009127-PX

009127-PX was the serial number for cyclodexione-4, a drug synthesized and used by the UNSC. It was a bipolar-integration drug.

It was one of three drugs injected into the Spartan-III's Gamma Company illegally. Cyclodexione-4, along with miso-olanzapine, were injected to counter the effects of the mutagen drug 009762-OO. However, this drug has to be administered regularly to prevent the mutagen from permanently affecting higher brain functions of the Spartans. If it was not administered regularly, the Spartans would eventually break down mentally, becoming aggresive, irrational, and even psychotic. If that happened, the Spartans would be very dangerous.