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117873-19-5

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117873-19-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 117873-19-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,7,8,7 and 3 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 117873-19:
(8*1)+(7*1)+(6*7)+(5*8)+(4*7)+(3*3)+(2*1)+(1*9)=145
145 % 10 = 5
So 117873-19-5 is a valid CAS Registry Number.

117873-19-5Relevant articles and documents

Use of α-Anilino Dienenitriles as Nucleophiles in Cycloadditions

Fang, Jim-Min,Yang,Chau-Chen,Wang, Yu-Wen

, p. 477 - 481 (2007/10/02)

The α-anilino dienenitriles 1-5 were prepared.The dienes 1-3 reacted with dichlorocarbene and electrophiles containing electron-deficient double bonds such as maleic anhydride, benzoquinone, dimethyl acetylenedicarboxylate, tetracyanoethylene, and chlorosulphonyl isocyanate.The diarylmethylamines 8-10, generated by cycloaddition of α-anilino dienenitriles and maleic anhydride, were successfully transformed into acridones 15-17.Intramolecular cyclization of trienes 4 and 5 yielded the carbazoles and dihydro derivatives, accompanied by formation of 2-cyano-1-methylindole.

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