免费黄片国产精品,欧美日本少妇久久,久久精品国产国产精品四凭,最新毛片婷婷99精品视频

CAS:366789-02-8

Molecular formula：C19H18ClN3O5S 

Molecular weight：435.88

Appearance: White to quasi-white crystalline powder

Quantity standard: purity: 99.5%, maximum impurity 0.1%, drying weight loss 0.5%, melting point 229-234 C.

Burning residue 0.1%