83984-86-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 83984-86-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,9,8 and 4 respectively; the second part has 2 digits, 8 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 83984-86:
(7*8)+(6*3)+(5*9)+(4*8)+(3*4)+(2*8)+(1*6)=185
185 % 10 = 5
So 83984-86-5 is a valid CAS Registry Number.
83984-86-5Relevant academic research and scientific papers
Further syntheses of cyproterone acetate
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Page/Page column title page; 16; 25; 28; 30; 32, (2010/02/07)
The present invention relates to improved methods for synthesising cyproterone acetate (17α-Acetoxy-6-chloro-1α, 2α-methylene-4,6-pregnadiene-3,20-dione) from solasodine. The methods of the invention are shorter as those of the prior art and therefore more economic.