English word ditosyl comes from English di-, English tosyl

Detailed word origin of ditosyl

Dictionary entry	Language	Definition
di-	English (eng)	(uncommon) Alternative form of dis-. Two, twice, or double A form of dia- before a vowel.
tosyl	English (eng)	(organic chemistry, especially in combination) toluenesulfonyl, phenylmethylsulfonyl.
ditosyl	English (eng)	(organic chemistry, in combination) Two tosyl groups in a molecule.

Words with the same origin as ditosyl