(+-)-Dihydro-3-amino-2(3H)-thiophenone hydrochloride 2(3H)-Thiophenone, dihydro-3-amino-, hydrochloride, (+-)- 6038-19-3 D,L-Homocysteine thiolactone hydrochloride D,L-Homocysteinthiolakton chlorid [German] DL-Homocysteine thiolactone hydrochloride EINECS 227-923-3 HCTL hydrochloride