1050503-22-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1050503-22-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,5,0,5,0 and 3 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1050503-22:
(9*1)+(8*0)+(7*5)+(6*0)+(5*5)+(4*0)+(3*3)+(2*2)+(1*2)=84
84 % 10 = 4
So 1050503-22-4 is a valid CAS Registry Number.
1050503-22-4Relevant articles and documents
Efficient synthesis of fluoren-9-ones by the palladium-catalyzed annulation of arynes by 2-haloarenecarboxaldehydes
Waldo, Jesse P.,Zhang, Xiaoxia,Shi, Feng,Larock, Richard C.
, p. 6679 - 6685 (2008)
(Chemical Equation Presented) Fluoren-9-ones and derivatives are readily prepared in good yields by the annulation of in situ generated arynes by 2-haloarenecarboxaldehydes in the presence of a palladium catalyst.
