(2E,6E,10E,14E)-1-Bromo-3,6,11,15,19-pentamethyl-icosa-2,6,10,14,18-pentaene is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 784182-84-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,8,4,1,8 and 2 respectively; the second part has 2 digits, 8 and 4 respectively. Calculate Digit Verification of CAS Registry Number 784182-84: (8*7)+(7*8)+(6*4)+(5*1)+(4*8)+(3*2)+(2*8)+(1*4)=199 199 % 10 = 9 So 784182-84-9 is a valid CAS Registry Number.