85175-21-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 85175-21-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,5,1,7 and 5 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 85175-21:
(7*8)+(6*5)+(5*1)+(4*7)+(3*5)+(2*2)+(1*1)=139
139 % 10 = 9
So 85175-21-9 is a valid CAS Registry Number.
85175-21-9Relevant academic research and scientific papers
Pyran Derivatives, 96. - Benzopyranopyrrole and -pyridine Derivatives
Eiden, Fritz,Baumann, Egmont,Lotter, Hermann
, p. 165 - 180 (2007/10/02)
Five- or six-membered ring lactams 1 condense with 2-hydroxybenzoates 2 to yield 2-acyl-4-butane- and -5-pentanelactams 3 which can be converted into the saturated benzopyranopyrrolones and -pyridinones 14 and 23, respectively.The intermediates
