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19519-68-7

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19519-68-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 19519-68-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,5,1 and 9 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 19519-68:
(7*1)+(6*9)+(5*5)+(4*1)+(3*9)+(2*6)+(1*8)=137
137 % 10 = 7
So 19519-68-7 is a valid CAS Registry Number.

19519-68-7Downstream Products

19519-68-7Relevant articles and documents

Control of Regioselectivity in the Addition of Sulphenyl Chlorides to 3,3-Dimethylbutyne (t-Butylacetylene) as a Method for Differential Functionalization of Triple Bonds

Capozzi, Giuseppe,Caristi, Corrado,Lucchini, Vittorio,Modena, Giorgio

, p. 2197 - 2202 (2007/10/02)

Methanesulphenyl chloride and toluene-p-sulphenyl chloride react with 3,3-dimethylbutyne to give regio- and stereo-specifically (E)-1-chloro-3,3-dimethyl-2-methylthiobut-1-ene (3a) and (E)-1-chloro-3,3-dimethyl-2-p-tolylthiobut-1-ene (3b). trans-cis-Acid-

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