If the chromic acid oxidation is performed with stoichiometric oxidant in the presence of diethyl ether as co-solvent (a method introduced by H.C. Brown), the epimerization of l-menthone to d-isomenthone is largely avoided.
Apple cider vinegar isn't likely to be effective for weight loss. Proponents of the apple cider vinegar diet claim that drinking a small amount of apple cider vinegar before meals or taking an apple cider vinegar supplement helps curb appetite and burn fat. However, there's little scientific support for these claims.
You just need to add 1-2 tbsp. of apple cider to your daily juice or water. In this way, you may find it a little easier to swallow together with honey. An apple cider has a bad taste, especially to people who are not fond of sour drinks, but apple cider really works. You just have to take apple cider every four hours then, you will feel the result faster than you expect. Mix your apple cider with lukewarm water and gargle. Drink lots of water.