USADA does not have a Brazillian page, that's correct, so they have a link to a different reference site that they specifically tell people to use. If you do a search, it doesn't show up on that page. So the place THEY TELL PEOPLE TO CHECK did not have it listed.
USADA is good for the sport, but Machida got screwed pretty badly. The substance he's taking it listed as an anabolic agent because it's related to DHEA, but the 7-keto variety, in scientific studies, has shown no anabolic effects.
So, he got nailed for delcaring that he was taking a substance that was not listed on a reference site they refer Brazillian speakers to, which is on the list for being something that it isn't. 18 months for that does not seem like a punishment that fits the "crime."