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1453810-07-5

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1453810-07-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1453810-07-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,5,3,8,1 and 0 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1453810-07:
(9*1)+(8*4)+(7*5)+(6*3)+(5*8)+(4*1)+(3*0)+(2*0)+(1*7)=145
145 % 10 = 5
So 1453810-07-5 is a valid CAS Registry Number.

1453810-07-5Relevant articles and documents

Synthesis of 4-trifluoromethylpyridines by [5+1] cyclization of 3-hydroxy-pent-4-yn-1-ones with urea

Iaroshenko, Viktor O.,Ostrovskyi, Dmytro,Ayub, Khurshid,Spannenberg, Anke,Langer, Peter

supporting information, p. 576 - 588 (2013/05/09)

Trifluoromethyl-substituted 1,3-diketones can undergo direct alkynylation reactions which are not possible for alkyl- or aryl-substituted derivatives. The products can be easily transformed into 2,6-diaryl-4-trifluoromethylpyridines by acid-mediated [5+1] cyclization with urea. The reaction was thoroughly optimized by variation of the conditions and the scope was studied in detail. The products are not readily available by other methods. A plausible mechanism was suggested based on DFT calculations.

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