808-89-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 808-89-9 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 8,0 and 8 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 808-89:
(5*8)+(4*0)+(3*8)+(2*8)+(1*9)=89
89 % 10 = 9
So 808-89-9 is a valid CAS Registry Number.
808-89-9Relevant articles and documents
Synthesis of gon-4-enes
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, (2008/06/13)
1. A therapeutic composition having progestational activity comprising as active ingredient a 17-aliphatic carboxylic acid ester of 17α-ethynyl-18-methyl-19-nortestosterone and a pharmaceutical carrier for said compound.