潘金莲被吸乳揉到高潮的视频,久久99久久99精品免观看,在电影院里拨开内裤挺进,护士交换粗吟配乱大交动态图

Apart from selling the samples of unique organic substances, we offer the synthesis of building blocks for "combinatorial chemistry" in amount of up to 100-200 g. You can find some promising structures in our database of building blocks synthesized to order. About 1720 chemical building blocks are available in stock and can be ordered on-line via our store. These compounds are available in multi-gram (1-100 g) quantities (purity =>95%) which make them suitable for high throughput and combinatorial synthesis or scale-up of lead compounds.