欧美日韩国产另类A∨视频_亚洲欧美日韩一区高清中文字菲_在线无码视频二区_精品国产一级片在线观看_亚洲日韩另类制服无码AV_无翼乌工口全彩肉肉无遮挡18_欧美日韩一级黄色影院_亚洲阿v天堂一区二区三区_四虎4hu影库免费永久国产_精品国产三级a v在线

English name: 3,4-Dimethoxybenzaldehyde

Alias: Veratraldehyde; 3,4-dimethoxybenzaldehhyde; 3,4-dimethoxy-benzaldehyd; 4-O-Methylvanillin; Benzaldehyde, 3,4-dimethoxy-veratraldehyde; Protocatechuecaldehyde dimethyl ether; protocatechuecaldehydedimethylether; p-Veratric aldehyde; p-veratricaldehyde; VARATRALDEHYDE; 3,4-Dimethoxy benzaldehyde

Molecular formula: C₉H₁₀O₃

Molecular weight: 166.2

Appearance: white or light yellow crystals

CAS NO.: 120-14-9

Quality indicators:

Content: 99%
Melting point: 41-44°C
Appearance: white or light yellow crystals
Acid content %: ≤0.50
Organic volatile%: ≤0.10
High-boiling residues%: ≤0.40

Packaging: 25KG fiber can

To use: It is used in the pharmaceutical industry for the synthesis of the drug methyldopa, and also for the production of the veterinary drug sulfanilamide synergist didibacterin.