戊酮

wùtóng
  1. (organic chemistry) pentanone
  2. pentanone

Wiktionary

Entry Composition

1 戊 wù
  1. fifth of the ten Heavenly Stems 十天干 shítiāngān
  2. fifth in order
  3. letter "E" or Roman "V" in list "A, B, C", or "I, II, III" etc
  4. penta
=2 酮 tóng ketone
=2 酮 dòng
  1. (obsolete on its own in Standard Chinese, of alcohol, vinegar) to spoil; to go bad
  2. to spoil; to go bad
=2 酮 chóng
  1. (obsolete on its own in Standard Chinese, of alcohol) to become sour
  2. to become sour