(+-)-3-(2-Thienyl)-2-piperazinone 85606-97-9 86696-86-8 CAS 997 Piperazinone, 3-(2-thienyl)- Piperazinone, 3-(2-thienyl)-, (+-)- Tenilsetam Tenilsetam [INN] Tenilsetamum [Latin]