Butanaldehyde

Part of speech: noun

Definitions

1. A four-carbon aldehyde compound used in organic synthesis and known for its distinctive almond-like odor; a colorless liquid that acts as a building block in chemical industries; an aldehyde with the formula C4H8O featuring a terminal carbonyl group
2. An organic chemical characterized by a straight-chain aldehyde structure containing four carbon atoms, commonly employed in fragrance and flavor manufacturing; a volatile, colorless fluid with reactivity typical of aldehydes; an aldehyde molecule important in producing various industrial chemicals
3. A molecular substance consisting of a butyl group attached to an aldehyde functional group, utilized as a reagent in organic chemistry and as a scent ingredient; a liquid compound with a pungent smell; a carbonyl-containing compound with four carbons in total

Etymology: Butanaldehyde is a systematic chemical name, built the way chemists name organic compounds by rule rather than by tradition. The "but-" part comes from "butane," the four-carbon alkane, which in turn was named from "butyric acid," the acid that gives rancid butter its smell; "butyric" itself derives from Latin "butyrum," meaning butter, borrowed from Greek "bouturon." The "-al" ending marks an aldehyde, and the "-de" simply joins the two pieces. Because the ending is "-al" rather than a ketone's "-one," the carbonyl group sits at the end of the chain, which is why the compound has exactly four carbons with the oxygen on the terminal one. The name is a modern coinage. The aldehyde class was identified in the 1830s, when Justus von Liebig and Jöns Jacob Berzelius worked on the term, and the systematic naming conventions that produced "butanaldehyde" came with the international chemical nomenclature developed in the late nineteenth and twentieth centuries. Ancient Greeks and Romans knew butter and its sour smell but had no word for this compound.

Synonyms: butyraldehyde, butanal