1,4,7,13,17,21-hexakis(p-tolylsulfonyl)-1,4,7,13,17,21-hexaaza-10,24-dioxacyclohexacosane is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 110661-81-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,0,6,6 and 1 respectively; the second part has 2 digits, 8 and 1 respectively. Calculate Digit Verification of CAS Registry Number 110661-81: (8*1)+(7*1)+(6*0)+(5*6)+(4*6)+(3*1)+(2*8)+(1*1)=89 89 % 10 = 9 So 110661-81-9 is a valid CAS Registry Number.