133390-62-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 133390-62-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,3,3,9 and 0 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 133390-62:
(8*1)+(7*3)+(6*3)+(5*3)+(4*9)+(3*0)+(2*6)+(1*2)=112
112 % 10 = 2
So 133390-62-2 is a valid CAS Registry Number.
133390-62-2Relevant academic research and scientific papers
A facile synthesis of 1,6-naphthyridin-5(6H)-ones
Nishiwaki,Komatsu,Ohshiro
, p. 41 - 42 (2007/10/02)
3-Cyano-2-(phenylethynyl)pyridine (1) was cyclized intramolecularly under acidic conditions to give 1,6-naphthyridin-5(6H)-one (2) and 5H-pyrano[4,3-b]pyridine-5-one (4). Pyranopyridine 4 was readily transformed to 2 or naphthyridinone 9 having an alkyl substituent at 6-position.
