90997-20-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 90997-20-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,0,9,9 and 7 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 90997-20:
(7*9)+(6*0)+(5*9)+(4*9)+(3*7)+(2*2)+(1*0)=169
169 % 10 = 9
So 90997-20-9 is a valid CAS Registry Number.
90997-20-9Relevant academic research and scientific papers
Synthesis and Spontaneous Racemization of Benzanthracene 1,2-Oxide
Boyd, Derek R.,Sharma, Narain D.
, p. 839 - 841 (2007/10/02)
Benzanthracene 1,2-oxide (1,2-epoxy-1,2-dihydrobenzanthracene), a minor metabolite of benzanthracene in hepatic systems, has been synthesized both from racemic precursors and from separated diastereoisomeric bromohydrin esters whose absolute ster
