N-(Pentachlor-phenyl)-2,4,5-trichlor-benzolsulfonsaeureamid, also known as pentachlorophenyl 2,4,5-trichlorobenzenesulfonamide, is a complex organic compound with the chemical formula C12H3Cl7NO2S. N-(Pentachlor-phenyl)-2,4,5-trichlor-benzolsulfonsaeureamid is characterized by the presence of a pentachlorophenyl group attached to a 2,4,5-trichlorobenzenesulfonamide moiety. It is a white crystalline solid with a high degree of chlorination, which contributes to its chemical stability and resistance to degradation. Due to its chemical structure, it has been historically used as a fungicide and wood preservative, although its use has been restricted or banned in many countries due to environmental and health concerns associated with its persistence and toxicity.
The CAS Registry Mumber 4864-66-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,8,6 and 4 respectively; the second part has 2 digits, 6 and 6 respectively. Calculate Digit Verification of CAS Registry Number 4864-66: (6*4)+(5*8)+(4*6)+(3*4)+(2*6)+(1*6)=118 118 % 10 = 8 So 4864-66-8 is a valid CAS Registry Number.