5β-bromo-2,3,3aβ,5,6,7,8,8a,9,9aβ-decahydro-8aβ-methyl-2-oxonaphtho<2,3-b>furan-3-carboxylic acid methyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 69841-25-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,9,8,4 and 1 respectively; the second part has 2 digits, 2 and 5 respectively. Calculate Digit Verification of CAS Registry Number 69841-25: (7*6)+(6*9)+(5*8)+(4*4)+(3*1)+(2*2)+(1*5)=164 164 % 10 = 4 So 69841-25-4 is a valid CAS Registry Number.