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128971-07-3

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128971-07-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 128971-07-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,9,7 and 1 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 128971-07:
(8*1)+(7*2)+(6*8)+(5*9)+(4*7)+(3*1)+(2*0)+(1*7)=153
153 % 10 = 3
So 128971-07-3 is a valid CAS Registry Number.

128971-07-3Downstream Products

128971-07-3Relevant articles and documents

PREPARATION AND NONLINEAR OPTICAL PROPERTY OF POLYDIACETYLENES FROM UNSYMMETRICAL DIPHENYLBUTADIYNES WITH TRIFLUOROMETHYL SUBSTITUENTS

Okada, Shuji,Ohsugi, Minoru,Masaki, Atsushi,Matsuda, Hiro,Takaragi, Shigeru,Nakanishi, Hachiro

, p. 81 - 90 (2007/10/02)

In order to obtain the polydiacetylenes having ?-conjugation between polymer backbone and side chains, many of unsymmetrical diphenylbutadiyne derivatives with trifluoromethyl substituents on one of the phenyl rings have been synthesized.Among them, 1-(3-(methylamino)phenyl)-4-(3,5-bis(trifluoromethyl)phenyl)butadiyne (MADF) was found to be topochemically polymerized with complete conversion into the polymer single crystals.Spectroscopies and X-ray crystal structure analysis revealed that the ?-conjugation of this polymer are more extended than those of the sofar prepared poly(diphenylbutadiyne)s, with smaller dihedral angles between ?-conjugation planes of polymer backbone and phenyl rings.The extended ?-conjugation was also confirmed by larger χ(3) values.

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