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119541-41-2

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119541-41-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 119541-41-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,9,5,4 and 1 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 119541-41:
(8*1)+(7*1)+(6*9)+(5*5)+(4*4)+(3*1)+(2*4)+(1*1)=122
122 % 10 = 2
So 119541-41-2 is a valid CAS Registry Number.

119541-41-2Relevant articles and documents

THE INVENTION OF RADICAL REACTIONS PART XVIII. A CONVENIENT SOLUTION TO THE 1-CARBON PROBLEM (R-CO2H --> R-13CO2H)

Barton, Derek H. R.,Ozbalik, Nubar,Vacher, Bernard

, p. 3501 - 3512 (1988)

Radicals generated by photolysis (W light) of esters derived from N-hydroxy-2-thiopyridone react with electrophilic isocyanides 2a and (in the presence of trifluoroacetic acid) 2b to give adducts of type 3.Convenient reaction procedures have been worked out to hydrolyse the adducts to amides of type 5, from which the original acid can be regenerated under mild conditions.The three important acids oleic, linoleic and arachidonic have all given smooth reactions.In suitable examples, quantitative evolution of carbon dioxide and incorporation of 13C without dilution have been demonstrated.This reaction sequence will be useful for the labelling in the carboxyl group of prostaglandins, leukotrienes, and the side chain carboxyls of peptides.

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