Alright kids.......I am a biochemist, so here is the skinny. The difference between methamphetamine and say adderall is merely a change in 2 carbon bonds in the molecule. The difference between heroin and oxicontin is again ONE chemical bond. Saying that deca and eq are the same thing is nothing short of rediculous. All it takes is one chemical bond to be different and you have a completely diferent compund with different boiling points, vaporization temp, etc. This includes absorbtion and its effects on the body. Although the attached esters might be similar, the "parent" compunds are very different. end of chemistry lesson.