5-(2,3,5,6,8,9,11,12,14,15-decahydro-1,4,7,10,13,16-benzohexaoxacyclooctadecin-18-yl)-2,3-pyrazinedicarbonitrile is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 103720-97-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,3,7,2 and 0 respectively; the second part has 2 digits, 9 and 7 respectively. Calculate Digit Verification of CAS Registry Number 103720-97: (8*1)+(7*0)+(6*3)+(5*7)+(4*2)+(3*0)+(2*9)+(1*7)=94 94 % 10 = 4 So 103720-97-4 is a valid CAS Registry Number.