((8R,9S,13S,14S)-13-Methyl-17-oxo-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-3-yl)-methanesulfonic acid 2,2-dimethyl-propyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 237390-55-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,3,7,3,9 and 0 respectively; the second part has 2 digits, 5 and 5 respectively. Calculate Digit Verification of CAS Registry Number 237390-55: (8*2)+(7*3)+(6*7)+(5*3)+(4*9)+(3*0)+(2*5)+(1*5)=145 145 % 10 = 5 So 237390-55-5 is a valid CAS Registry Number.
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