176683-50-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 176683-50-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,6,6,8 and 3 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 176683-50:
(8*1)+(7*7)+(6*6)+(5*6)+(4*8)+(3*3)+(2*5)+(1*0)=174
174 % 10 = 4
So 176683-50-4 is a valid CAS Registry Number.
176683-50-4Relevant academic research and scientific papers
Ring closure of 4-azido-3-formyl-(or acetyl-)2-pyridones to isoxazolo[4,3-c]pyridones
Khattab, Ahmed F.
, p. 393 - 395 (2007/10/03)
Azidation of the chlor aldehyde 2, which was obtained from the 4-hydroxy-2-pyridone 1, afforded the ring-closed isoxazolopyridone 3. Thermolysis of the 3-acetyl-4-azido-2-pyridone 8, which was obtained from the corresponding 4-tosyloxy derivative 7, affor
