(8S,9S,10R,11S,13S,14S)-10,11,13-Trimethyl-7,8,9,10,11,12,13,14,15,16-decahydro-6H-cyclopenta[a]phenanthrene-3,17-dione is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 64109-71-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,4,1,0 and 9 respectively; the second part has 2 digits, 7 and 1 respectively. Calculate Digit Verification of CAS Registry Number 64109-71: (7*6)+(6*4)+(5*1)+(4*0)+(3*9)+(2*7)+(1*1)=113 113 % 10 = 3 So 64109-71-3 is a valid CAS Registry Number.