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. 2007 Mar;3(1):20–30.

Table 4.

Application of the fixed time method in the quantification of the studied drugs with KMnO4

Compound Time (min.) Regression Equations Correlation Coefficient

At 610 nm
  Acarbose 2.5 A= -0.0148 + 0 .0081C r = 0.9980
5 A= -0.0133 + 0.0180 C r = 0.9997
10 A= -0.0111 + 0.0207 C r = 0.9998
15 A= -0.0073 + 0.0224C r = 0.9999
  Miglitol 5 A= -0.0105 + 0.0459 C r = 0.9996
10 A= -0.0094 + 0.0615C r = 0.9997
15 A= -0.0080 + 0.0694 C r = 0.9998
20 A= -0.0053 + 0.0741 C r = 0.9998
25 A= -0.0038 + 0.0780 C r = 0.9999
At 525 nm
  Acarbose 2.5 A= -0.0170 + 0.0160 C r = 0.9970
5 A= -0.0173 + 0.0209 C r = 0.9994
10 A= -0.0094 + 0.0256 C r = 0.9999
15 A= -0.0043 + 0.0280 C r = 0.9999
  Miglitol 5 A= -0.0067 + 0.0212 C r = 0.9980
10 A= -0.0095 + 0.0360 C r = 0.9993
15 A= 0.0002 + 0.0451 C r = 0.9995
20 A= 0.0045 + 0.0534 C r = 0.9996
25 A= 0.0098 + 0.0594C r = 0.9998