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71602-54-5

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71602-54-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 71602-54-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,6,0 and 2 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 71602-54:
(7*7)+(6*1)+(5*6)+(4*0)+(3*2)+(2*5)+(1*4)=105
105 % 10 = 5
So 71602-54-5 is a valid CAS Registry Number.

71602-54-5Downstream Products

71602-54-5Relevant articles and documents

Polyhalogenoaromatic Compounds. Part 44. Reactions of Enamines with Polyhalogenopyridines and their N-Oxides

Suschitzky, Hans,Wakefield, Basil J.,Whitten, Jeffrey P.

, p. 2709 - 2716 (2007/10/02)

1-Dialkylaminocyclohexenes were readily C-arylated by pentafluoropyridine or 3,5-dichlorotrifluoropyridine but pentachloropyridine was much less reactive.The resulting (tetrahalogenopyridyl)enamines did not cyclise on heating except in the case of compound (10), which gave the heterocycle (16). 1-Dialkylaminocycloalkenes and other enamines were C-arylated by pentachloropyridine N-oxide.In the cases of the dialkylaminocyclo-hexenes and -heptenes the expected pyridylenamines were accompanied by 1-(tetrachloro-2-pyridyl)cyclo-pentene and -hexene, respectively.A mechanism for the ring-contraction leading to the pyridylcycloalkenes is proposed involving a novel elimination of an N-formyldialkylamine.

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