Ark Pharm, Inc. is a leading supplier of building blocks, scaffolds and other advanced intermediates. We provide various hete ... rocycles 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 read more