title: PTERIDINE STUDIES. XXIX. THE METHYLATION OF 7-AMINO- AND 4,7,DIAMINO-PTERIDINE.
mesh_terms: D000478:Alkylation; D002626:Chemistry, Pharmaceutical; D008745:Methylation; D010604:Pharmacy; D011621:Pteridines; D011622:Pterins; D012106:Research
chemical_list: D011621:Pteridines; D011622:Pterins
keywords: ALKYLATION; CHEMISTRY, PHARMACEUTICAL; EXPERIMENTAL LAB STUDY; PTERINS