16109-81-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 16109-81-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,6,1,0 and 9 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 16109-81:
(7*1)+(6*6)+(5*1)+(4*0)+(3*9)+(2*8)+(1*1)=92
92 % 10 = 2
So 16109-81-2 is a valid CAS Registry Number.
16109-81-2Relevant academic research and scientific papers
Synthesis of 2-Aryl-7-methylpyranopyran-4(H), 5(H)-diones
Qamar, Y.,Siddiq, M.
, p. 373 (2007/10/02)
3-Cinnamoyl-4-hydroxypyran-2(H)-ones (IIIa-e) on bromination give the corresponding bromo derivatives (IVa-e) in quantitative yields.These bromo derivatives (IVa-e) on heating with pyridine containing few drops of piperidine give 2-aryl-7-methylpyrano4,3
