Areversed phase liquid chromatographic method for determination of acetaminophen in human plasm andthe pharmacokinetics ofacetaminophen in humans were studied . The drug was extracted from human plasm with diethylethe...Areversed phase liquid chromatographic method for determination of acetaminophen in human plasm andthe pharmacokinetics ofacetaminophen in humans were studied . The drug was extracted from human plasm with diethylether . A C1 8 column (5 μm ,200 m m ×4 .6 m m ) accompaned with the mobil phase composed of methanol 0 .022 mol L Na Ac 0 .126 mol L H Ac (25 ∶50 ∶50) was used . Salicylic acid was used as internal standard and detectivewavelength was 233 nm . The calibration curves showed good linearity overthe range of 0 .112 μgml. The recoveries ofacetaminophen were 94 .3 % 101 .7 % for plasma . After a single dose of 500 mg of acetaminophen granula , theconcentration time curves conformed to one compartment model. Cm a x = (5 .94 ±0 .69) μgml , tm ax = (0 .73 ±0 .32)h ,t1 2 Ke = (2 .38 ±0 .85) h , t12 Ka = (0 .21 ±0 .14 ) h , A U C0 → ∞ = (25 .87 ±6 .73) μg·h ml .展开更多
以对氨基苯酚和乙酸酐为原料,以锌粉为抗氧化剂,以活性炭为脱色剂,以稀乙酸为反应介质,采用微波辐射技术合成对乙酰氨基酚。探索了不同反应条件对产率的影响。实验表明,当n(对氨基酚)∶n(乙酸酐)为1∶1.3,反应介质稀乙酸体积浓度为4%,...以对氨基苯酚和乙酸酐为原料,以锌粉为抗氧化剂,以活性炭为脱色剂,以稀乙酸为反应介质,采用微波辐射技术合成对乙酰氨基酚。探索了不同反应条件对产率的影响。实验表明,当n(对氨基酚)∶n(乙酸酐)为1∶1.3,反应介质稀乙酸体积浓度为4%,微波辐射功率为500 W,反应时间为17 m in,反应温度为105℃时,产率可达82.1%。展开更多
文摘Areversed phase liquid chromatographic method for determination of acetaminophen in human plasm andthe pharmacokinetics ofacetaminophen in humans were studied . The drug was extracted from human plasm with diethylether . A C1 8 column (5 μm ,200 m m ×4 .6 m m ) accompaned with the mobil phase composed of methanol 0 .022 mol L Na Ac 0 .126 mol L H Ac (25 ∶50 ∶50) was used . Salicylic acid was used as internal standard and detectivewavelength was 233 nm . The calibration curves showed good linearity overthe range of 0 .112 μgml. The recoveries ofacetaminophen were 94 .3 % 101 .7 % for plasma . After a single dose of 500 mg of acetaminophen granula , theconcentration time curves conformed to one compartment model. Cm a x = (5 .94 ±0 .69) μgml , tm ax = (0 .73 ±0 .32)h ,t1 2 Ke = (2 .38 ±0 .85) h , t12 Ka = (0 .21 ±0 .14 ) h , A U C0 → ∞ = (25 .87 ±6 .73) μg·h ml .
文摘以对氨基苯酚和乙酸酐为原料,以锌粉为抗氧化剂,以活性炭为脱色剂,以稀乙酸为反应介质,采用微波辐射技术合成对乙酰氨基酚。探索了不同反应条件对产率的影响。实验表明,当n(对氨基酚)∶n(乙酸酐)为1∶1.3,反应介质稀乙酸体积浓度为4%,微波辐射功率为500 W,反应时间为17 m in,反应温度为105℃时,产率可达82.1%。