5b,6,11,11a-tetraphenyl-5b,6,11,11a-tetrahydro-6,11-epioxido-naphtho[2',3':3,4]cyclobuta[1,2-b]quinoline is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 66809-69-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,6,8,0 and 9 respectively; the second part has 2 digits, 6 and 9 respectively. Calculate Digit Verification of CAS Registry Number 66809-69: (7*6)+(6*6)+(5*8)+(4*0)+(3*9)+(2*6)+(1*9)=166 166 % 10 = 6 So 66809-69-6 is a valid CAS Registry Number.