BCK

BCK is a Pharmaceutical Grade advanced intermediate referenced to ChP standards. The supplier's description text discusses a company called VitalPharms - a specialist API and intermediate distributor with GSP certification covering antibiotics, cardiovascular, digestive, respiratory, and antitumor products, particularly sartans, omeprazole, cephalosporins, and penems - though the listed supplier name (Zhuhai Enterprises Association for Foreign Economic Cooperation) does not match, so this appears to be boilerplate carried over from another listing and should be treated as background context only rather than confirmed fact about this specific product.