2,2,4,4,10,10,12,12,15,15-decamethylspiro<1.5.3.5>heptasila-7,14,16,-triaza-1,3,5,9,11,13-hexaoxane is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 131967-52-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,9,6 and 7 respectively; the second part has 2 digits, 5 and 2 respectively. Calculate Digit Verification of CAS Registry Number 131967-52: (8*1)+(7*3)+(6*1)+(5*9)+(4*6)+(3*7)+(2*5)+(1*2)=137 137 % 10 = 7 So 131967-52-7 is a valid CAS Registry Number.