国产黄色在线视频,国产精品自在自线视频,亚洲综合激情另类小说区,在线成人一区二区

Pharmaceutical intermediate

Chloroethyl-2-(3-nitrobenzylidene)acetoacetate

Quality standard
Appearance: off-white to light yellow crystalline powder
Melting point:88～95℃ Purity≥99%