Fuel Concentrate sample run through a Saturn 2000 GC/MS...?

I am seeing something called "Anti-Knock K33" or "Combustion Improver" or "AK-33K" in the synonyms list for a detected compound for this run. Anyone know what this is?

Answer:
It is seems like a trade name.

Anti-knock type additions are usually highly branched compounds C7 though about C9. You’ve got the right instrument to identify the structure. It should have a nice fragmentation spectra. Work your way back from the parent peak.

Basically they want these things to be alkanes, with no functional groups. Functinal groups cause problems like smog, corrosion or poisoning the catalytic converter. So the sleuthing should be pretty easy.

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