874783-28-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 874783-28-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,7,4,7,8 and 3 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 874783-28:
(8*8)+(7*7)+(6*4)+(5*7)+(4*8)+(3*3)+(2*2)+(1*8)=225
225 % 10 = 5
So 874783-28-5 is a valid CAS Registry Number.
874783-28-5Relevant academic research and scientific papers
Cyclization of 1-hydroxy-2-(oxoalkynyl)anthraquinones
Mzhelskaya,Ivanchikova,Polyakov,Moroz,Shvartsberg
, p. 2798 - 2804 (2007/10/03)
Procedures were developed for the heterocyclization of 2-benzoylethynyl-1- hydroxy-and 1-hydroxy-2-(1-oxo-3-phenylpropynyl)anthraquinone. The regioselective preparation of 2-substituted anthra[1,2-b]pyran-4,7,12-triones was demonstrated to be possible und
