204840-37-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 204840-37-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,4,8,4 and 0 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 204840-37:
(8*2)+(7*0)+(6*4)+(5*8)+(4*4)+(3*0)+(2*3)+(1*7)=109
109 % 10 = 9
So 204840-37-9 is a valid CAS Registry Number.
204840-37-9Relevant academic research and scientific papers
Morphinan hydroxamic acid compounds
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, (2008/06/13)
This invention provides a compound of the following formula: STR1 and the pharmaceutically acceptable salts thereof, wherein R is hydrogen, C1 -C5 alkyl or an O-protecting group; B is a dircet bond, C1 -C5 alkyl
