(3S,8R,9S,10R,13S,14S,17S)-3,17-Dihydroxy-10,13-dimethyl-17-{(S)-1-[2-(3-methyl-butyl)-[1,3]dioxolan-2-yl]-ethyl}-1,2,3,4,7,8,9,10,11,12,13,14,15,17-tetradecahydro-cyclopenta[a]phenanthren-16-one is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 203987-34-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,3,9,8 and 7 respectively; the second part has 2 digits, 3 and 4 respectively. Calculate Digit Verification of CAS Registry Number 203987-34: (8*2)+(7*0)+(6*3)+(5*9)+(4*8)+(3*7)+(2*3)+(1*4)=142 142 % 10 = 2 So 203987-34-2 is a valid CAS Registry Number.
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