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.
It works mainly by stimulating hydrochloric acid (HCl) in the stomach, which is responsible for breaking down foods. It also acts as detox & improves bowel irregularity by removing toxins. Mix 1-2 Tbsp of apple cider vinegar in a glass of warm water and drink before meals that are likely to produce gas. The acids in apple cider vinegar can damage tooth enamel overtime, so always dilute it in water and rinse your mouth after drinking it, alternatively drink diluted apple cider vinegar through a straw.