2,4,6,8-Tetrakis(pentafluorphenyl)-cyclo(1,3,5,7-tetrathia-2,4,6,8-tetraarsan) is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 17841-87-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,7,8,4 and 1 respectively; the second part has 2 digits, 8 and 7 respectively. Calculate Digit Verification of CAS Registry Number 17841-87: (7*1)+(6*7)+(5*8)+(4*4)+(3*1)+(2*8)+(1*7)=131 131 % 10 = 1 So 17841-87-1 is a valid CAS Registry Number.