(loanword) purine; a heterocyclic organic compound that forms colorless crystals and is a key component of nucleic acids

xanthine; a chemical compound found in most body tissues and fluids

A nitrogen-containing base that is a component of nucleotides; in DNA it pairs with [[胸腺嘧啶|胸腺嘧啶|xiong1 xian4 mi4 ding4]] and in RNA it pairs with [[尿嘧啶|尿嘧啶|niao4 mi4 ding4]]

A nitrogen base found in DNA and RNA that pairs with [[胞嘧啶|胞嘧啶|bao1 mi4 ding4]]; abbreviated from [[鸟粪嘌呤|鳥糞嘌呤|niao3 fen4 piao4 ling4]]

a compound that provides energy for many biochemical processes in all living cells

one of the four main nucleobases found in DNA and RNA, also known by a more common shortened name