14904-83-7 19130-99-5 2-Piperidinone, 3,4,5-trihydroxy-6-(hydroxymethyl)-, (3R-(3alpha,4beta,5alpha,6beta))- 3,4,5-Trihydroxy-6-(hydroxymethyl)-2-piperidone 5-Amino-5-deoxy-D-gluconic acid delta-lactam 5-Amino-5-deoxygluconic acid delta-lactam 53776-94-6 Glucono-delta-lactam