(1S,8S,9S,11R)-3,3,5,5-Tetraisopropyl-2,4,6,10-tetraoxa-3,5-disila-tricyclo[6.4.0.09,11]dodecane is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 117641-43-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,7,6,4 and 1 respectively; the second part has 2 digits, 4 and 3 respectively. Calculate Digit Verification of CAS Registry Number 117641-43: (8*1)+(7*1)+(6*7)+(5*6)+(4*4)+(3*1)+(2*4)+(1*3)=117 117 % 10 = 7 So 117641-43-7 is a valid CAS Registry Number.