1-benzoyl-3-butyl-1,2,3,4,5,6,7,8-octahydro-benzo[4,5]thieno[2,3-d]pyrimidine is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 57262-76-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,2,6 and 2 respectively; the second part has 2 digits, 7 and 6 respectively. Calculate Digit Verification of CAS Registry Number 57262-76: (7*5)+(6*7)+(5*2)+(4*6)+(3*2)+(2*7)+(1*6)=137 137 % 10 = 7 So 57262-76-7 is a valid CAS Registry Number.