1H-Benzimidazole,2-ethenyl-1-methoxy-(9CI) is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 138972-86-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,9,7 and 2 respectively; the second part has 2 digits, 8 and 6 respectively. Calculate Digit Verification of CAS Registry Number 138972-86: (8*1)+(7*3)+(6*8)+(5*9)+(4*7)+(3*2)+(2*8)+(1*6)=178 178 % 10 = 8 So 138972-86-8 is a valid CAS Registry Number.