This paper introduces in detail the factors influencing the yield of the amino acetic acid with the chloroacetic acid ammonolysis process, and connecting with the production procedures, makes deep analysis, and puts forward some corresponding methods for increasing the yield. 详细介绍了***氨解法氨基乙酸生产过程中影响收率的因素,并结合生产过程进行了深入分析,有针对性地提出了提高收率的办法。
Several amino acid mixtures were separated and determined using a microemulsion with 40% hydrous content which was compared with the traditional developer of ethanol/ water/ acetic acid mixture. 同时选择含水量为40%的微乳液对氨基酸混合物进行了分离鉴定并与传统的展开剂作了比较;
A Synthetic Method of the Bone Resorption Inhibitor Amino bisphosphonates and Their Sodium Salts An intermediate of bone resorption inhibitor risedronate sodium, 3 pyridine acetic acid hydrochloride, was synthesized from ethyl nicotinate via reduction, chlorination, cyanation and hydrolysis. 骨吸收抑制剂氨基二膦酸类化合物及其钠盐的合成以烟酸乙酯为原料,经还原、氯代、氰化、水解等反应合成了骨吸收抑制剂利塞膦酸钠中间体3-吡啶乙酸盐酸盐。
After cleavage from resin, only the target peptide could be absorbed by gold nanoparticles, because the unreacted amino groups is capped by the addition of acetic anhydride and pyridine afte every step of reaction coupling amino acid. 因为合成过程中,每一步使用乙酸酐和吡啶封闭未反应的氨基,所以只有目标多肽会通过半胱氨酸的巯基与纳米金作用。