5a,5b,11a,11b-Tetrahydro-5a,11a-dimethyldibenzo[b,h]biphenylene-5,6,11,12-tetrone is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 22738-32-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,2,7,3 and 8 respectively; the second part has 2 digits, 3 and 2 respectively. Calculate Digit Verification of CAS Registry Number 22738-32: (7*2)+(6*2)+(5*7)+(4*3)+(3*8)+(2*3)+(1*2)=105 105 % 10 = 5 So 22738-32-5 is a valid CAS Registry Number.