An aromatic organic base,C9H7N,having a pungent tarlike odor,synthesized or obtained from coal tar,and used as a food preservative and in making antiseptics and dyes.

• 喹啉，氮（杂）萘一种芳香的有机碱，C9H7N，有一种刺鼻的类似焦油的气味，从煤油中提取或人工合成，用作食品防腐剂，并用在制造防腐剂和染料中。