4-(2,3,4,5,6,7-Hexachloro-cyclohepta-2,4,6-trienylidene)-cyclohexa-2,5-dienone is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 39148-65-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,9,1,4 and 8 respectively; the second part has 2 digits, 6 and 5 respectively. Calculate Digit Verification of CAS Registry Number 39148-65: (7*3)+(6*9)+(5*1)+(4*4)+(3*8)+(2*6)+(1*5)=137 137 % 10 = 7 So 39148-65-7 is a valid CAS Registry Number.