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

5-?????-4-(???????)-6-??-???-3-???????

5-?????-4-(???????)-6-??-???-3-???????
5-?????-4-(???????)-6-??-???-3-??????? ??? ???
?? ??:
6560-46-9
???:
5-?????-4-(???????)-6-??-???-3-???????
???(??):
5-?????-4-(???????)-6-??-???-3-???????
???:
5-hydroxy-4-(hydroxymethyl)-6-methyl-pyridine-3-carbaldehyde
???(??):
Isopyridoxal;5-Hydroxy-4-(hydroxymethyl)-6-methylnicotinaldehyde;5-Hydroxy-4-(hydroxymethyl)-6-methyl-3-pyridinecarbaldehyde;5-hydroxy-4-(hydroxymethyl)-6-methyl-pyridine-3-carbaldehyde;3-Pyridinecarboxaldehyde, 5-hydroxy-4-(hydroxymethyl)-6-methyl-
CBNumber:
CB71236038
???:
C8H9NO3
??? ??:
167.16
MOL ??:
6560-46-9.mol

5-?????-4-(???????)-6-??-???-3-??????? ??

?? ?? (pKa)
pKa 4.00(H2O,t =25,I>0.1) (Uncertain)

??

5-?????-4-(???????)-6-??-???-3-??????? C??? ??, ??, ??

5-?????-4-(???????)-6-??-???-3-??????? ?? ?? ? ???

???

?? ??


5-?????-4-(???????)-6-??-???-3-??????? ?? ??

???( 4)?? ??
??? ?? ??? ?? ?? ? ??
QUALITY CONTROL SOLUTIONS LTD.
0755-66853366; 13670046396
ORDERS@QCSRM.COM China 24342 58
SHENZHEN PHYSTANDARD BIO-TECH CO.,LTD 0755-0755-0755-83725350 13380397412
3001280422@qq.com China 10005 58
Nanjing Huanuo Biomedical Technology Co., Ltd 18913906212
2885426135@qq.com China 7160 58
Guangzhou Zhenlin Pharmaceutical Technology Co., Ltd 18102736234 18102736234
2208093734@qq.com China 7664 58

Copyright 2019 ? ChemicalBook. All rights reserved