(6aR,6bR,12bR,12cR)-6a,6b,12b,12c-Tetrahydro-5,8-dioxa-dibenzo[a,i]biphenylene-6,7-dione is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 89615-28-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,9,6,1 and 5 respectively; the second part has 2 digits, 2 and 8 respectively. Calculate Digit Verification of CAS Registry Number 89615-28: (7*8)+(6*9)+(5*6)+(4*1)+(3*5)+(2*2)+(1*8)=171 171 % 10 = 1 So 89615-28-1 is a valid CAS Registry Number.