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178821-17-5

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178821-17-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 178821-17-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,8,8,2 and 1 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 178821-17:
(8*1)+(7*7)+(6*8)+(5*8)+(4*2)+(3*1)+(2*1)+(1*7)=165
165 % 10 = 5
So 178821-17-5 is a valid CAS Registry Number.

178821-17-5Downstream Products

178821-17-5Relevant articles and documents

Synthesis and properties of some novel pyrazolone-based heterocyclic azo disperse dyes containing a fluorosulfonyl group

Singh, Ajay,Choi, Ran,Choi, Byunghun,Koh, Joonseok

, p. 580 - 586 (2012/10/30)

A series of heteroarylazo disperse dyes derived from pyrazolones and fluorosulfonyl anilines were synthesized, and their thermal and spectral properties were investigated with respect to the effect of substituents on absorption spectra, halochromism, and

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