chemical name: dl-2,5,7,8-tetramethyl-2-(4,8,12-trimethyltridecy) chromanol-6-nicotinic formula: c 35 h 53 no 2 molecular weight: 535.01 specification: jp/ medicinal standards of state drug administration of china description: white or yellowish-white wax-fat crystals, with slight special odor, readily decomposing when exposed to light. package: 15kg net in fiber durm, which is lined with polyethylene bag.