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39240-04-5

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39240-04-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 39240-04-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,9,2,4 and 0 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 39240-04:
(7*3)+(6*9)+(5*2)+(4*4)+(3*0)+(2*0)+(1*4)=105
105 % 10 = 5
So 39240-04-5 is a valid CAS Registry Number.

39240-04-5Downstream Products

39240-04-5Relevant 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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