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56042-84-3

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56042-84-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 56042-84-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,6,0,4 and 2 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 56042-84:
(7*5)+(6*6)+(5*0)+(4*4)+(3*2)+(2*8)+(1*4)=113
113 % 10 = 3
So 56042-84-3 is a valid CAS Registry Number.

56042-84-3Downstream Products

56042-84-3Relevant articles and documents

2,1-Benzisothiazoles. XIII . Intermediates and Products in the Sulfur Extrusion Reaction of 2,1-Benzisothiazolines-3(1H)-one. A New Synthesis of 11H-Pyridoquinazolin-11-one ("Pyracridone")

Davis, Michael,Hook, Robert J.,Wu, Wen Yang

, p. 369 - 373 (2007/10/02)

Triethyl phosphite abstracts sulfur from 2,1-benzisothiazolin-3(1H)-one (1); a reaction intermediate is the spirocyclic compound 11, and products include the benzoxazine 6 and polyanthraniloyl compounds.In the presence of pyridine, pyracridone (13) is formed.The ketene-imine 9 is probably not an intermediate in these reactions.The reactions of other nucleophiles with 1 and with its N-methyl derivative 15, have been examined.

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