(p-Phenoxyphenacylidene)hydrazide of 1-piperidineacetic acid hydrochloride 1-Piperidineacetic acid, (p-phenoxyphenacylidene)hydrazide, hydrochloride 5957-02-8 Glyoxal, (p-(phenoxy)phenyl)-, (1-piperidinylacetyl)hydrazone, hydrochloride