国产精品欧美一区二区三区不卡,久久综合av免费观看,大香伊蕉在人线国产av老女人,久久久久成人精品无码中文字幕,九九精品99久久久香蕉,国产在线无码精品无码,亚洲av永久无码精品网址,亚洲av中文无码乱人伦在线播放,国产精品情侣呻吟对白视频,国产亚洲欧美精品永久

[Product name]:

2,4-dihydroxy-Butanoic acid

[Structural Formula]:

[Molecular Formula]:

C₄H₈O₄

[Molecular Weight]:

 120.1

[CAS NO]:

1518-62-3

[Packing]:

Properties

Appearance

White crystal powder

Melting range ℃

Quality Specifications

Purity%

≥98.0

Moisture %

≤0.5