免费va人成视频网站全部内容_92极品少妇午夜福利100_AV在线免费在线观看网址_亚洲无码又爽又刺激

2,6-Dichloropyridine

2,6-Dichloropyridine

White or off-white solid or crystal, mainly used in pharmaceuticals, used to prepare triazole and imidazole potassium channel antagonists, as antiarrhythmic drugs



?