Thiourea, also known as Antu, is an organic compound of carbon, nitrogen, sulfur and hydrogen, with the formula CSN2H4 or (NH2)22CS. It is similar to urea, except that the oxygen atom is replaced by a sulfur atom. The properties of urea and thiourea differ significantly because of the relative electronegativities of sulfur and oxygen. Thiourea is a versatile reagent in organic synthesis.
Umbelliferone or 7-hydroxycoumarin is a widespread natural product of the coumarin family. It occurs in many familiar plants from the Apiaceae (Umbelliferae) family such as carrot, coriander and garden angelica, as well plants from other families such as the mouse-ear hawkweed. It is a yellowish-white crystalline solid which has a slight solubility in hot water, but high solubility in ethanol. It absorbs ultraviolet light strongly at several wavelengths.
Undecanol, also known by its IUPAC name 1-undecanol or undecan-1-ol, and by its trivial names undecyl alcohol and hendecanol, is a fatty alcohol. Undecanol is a colourless, water insoluble liquid of melting point 19 °C and boiling point 243 °C.
Carbamates, or urethanes, are a group of organic compounds sharing a common functional group with the general structure R1-O-(CO)NR2-R3. Carbamates are esters of carbamic acid, NH2COOH, an unstable compound with R1 = R2 = R3 = H. Carbamic acid is an unstable compound because of the lability of the H-groups, leading upon exposure to water to rearrangements that lead to the decomposition to ammonium bicarbonate.