???? ???? ???? ???? ????? ??? ? ???? ? ??? ???? ?????????? ?? ?????????? ???????????? ??? ???? ????????? ?????? ?????? ??????? ?????? ??? ???? ? ???? ????? ??? ???? ???.??? ???? ??? ?? ?????? ???? ???? ??? ?? ???? ????? ???? ???? ?????? ???????alpha: Bunsen solubility coefficient; first in a sequence; particular rotation term; large chain class