Cas 128608-79-7,5,5,11,11-tetraphenyl-3,4,9,10-tetraazatetracyclo<5.5.1.0<sup>2,6</sup>.0<sup>8,12exo</sup>>trideca-3,9-diene-endo-cis-2,6-dicarboxylic anhydride

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Check Digit Verification of cas no

The CAS Registry Mumber 128608-79-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,6,0 and 8 respectively; the second part has 2 digits, 7 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 128608-79:
(8*1)+(7*2)+(6*8)+(5*6)+(4*0)+(3*8)+(2*7)+(1*9)=147
147 % 10 = 7
So 128608-79-7 is a valid CAS Registry Number.

128608-79-7Upstream product

128608-79-7Downstream Products

128608-81-1 3,3,3,3-tetraphenyltetracyclo<3.3.1.0^2,4.0^2,2.0^6,8>nona-3,10-endo-cis-2,4-dicarboxylic anhydride

128608-79-7Relevant academic research and scientific papers

The Pyrolysis of Butatrienone Precursors: 3,4-Diazatricyclo2,6>deca-3,8-diene-endo-cis-2,6-dicarboxylic Anhydride and its 5,5-Diphenyl Derivative

Anderson, Mark R.,Brown, Roger F. C.,Browne, Neil R.,Eastwood, Frank W.,Fallon, Gary D.,et al.

, p. 549 - 560 (2007/10/02)

Flash vacuum pyrolysis of the title anhydride (4) gave a poor yield of butatrienone, detected by argon matrix isolation infrared spectroscopy.Similar pyrolysis of the 5,5-diphenyl derivative (8) failed to give diphenylbutatrienone: the red product (16) is

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