135449-19-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 135449-19-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,5,4,4 and 9 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 135449-19:
(8*1)+(7*3)+(6*5)+(5*4)+(4*4)+(3*9)+(2*1)+(1*9)=133
133 % 10 = 3
So 135449-19-3 is a valid CAS Registry Number.
135449-19-3Relevant academic research and scientific papers
New Synthesis of 2(1H)-Pyridone Derivatives
Cocco, Maria Teresa,Congiu, Cenzo,Maccioni, Antonio,Onnis, Valentina
, p. 1631 - 1634 (2007/10/02)
The reaction of N'-acyl-2-ethoxycarbonylacetamidrazones 1 with diethyl ethoxymethylenemalonate (EMME) is reported.By refluxing equimolecular amounts of 1 and EMME in DMSO/toluene (or ethanol) solution, the 1-acylamino-2(1H)-pyridones 2 were obtained in go
