1,8,9,10,11,11-hexachloro-2,3-7,6-endotricyclo[6.2.1.02,7]undeca-4,9-diene is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 26309-05-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,6,3,0 and 9 respectively; the second part has 2 digits, 0 and 5 respectively. Calculate Digit Verification of CAS Registry Number 26309-05: (7*2)+(6*6)+(5*3)+(4*0)+(3*9)+(2*0)+(1*5)=97 97 % 10 = 7 So 26309-05-7 is a valid CAS Registry Number.