国产69久久精品成人看,九九精品视频在线播放,欧美亚洲国产第一精品久久下载,国产末成年女av片

Key products
Products
N-(4-Pyridylmethyl)ethylamine；4-(Ethylaminomethyl)pyridine
Name:           N-(4-Pyridylmethyl)ethylamine；4-(Ethylaminomethyl)pyridine
CAS No:           33403-97-3

Appearance: Yellow to light brown liquid

Assay: 98.0% min.

Water: 0.5% max.
【Back】