(8R,9S,10R,13S,14S,17S)-3-Ethylsulfanyl-10,13-dimethyl-2,3,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthrene-3,17-diol is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 77503-09-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,5,0 and 3 respectively; the second part has 2 digits, 0 and 9 respectively. Calculate Digit Verification of CAS Registry Number 77503-09: (7*7)+(6*7)+(5*5)+(4*0)+(3*3)+(2*0)+(1*9)=134 134 % 10 = 4 So 77503-09-4 is a valid CAS Registry Number.
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