1,2,3,6-Tetrahydro-1-ethyl-5-phenylpyridine hydrochloride 109904-51-0 CRL 41124 N-Ethyl-3-phenyl-1,2,5,6-tetrahydropyridine hydrochloride Pyridine, 1,2,3,6-tetrahydro-1-ethyl-5-phenyl-, hydrochloride