(8S,9S,11R,13S,14S)-3-Hydroxy-11-methoxy-13-methyl-6,7,8,9,11,12,13,14,15,16-decahydro-cyclopenta[a]phenanthren-17-one is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 40128-90-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,1,2 and 8 respectively; the second part has 2 digits, 9 and 0 respectively. Calculate Digit Verification of CAS Registry Number 40128-90: (7*4)+(6*0)+(5*1)+(4*2)+(3*8)+(2*9)+(1*0)=83 83 % 10 = 3 So 40128-90-3 is a valid CAS Registry Number.