(2-(6-Azaspiro(2.5)oct-6-yl)ethyl)guanidine 1-(2-(6-Azaspiro(2.5)oct-6-yl)ethyl)guanidin 144-45-6 EINECS 205-629-6 Espirgetina [INN-Spanish] LD 3598 LD-3598 Spirgetin Spirgetine Spirgetine [DCF:INN] Spirgetinum [INN-Latin]