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15965-42-1

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15965-42-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 15965-42-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,5,9,6 and 5 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 15965-42:
(7*1)+(6*5)+(5*9)+(4*6)+(3*5)+(2*4)+(1*2)=131
131 % 10 = 1
So 15965-42-1 is a valid CAS Registry Number.

15965-42-1Relevant articles and documents

Cycloaddition Reaction of 1,4,2-Dithiazole-5-thiones

Greig, Derek J.,McPherson, Michael,Paton, Michael R.,Crosby, John

, p. 1205 - 1208 (2007/10/02)

1,4,2-Dithiazole-5-thiones can act either as the 2-atom or the 3-atom component in 2+3-cycloadditions.Benzonitrile N-phenylimine, generated in situ by dehydrochlorination of N-phenylbenzohydrazonoyl chloride, reacts at the exocyclic C=S double bond forming the thiadiazolethione (17) and the spiro compound (18) by collapse of the initial cycloadduct (19) and further 1,3-dipolar cycloaddition.The corresponding reaction with ethyl azidoformate yields a 5-ethoxycarbonylimino-1,4,2-dithiazole.On treatment-with dimethyl acetylenedicarboxylate and ethylcyanoformate the dithiazolethione itself acts as a 1,3-dipole forming 1,3-dithiole and 1,4,2-dithiazolethiones with expulsion of a nitrile fragment.

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