Board Thread:Theories and Speculation/@comment-45444155-20200802161930

From Orochimaru's own words, we know that he can use senjutsu chakra. From the words Kabuto we know that the enzyme extracted from the body of Jugo allows the accumulation of natural energy, this force became the basis for Curse Mark. That is, it turns out that he has a unique enzyme Jugo in his body, because you can not give others something that you do not own. So it turns out that Orochimaru creates the senjutsu chakra just like Jugo. Simply put, Orochimaru uses Sage Transformation (which is essentially Sage Mode), but because of the inappropriate body, this power is temporary when Kabuto can use it at its full power.

Kabuto never said that Orochimaru couldn't use Sage Mode. He only said that Orochimaru is an imperfect Sage Mode. 