19520-22-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 19520-22-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,5,2 and 0 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 19520-22:
(7*1)+(6*9)+(5*5)+(4*2)+(3*0)+(2*2)+(1*2)=100
100 % 10 = 0
So 19520-22-0 is a valid CAS Registry Number.
19520-22-0Relevant academic research and scientific papers
Synthesis and Reaction of Methylbenzoquinolizinium Salts
Arai, Sadao,Yamazaki, Masuo,Hida, Mitsuhiko
, p. 1073 - 1078 (2007/10/02)
All isomers of (monomethyl)benzoquinolizinium salts including five new monomethyl derivatives were prepared by photocyclization, sulfur extrusion, or cyclodehydration reaction, and their aldol-type condensation was examined.The 2- and 4-methyl derivati
