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1443338-23-5

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1443338-23-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1443338-23-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,4,3,3,3 and 8 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1443338-23:
(9*1)+(8*4)+(7*4)+(6*3)+(5*3)+(4*3)+(3*8)+(2*2)+(1*3)=145
145 % 10 = 5
So 1443338-23-5 is a valid CAS Registry Number.

1443338-23-5Downstream Products

1443338-23-5Relevant articles and documents

Efficient synthesis of 9,10-bis(phenylethynyl)anthracene derivatives by integration of sonogashira coupling and double-elimination reactions

Toyota, Shinji,Mamiya, Daiki,Yoshida, Rie,Tanaka, Ryo,Iwanaga, Tetsuo,Orita, Akihiro,Otera, Junzo

, p. 1060 - 1068 (2013/05/21)

9,10-Bis(phenylethynyl)anthracene (BPEA) derivatives were synthesized from 10-bromo-9-anthracenecarbaldehyde by stepwise Sonogashira coupling with phenylethynes and the one-shot double-elimination reaction with benzyl phenyl sulfones. Those two reactions could be integrated in a one-pot process to give unsymmetrically substituted BPEA derivatives in good yields by simple operations. This integrated process was applied to the synthesis of an extended BPEA derivative having an extra phenylethynyl group. The photophysical properties of the BPEA derivatives were investigated by UV/Vis and fluorescence spectroscopy. Georg Thieme Verlag Stuttgart · New York.

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