nyenaceyg
Dołączył: 13 Gru 2010
Posty: 522
Przeczytał: 0 tematów
Ostrzeżeń: 0/5
Skąd: England
|
 Wysłany: Pon 21:55, 03 Sty 2011 Temat postu: Acetyl-L-phenyl-methanol, purification and charact |
 |
|
Acetyl-L-phenyl Purification and properties of methanol
Reaction,[link widoczny dla zalogowanych], no interference uncle be transformed into liquid engine PAC sac lesions without Nang Nang, '. A 1.0 foot. _,. 3 chemical filtration and dilution the world can be directly measured, compared with the traditional method, a simple, fast and accurate characteristics. Key standard curve in the drawing, the self-reference standard linear range 15 ~ 200pg,[link widoczny dla zalogowanych], while the value of literature ridicule 3O ~ 400pg, it may be because the reference standard used in the literature have been partially transformed into objects or other of the units are not divisible by solvent To be attention. Into possession of the PAC by ether extraction and silica gel column chromatography was split two fine, the average yield was 30.8. And by mass spectrometry, IR,[link widoczny dla zalogowanych], TLC, UV spectroscopy and optical rotation analysis is confirmed, and found that A / A a 1.63, indicating high purity quality. Study found that high purity can be generated at room temperature PAC crude colorless needle crystal. Despite TLC, DSC, UV spectroscopy,[link widoczny dla zalogowanych], mass spectrometry, optical rotation and elemental analysis,[link widoczny dla zalogowanych], its structure can not be determined, pending further study. PAC also found that high purity ethanol solution of long-term placement, we could generate more than aid is less than PAC and the second crystal of the new material, although preliminary analysis, not knowing the structure to be studied. * 129 * Studies show that, PAC is a very physical and chemical properties of sets of objects, including spinach, many of its physiological and pharmacological effects of the nature and needs further deep research.
Post został pochwalony 0 razy
|
|
