But according to Time, a recent study that analyzed sodas found that Mexican Coke doesn't seem to contain the compound you find in cane sugar--sucrose. Instead, the bottles seemed to contain glucose and fructose, which show up in high-fructose corn syrup.
Luckily for those of us who've staked our reputations on our Coke snobbery, there may be a possible explanation for the lack of sucrose in Mexican Coke--namely, that the bottles were old and the sucrose had split into the other two compounds. (The researchers also said they didn't analyze enough bottles to come to a firm conclusion.)
"We already provide a Coca-Cola with sugar in the U.S. - is Coca-Cola from Mexico and it's available year round," Greg Galvez, vice president and general manager of Importation and Commercialization, Coca-Cola North America, told Consumerist.