52782-67-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 52782-67-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,2,7,8 and 2 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 52782-67:
(7*5)+(6*2)+(5*7)+(4*8)+(3*2)+(2*6)+(1*7)=139
139 % 10 = 9
So 52782-67-9 is a valid CAS Registry Number.
52782-67-9Relevant articles and documents
Reaction of selenonium ylides with activated acetylenes
Magdesieva, N. N.,Kyandzhetsian, R. A.,Gordeev, M. F.
, p. 2219 - 2227 (2007/10/02)
The reaction of dimethylaroylmethylselenonium bromides with dibenzoylacetylene in the presence of bases leads to the formation of a mixture of 2-aryl-3,5-diaroyl- and 2-aryl-4,5-diaroylfurans.The latter are easily converted into 2,4,7-triarylfuropy
