sucrol

from The Century Dictionary.

• noun A trade-name for paraphenetol-carbamide, a colorless substance, crystallizing in shining needles, of intensely sweet taste, estimated as 200 times that of cane-sugar, without nutritive value, but used as a sweetening material to disguise the disagreeable taste of medicines. Also known as dulcin or valzin.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun The sweetener dulcin.