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63494-46-2

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63494-46-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 63494-46-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,3,4,9 and 4 respectively; the second part has 2 digits, 4 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 63494-46:
(7*6)+(6*3)+(5*4)+(4*9)+(3*4)+(2*4)+(1*6)=142
142 % 10 = 2
So 63494-46-2 is a valid CAS Registry Number.

63494-46-2Relevant articles and documents

Synthesis and Spectral Characterization of Blue Dyes of the Benzene Series

Thiel, W.,Mayer, R.,Jauer, E.-A.,Modrow, H.,Dost, H.

, p. 497 - 514 (2007/10/02)

53 Donor-acceptor substituted azo dyes of the benzene series were prepared by diazonium-coupling reactions (1a-s) or halogen-cyanide exchange (->2a-x, 3a-j).Described are the preparation of the amines 4a-m and the coupling compounds 5a-t and the procedure of diazotizing and coupling.The colouristic and spectroscopic data show that compounds of the general formula 1 are excellent brilliant blue azo dyes usefull for dyeing polyester material.

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