国产三邦A级一级免费_а∨天堂在线中文免费不卡_放荡的丰满少妇中文字幕_国产a√免费观看

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



?