How long can an OPENED bottle of Jinro soju last before expiring? Not refrigerated.

Question from a dumb hypochondriac that just took a swig from the bottle i had stored in my backpack from last weekend without thinking. I screwed the cap back on ofc before I put it in my backpack last weekend, and it tasted fine just now. I just realised hey maybe this should’ve been refrigerated? Or at least unopened. It’s been sitting in my backpack in the basement for a week. I tried looking this up online and could only find stuff for alcohols other than a sugary soju, or nothing on specifically alcohol that’s been previously opened and not refrigerated. How long can a previously opened bottle of 13% alcohol soju high in sugar last at room temp before expiring? Am I gonna be good lol?