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764661-22-5

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764661-22-5 Usage

Chemical Properties

Pale Yellow Solid

Uses

(R,S)-1-Methyl-3-nicotinoylpyrrolidone-d4 is used in the preparation of tobacco-specific nitrosamines and their metabolites.

Check Digit Verification of cas no

The CAS Registry Mumber 764661-22-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,6,4,6,6 and 1 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 764661-22:
(8*7)+(7*6)+(6*4)+(5*6)+(4*6)+(3*1)+(2*2)+(1*2)=185
185 % 10 = 5
So 764661-22-5 is a valid CAS Registry Number.

764661-22-5Downstream Products

764661-22-5Relevant articles and documents

Syntheses of isotope-labeled tobacco-specific nitrosamines and their metabolites

Desai, Dhimant,Krzeminski, Jacek,El-Bayoumy, Karam,Amin, Shantu

, p. 226 - 230 (2008/12/20)

We report here on the syntheses of three deuterium-labeled tobacco-specific nitrosamines namely [2,4,5,6-d4]nitroso-nornicotine([2,4,5,6-d 4]NNN), 4-(methylnitrosamino)-1-(3-[2,4,5,6-d4]pyridyl)-1- butanone ([2,4,5,6-d4]NNK), and 4-(methyl-nitrosamino)-1-(3-[2,4,5,6- d4]pyridyl)-1-butanol ([2,4,5,6-d4]NNAL). A metabolite of NNK and myosmine, 4-hydroxy-1-(3-[2,4,5,6-d4]pyridyl)-1-butanone, was also synthesized. The synthetic strategy reported here is similar to that reported in the literature for the preparation of corresponding unlabeled compounds. The commercially available [2,4,5,6-d4]ethylnicotinate was used as starting material. During the course of these syntheses [2,4,5,6-d 4]myosmme and [2,4,5,6-d4]nornicotine were obtained as stable intermediates. These isotope-labeled compounds are useful internal standards for quantification of TSNA and their metabolites in smokers in molecular epidemiological studies. Copyright

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