CAS: 59-46-1 Nr
Cov tsos mob: dawb crystalline hmoov
Melting point (boiling point): 59 ~ 62 ℃
Cov mis mos molecular: c13h2on2o2
Molecular Luj: 236.31
CAS: 51-05-8 Nr
Cov tsos mob: dawb crystalline hmoov los yog crystalline hmoov
Melting point (boiling point): 154 ℃ ~ 157 ℃
Cov mis mos molecular: c13h21cln2o2
Molecular Luj: 272.77
Nyob rau hauv 250ml peb necked hwj nrog stirrer thiab tus pas ntsuas kub, nitrocaine tov nrog pH ntawm 4.0-4.2 ntxiv.Nyob rau hauv tag nrho stirring, activated hlau hmoov yog ntxiv ntawm 25 ℃ nyob rau hauv ob peb zaug.Tom qab ntxiv, cov tshuaj tiv thaiv kub nce siab thiab tswj 40-45 ℃.Lub sijhawm tshuaj tiv thaiv yog 2 teev.Tom qab filtration, lim residue yog ntxuav ob zaug nrog ib tug me me ntawm cov dej, cov tshuaj ntxuav yog ua ke nrog cov filtrate, acidified rau pH 5 nrog dilute hydrochloric acid (10%), thiab saturated sodium sulfide tov yog ntxiv rau pH 7.8- 8.0 kom precipitate hlau ntsev hauv cov tshuaj tiv thaiv.Cov filtrate yog acidified rau ph6 nrog ib tug me me ntawm dilute hydrochloric acid, thiab ces rhuab ntawm 50-60 ℃ rau 10 feeb nrog ib tug me me ntawm activated carbon.Cov lim dej seem yog ntxuav ib zaug nrog dej me me, cov tshuaj ntxuav yog ua ke nrog cov lim dej, txias kom qis dua 10 ℃, thiab alkalized nrog 20% NaOH kom txog thaum procaine sib cais tag nrho (pH 9.5-10.5).Lim, ntxuav ob zaug, nias thiab ntws rau ntsev sib sau (procaine hcl)
Post lub sij hawm: Lub Xya hli ntuj-14-2021