3H-Thiazolo(3,4-a)pyrazine-5,8-dione, tetrahydro-7-(phenylmethyl)- 7-Benzylthiazolidino(3,4-a)piperazine-5,8-dione 95110-30-8 Tetrahydro-7-(phenylmethyl)-3H-thiazolo(3,4-a)pyrazine-5,8-dione