title: Is maleic hydrazide a pyrimidine or purine analogue?
mesh_terms: D006834:Hydrazines; D006860:Hydrogen Bonding; D008298:Maleates; D011687:Purines; D011743:Pyrimidines
chemical_list: D006834:Hydrazines; D008298:Maleates; D011687:Purines; D011743:Pyrimidines