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. 2017 Jun 25;22(7):1061. doi: 10.3390/molecules22071061

Table 1.

The standard curve equations of theobromine and theophylline.

Analyte Linear Equations Correlation Coefficient
Theobromine
Theophylline
Y = 9.1044 × 104 + 1.3283 × 104 X
Y = −1.0309 × 104 + 6.1173 × 104 X
0.9993
0.9999