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140669-99-4

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140669-99-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 140669-99-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,0,6,6 and 9 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 140669-99:
(8*1)+(7*4)+(6*0)+(5*6)+(4*6)+(3*9)+(2*9)+(1*9)=144
144 % 10 = 4
So 140669-99-4 is a valid CAS Registry Number.

140669-99-4Downstream Products

140669-99-4Relevant articles and documents

Photolytic and Chromium(II)-Promoted Addition Reactions of N-Halogenoformamides with Alkenes

Goosen, Andre,McCleland, Cedric W.,Merrifield, Alan J.

, p. 627 - 632 (2007/10/02)

Formamidyl radicals (HCONR) do not intramolecularly abstract hydrogen or cyclise onto aromatic rings, but do add intermolecularly to alkenes.The photolytic addition of N-halogenoformamides to alkenes is inhibited by N-alkylation.However, N-alkyl-N-halogenoformamides add to alkenes in the presence of chromium(II) species.The addition of N-halogenoformamides to alkenes occurs regiospecifically with formamidyl bonding to the less substituted terminus of the alkene.The adducts obtained from N-alkylformamidyls exist as mixtures of rotameric isomers whose configurations have been assigned.The reactivity of the formamidyl radical has been discussed in terms of its conformation and electron state.

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