出典:Wikipedia
出典:『Wikipedia』 (2011/06/07 02:06 UTC 版)
Esters are chemical compounds derived by reacting an oxoacid with a hydroxyl compound such as an alcohol or phenol. Esters are usually derived from an inorganic acid or organic acid in which at least one -OH (hydroxyl) group is replaced by an -O-alkyl (alkoxy) group, and most commonly from carboxylic acids and alcohols. That is, esters are formed by condensing an acid with an alcohol.
ハジロオオシギ
a silkworm
昨晩.
a syphilitic (patient)
むら
a village
to speak with a provincial accent
a rope