(3-Hydroxypropyl)guanidine p-nitrobenzoate (ester) hydrochloride 19623-20-2 3-(p-Nitro-benzoyloxy)propylguanidine hydrochloride GUANIDINE, (3-HYDROXYPROPYL)-, p-NITROBENZOATE (ester), MONOHYDROCHLORIDE HM-200