test e is testosterone while 1 andro (1-test) very different...first off all test is king, no arguing that. If you look at the molecular structure test has a double bond at the 4 position while 1 andro, well you guessed it has it at the 1 position
test
View attachment 45820
1 andro
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the double bond is the little dash inside the first hexagon. the 1 position starts at the top of hexagon and goes to 4th position counter clockwise to 4th position at bottom of the 1st hexagon.
the double at the 1 i believe helps it resist liver breakdown