妓院一钑片免看黄大片,亚洲av无码成人精品国产,亚洲AV综合色区无码专区桃色,免费A级毛片在线播放不收费

Ark Pharm  
Ark Pharm是一家2007年建立、總部坐落于美國芝加哥的化學高科技公司，專注于雜環類產品的研發和生產，產品線包括雜環類化合物，硼酸及其衍生物，有機模塊產品和手型切塊產品，產品種類已達 50000種，現貨產品已超過20000種，約4,000種為獨有產品。

Ark Pharm, Inc. is a leading supplier of building blocks, scaffolds and other advanced intermediates.

We provide various heterocycles including azetidines, indoles, imidazoles, pyrazines, pyrazoles, pyridazines, pyridines, pyrimidines, piperazines, piperidines, pyrrolidines, thiazoles and triazoles.

Ark Pharm has about 20,000 compounds in stock. New products are constantly added to our catalog. You can find our products by Searching with Keywords, or by Structure.

Besides our catalog building blocks, our services include the synthesis and development of medicinal novel building blocks, novel templates, reference standard compounds, impurities, by-products and other organic intermediates.