18921-70-5 Aspartic acid, N-[p-[[(2,4-diamino-5-methyl-6-quinazolinyl)methyl]amino] benzoyl]-, L- L-Aspartic acid, N-[4-[[(2,4-diamino-5-methyl-6-quinazolinyl)methyl]amino] benzoyl]-, Methasquin NSC122870