이 원료는 다음의 구조를 갖는 유기화합물이다.

Cyanocobalamin; Vitamine B12: According to the Office of Dietary Supplements of the National Institutes of Health, naturally occurring vitamin B12 exists in several forms and contains the mineral cobalt, so compounds with vitamin B12 activity are collectively called 'cobalamins'. Cyanocobalamin is a synthetic form of vitamin B12 most commonly found in dietary supplements and prescription medications. Once ingested, cyanocobalamin is converted in the body into active forms of Vitamin B12.

本品は、ビタミンB12であり、次の化学式で表される。