Neotest 250 is a veterinarian grade brand of the single large ester Testosterone Decanoate compound. Testosterone Decanoate is one of the larger single ester testosterone compounds available, but on the pharmaceutical market it is only found in testosterone blends. Testosterone Decanoate is most commonly found in compounds like Sustanon 250 and in the modern day mixture of Omnadren. The Neotest 250 veterinarian brand is no longer available.