2-Cyanoethyl 3-oxobutanoate

2-Cyanoethyl 3-oxobutanoate (CAS 65193-87-5), also known as 2-cyanoacetoacetate ethyl ester, is an intermediate used in the synthesis of felodipine-d3, a labeled dihydropyridine calcium channel blocker. It is manufactured directly by Shanghai Lizhuo Pharmaceutical Technology Co. to Chinese Pharmacopoeia (ChP) standards, with samples available for distribution across Asia, North America, Europe, Australasia, the Middle East, and Africa.