

Material Amount (mg) Method A Method B Method C
   Recovery a %± SD b Recovery a %± SD b Recovery a %± SD b
Lactose 50 99.63 ± 0.82 99.20 ± 0.78 100.2 ± 0.51
Glucose 50 98.84 ± 0.67 100.35 ± 1.22 99.55 ± 0.88
Dextrose 50 99.30 ± 0.78 98.70 ± 0.56 98.65 ± 0.46
Magnesium stearate 30 99.25 ± 0.75 99.55 ± 0.89 100.15 ± 1.30
Calcium hydrogen phosphate 50 99.50 ± 0.96 98.95 ± 0.73 99.40 ± 0.84
Talc 40 99.80 ± 0.61 100.40 ± 1.05 100.10 ± 0.95
Starch 50 100.05 ± 1.14 98.80 ± 0.69 99.75 ± 0.62
  1. a 6.0 μg mL-1 of ETD was taken.
  2. b Average of five determinations.
  3. SD: Standard deviation.