"3,9-Bis-(4-methylsulfanyl-phenoxy)-2,4,8,10-tetraoxa-3,9-diphospha-spiro[5.5]undecane 3,9-disulfide" is a complex organic compound with the molecular formula C20H24O4P2S4. It features a spiro[5.5]undecane core, which is a cyclic structure with five carbon atoms in one ring and five in another, connected at a single point. The compound is characterized by two phosphorus atoms that are part of the spiro structure, and two disulfide bridges (S-S) connecting the two phenoxy groups. Each phenoxy group is attached to a 4-methylsulfanyl-phenyl ring, which contributes to the compound's sulfur-containing nature. This molecule is an example of a phosphorus-containing heterocycle with sulfur atoms, which can have various applications in chemistry, such as in the synthesis of pharmaceuticals or as a ligand in coordination chemistry.
The CAS Registry Mumber 5548-35-6 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 5,5,4 and 8 respectively; the second part has 2 digits, 3 and 5 respectively. Calculate Digit Verification of CAS Registry Number 5548-35: (6*5)+(5*5)+(4*4)+(3*8)+(2*3)+(1*5)=106 106 % 10 = 6 So 5548-35-6 is a valid CAS Registry Number.