| 发明名称 |
SPECTRO-PHOTOMETRIC METHOD TO QUANTITATIVE DETERMINATION OF VALEPOTRIATES |
| 摘要 |
<p>The process comprises extraction by solvents (methyl alcohol, dichloroethane, ethyl acetate, chloroform, 70% ethyl alcohol or binary mixts. of these), vacuum, distn. to dryness, treatment with methyl alcohol and spectrophotometry based on the extinctions of the colourings. Thus condensation reaction with 2,4-dinitrophenyl hydrazine at 480nm wavelength in 1cm quartz containers is here compared with the extinction value of the pure prod. under the same conditions.</p> |
| 申请公布号 |
RO102727(A2) |
申请公布日期 |
1991.11.18 |
| 申请号 |
RO19890137937 |
申请日期 |
1989.01.27 |
| 申请人 |
CENTRUL DE CERCETARE SI PRELUCRARE A PLANTELOR MEDICINALE "PLANTAVOREL", PIATRA-NEAMT, JUDETUL NEAMT, RO |
发明人 |
VAGAI FLORENTINA, RO;GROSU ISIDOR, RO;ASAFTEI RODICA, RO;GROSU ELENA, RO |
| 分类号 |
G01N21/29;G01N25/14;G01N33/15;(IPC1-7):G01N33/15 |
主分类号 |
G01N21/29 |
| 代理机构 |
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