Cas 137524-72-2,Benzene, 2,4-dichloro-1-[2-[(2-phenylethyl)sulfonyl]ethenyl]-, (E)-

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Check Digit Verification of cas no

The CAS Registry Mumber 137524-72-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,5,2 and 4 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 137524-72:
(8*1)+(7*3)+(6*7)+(5*5)+(4*2)+(3*4)+(2*7)+(1*2)=132
132 % 10 = 2
So 137524-72-2 is a valid CAS Registry Number.

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137524-72-2Relevant academic research and scientific papers

A novel and convenient synthesis of E,E-bis(styryl)sulfones and E,E-1,4-diaryl-1,3-butadienes

Ramana Reddy,Manjubhashini,Reddy,Ramana Reddy,Bhaskar Reddy

, p. 1589 - 1596 (2007/10/02)

The condensation of 2-phenylethanesulfonylacetic acid (4) with araldehydes (5) in presence of a base gave E-styryl-2-phenylethyl sulfones (6) which on dehydrogenation with DDQ (7) yielded E,E-bis-(styryl)sulfones (8). The 8 on treatment with dichlorotris(triphenyl-phosphine)ruthehium(II) catalyst resulted 1,4-diaryl-1,3-butadienes (9). The configurations of 6, 8 and 9 have been determined based on IR and 1H NMR spectral data.

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