A heterocyclic organic compound containing nitrogen; a colorless crystal with a pungent odor used to manufacture medicines

A colorless or pale yellow liquid organic compound with a strong unpleasant odor, used as a solvent and chemical reagent

piperidine; a chemical compound consisting of a six-membered ring with five carbon atoms and one nitrogen atom

cytosine (C); a nitrogenous base that pairs with [[鸟嘌呤|鳥嘌呤|niao3 piao4 ling4]] in DNA and RNA (sometimes also used to refer to the nucleoside or nucleotide)

uracil; a chemical base that pairs with [[腺嘌呤|腺嘌呤|xian4 piao4 ling4]] in RNA

A chemical compound used as a topical antiseptic or as an injectable treatment for certain lymphatic infections. The first two characters are a phonetic transcription of the English word "acridine".

(loanword) azetidine, a heterocyclic organic compound used in chemistry

acridine; an organic compound used as an antiseptic and disinfectant

pethidine, also known as meperidine or Demerol; an opioid pain medication

aminoacridine or aminacrine; used as an antiseptic and disinfectant

a pyrimidine nucleobase (T) that pairs with [[腺嘌呤|腺嘌呤|xian4 piao4 ling4]] in DNA