2-methoxy-1,2,6,7-tetrahydro-8H-indeno[5,4-b]furan-8-one is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 1290145-09-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,9,0,1,4 and 5 respectively; the second part has 2 digits, 0 and 9 respectively. Calculate Digit Verification of CAS Registry Number 1290145-09: (9*1)+(8*2)+(7*9)+(6*0)+(5*1)+(4*4)+(3*5)+(2*0)+(1*9)=133 133 % 10 = 3 So 1290145-09-3 is a valid CAS Registry Number.