121105-77-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 121105-77-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,1,0 and 5 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 121105-77:
(8*1)+(7*2)+(6*1)+(5*1)+(4*0)+(3*5)+(2*7)+(1*7)=69
69 % 10 = 9
So 121105-77-9 is a valid CAS Registry Number.
InChI:InChI=1/C14H9N3O2/c1-8-9(6-15)13-16-11-4-2-3-5-12(11)17(13)14(19)10(8)7-18/h2-5,7,16H,1H3
121105-77-9Relevant articles and documents
Benzimidazole condensed ring systems. 2 [1]. New synthesis of substituted 1-oxo-1H,5-H-pyrido[1,2-a]benzimidazole-4-carbonitriles and related derivatives
Rida,Soliman,Badawey,Kappe
, p. 1725 - 1728 (2007/10/02)
The synthesis of some 3-substituted and 2,3-disubstituted-1-oxo-1H,5-H-pyrido[1,2-a]benzimidazole-4-carbonitr les 5,6 by fusing 1H-benzimidazole-2-acetonitrile 1 with some β-keto esters 2,4 in the presence of ammonium acetate or with ethyl β-aminocrotonat