thialdine

from The Century Dictionary.

• noun A colorless compound, prepared by the action of hydrogen sulphid on aldehyde ammonia. It forms monoclinic crystals melting at 43° C.

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

• noun (Chem.) A weak nitrogenous sulphur base, C6H13NS2.

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

• noun organic chemistry A heterocyclic base 5,6-dihydro-2,4,6-trimethyl-4H-1,3,5-dithiazine, that occurs in the aroma of cooked meat.