text: Disulfide is also used to refer to compounds that contain two sulfide (S) centers. The compound carbon disulfide, CS is described with the structural formula i.e. S=C=S. This molecule is not a disulfide in the sense that it lacks a S-S bond. Similarly, molybdenum disulfide, MoS, is not a disulfide in the sense again that its sulfur atoms are not linked.