12↑↑↑↓3–4–––5NNNNOO.H2ONH2NOO6NNNNOO.H2ONH2NOO78NNNNOO.H2O9NNNNOO.H2O13710NNNNOO137645HNNNNOOHHH1867543291112HCOOHOHONNNONOHNHNHOOOONaOHNNOONHNaNO2,H2SO4NNOONHNOHFe,HClNNOONH2NH2NNOONHNH2ONaOHNNOOHNNNaOHNNOONN.H2O(CH3)2SO41,2,13NNOOHNNNaOHNNOONN.H2O(CH3)2SO4(7-methyl-theophylline)14NNNNOO.H2O15––z16NNNNOO-OOHOH17––NNNNOHHOONNNNOHH-CO2NaOH,H2ONNNNOOCaffeidine18–C8H10NO2+2I2+KI+HCl.HI.2I2[C8H10N4O2]KCl+[C8H10N4O2].HI.2I2+NaOHC8H10N4O2+NaI+2I2+H2O19–NNOOONH4NNNOOONH3NNNNOONNOOOONNOOHOO+KClO3,HClNNOOOHONNOOOOHNNOOOHNNNOOONNOOOHNNNOOONH3-H2O2021NNNNOO.H2O22–CaffeineNNNNOO.H2ONNNNOOHNNNNOOH23––NNNNOOHNNNNOOHNNNNOO.H2O24NNNNOOHNNNNOOHNNNNOO.H2O13764525–NNNNOOHNH2NH2.2627NH2NOO28NH2NOO29CH3ONaNH3ClCH2COOEtNHONNaONOOONONH2O30•–––NH2NOO31HOOHONH2O32–NH2NOO33NOONH2NOONH2OH14ONNOONOO3435HNH2OHPPAHNOHNFFFH36.HClNO.HClOONHH.HClNHOH37HNH•HNOOH3839NNNNOO.H2O137645NOONH240