743353-98-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 743353-98-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,4,3,3,5 and 3 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 743353-98:
(8*7)+(7*4)+(6*3)+(5*3)+(4*5)+(3*3)+(2*9)+(1*8)=172
172 % 10 = 2
So 743353-98-2 is a valid CAS Registry Number.
743353-98-2Relevant academic research and scientific papers
Facile synthesis of 4-alkyl (and aryl)-2-aryl-6-diazo-4H-thieno[3,2-b] pyridine-5,7-diones
Lee, Dong Joon,Kim, Kyongtae
, p. 4867 - 4869 (2007/10/03)
Treatment of 3-{3-alkyl (and aryl)amino-5-arylthieno-2-yl}-2-diazo-3- oxopropanoates 8 with TMSOTf (3 equiv) in the presence of Et3N (6 equiv) in CH2Cl2 for 1 h at room temperature afforded 4-alkyl (and aryl)-2-aryl-6-diazo-4H-thieno
