N,N′-Dimethylthiourea534-13-4100 % similar 4-Methyl-3-thiosemicarbazide6610-29-352 % similar Dimethylurea96-31-142 % similar N-Methyl-N′-phenylthiourea2724-69-841 % similar 1-Benzyl-3-methyl-2-thiourea2740-94-538 % similar Methylthiourea598-52-733 % similar Trimethylthiourea2489-77-231 % similar