天堂网亚洲,天天操天天搞,91视频高清,菠萝蜜视频在线观看入口,美女视频性感美女视频,95丝袜美女视频国产,超高清美女视频图片

2,2,4,4,6-pentamethyl-hexahydropyrimidine

2,2,4,4,6-pentamethyl-hexahydropyrimidine ??? ???
?? ??:
53422-22-3
???:
2,2,4,4,6-pentamethyl-hexahydropyrimidine
???(??):
2,2,4,4,6-pentamethyl-hexahydropyrimidine;Pyrimidine, hexahydro-2,2,4,4,6-pentamethyl-
CBNumber:
CB23087936
???:
C9H20N2
??? ??:
156.27
MOL ??:
53422-22-3.mol

2,2,4,4,6-pentamethyl-hexahydropyrimidine ??

??

2,2,4,4,6-pentamethyl-hexahydropyrimidine C??? ??, ??, ??

2,2,4,4,6-pentamethyl-hexahydropyrimidine ?? ?? ? ???

???

?? ??


2,2,4,4,6-pentamethyl-hexahydropyrimidine ?? ??

???( 1)?? ??
??? ?? ??? ?? ?? ? ??
Debye Scientific Corporation --
China 6891 50

Copyright 2019 ? ChemicalBook. All rights reserved