1,1,5,5,-Tetramethyl-3,7-tetraphenyl-1,5-dithia(VI)-3,7-diphosphino-2,4,6,8-tetrazocin is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 25298-53-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,5,2,9 and 8 respectively; the second part has 2 digits, 5 and 3 respectively. Calculate Digit Verification of CAS Registry Number 25298-53: (7*2)+(6*5)+(5*2)+(4*9)+(3*8)+(2*5)+(1*3)=127 127 % 10 = 7 So 25298-53-7 is a valid CAS Registry Number.