sinapoline

from The Century Dictionary.

• noun A colorless compound, CH₂:CH.CH₂NHCONHCH₂CH:CH₂, prepared by the action of lead hydroxid on allyl mustard-oil. It crystallizes in plates, melts at 100° C., and is volatile with steam. Also called ab- or symmetrical diallyl carbamide.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Chem.) A nitrogenous base, CO.(NH.C3H5)2, related to urea, extracted from mustard oil, and also produced artifically, as a white crystalline substance; -- called also diallyl urea.

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

• noun organic chemistry A nitrogenous base, CO.(NH.C3H5)2, related to urea, and extracted from mustard oil; diallyl urea.