111339-55-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 111339-55-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,1,3,3 and 9 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 111339-55:
(8*1)+(7*1)+(6*1)+(5*3)+(4*3)+(3*9)+(2*5)+(1*5)=90
90 % 10 = 0
So 111339-55-0 is a valid CAS Registry Number.
111339-55-0Relevant articles and documents
Quinoxalines. XXIV. Synthesis of 4-Substituted 1,2,3-Triazoloquinoxalines
Vogel, M.,Lippmann, E.
, p. 101 - 107 (2007/10/02)
3-Substituted quinoxaline-2-carbaldehydes 1 react with tosylhydrazide to give 3-substituted quinoxaline-2-carbaldehyde tosylhydrazones 2.The treatment of 2 with a boiling solution of sodium methoxide or ethoxide - the so called Bamford-Stevens reaction -