Copulins are short-chain
fatty acids that are produced by the
human female vagina,
as well as the vaginas of other related
primates.
Copulins are
pheromones that have been
experimentally proven to somewhat increase
the
sexual attraction of
males to the
females that
smell of them. The copulins are less
effective than the
steroid pheromones though.
Acetic acid (COOHCH3) is technically not a copulin, but it is often falsely believed
to be one by people in the general
populace. There are 6 different copulin chemicals, which are:
1. propanoic acid aka propionic acid: COOHCH2CH3
2. butanoic acid aka butyric acid: COOH(CH)2CH3
3. 2-methylpropanoic acid aka isobutyric acid: COOHCH2(CH2)CH3
4. pentanoic acid aka valeric acid: COOH(CH2)3CH3
5. 3-methylbutanoic acid aka isovaleric acid: COOHCH2CH2(CH3)CH3
6. hexanoic acid aka caproic acid: COOH(CH2)4CH3
The copulin chemicals smell bad and have been shown to damage mucous membranes when
their concentration in the air is high, or when they are applied directly to mucous membranes in a liquid solution.
Specificly, the copulins smell rancid, sweaty, dairy, and/or goat-like. In fact, the latin word 'caper',
from which caproic acid was named, means 'goat'. Butanoic acid, unlike the other copulins, smells
somewhat fruity.
That means that the copulins are clearly not the chemical(s) of the naturally-occurring human female attractant scent.