成人免费xx,国产又黄又湿又刺激不卡网站,成人性视频app菠萝网站,色天天天天

4,4,5,8-tetramethylchroman-2-one

4,4,5,8-tetramethylchroman-2-one ??? ???
?? ??:
40662-15-5
???:
4,4,5,8-tetramethylchroman-2-one
???(??):
4,4,5,8-tetramethylchroman-2-one;2H-1-Benzopyran-2-one, 3,4-dihydro-4,4,5,8-tetramethyl-
CBNumber:
CB43386046
???:
C13H16O2
??? ??:
204.26
MOL ??:
40662-15-5.mol

4,4,5,8-tetramethylchroman-2-one ??

??

4,4,5,8-tetramethylchroman-2-one C??? ??, ??, ??

4,4,5,8-tetramethylchroman-2-one ?? ?? ? ???

???

?? ??


4,4,5,8-tetramethylchroman-2-one ?? ??

???( 2)?? ??
??? ?? ??? ?? ?? ? ??
Shanghai JiYi Biotechnology Co. Ltd. 13621943973
sales@shjiyipharmatech.com China 1166 55
Jingmo (Xiamen) Biotechnology Co., Ltd 13621943973; 13621943973
sales@jamxmpharmatech.com China 1119 58

Copyright 2019 ? ChemicalBook. All rights reserved