2-methyl-4-(2,3,5,6,8,9,11,12-octahydro-1,4,7,10,13-pentaoxabenzocyclopentadecen-15-yl)but-3-yn-2-ol is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 218964-85-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,8,9,6 and 4 respectively; the second part has 2 digits, 8 and 5 respectively. Calculate Digit Verification of CAS Registry Number 218964-85: (8*2)+(7*1)+(6*8)+(5*9)+(4*6)+(3*4)+(2*8)+(1*5)=173 173 % 10 = 3 So 218964-85-3 is a valid CAS Registry Number.