| Answer | Crossword Clue |
|---|---|
| propanoic | as in propanoic acid, a colourless carboxylic acid also PROPIONIC |
| propionic | as in propionic acid, a former name of propanoic acid also PROPANOIC |
| propenoic | as in propenoic acid, a colourless carboxylic acid |
| crotonic | as in crotonic acid, a colourless acid |
| glutaminic | as in glutamic acid, an important amino acid, a constituent of most proteins also GLUTAMIC |
| pelargonic | as in pelargonic acid, an oily fatty acid, obtained esp from the leaves of plants of the Pelargonium genus (also called nonanoic acid) |
