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7658-63-1

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7658-63-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 7658-63-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,6,5 and 8 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 7658-63:
(6*7)+(5*6)+(4*5)+(3*8)+(2*6)+(1*3)=131
131 % 10 = 1
So 7658-63-1 is a valid CAS Registry Number.

7658-63-1Downstream Products

7658-63-1Relevant articles and documents

Kinetics and Mechanism of the Reaction of Substituted Phenylhydrazones with Thallium(III) Acetate. Reactions of Mercury(II) Acetate with Nitrogen Compounds. Part 8

Butler, Richard N.,Morris, Gerard J.,O'Donohue, Anne M.

, p. 1243 - 1246 (2007/10/02)

The reaction of substituted phenylhydrazones with thallium(III) acetate in acetic acid involved an electrophilic attack at the hydrazone amino-NH moiety giving an intermediate which is attacked by solvent at the methine carbon.The Hammett ρ values for substituents in the methine and the N-phenyl rings were -1.05 and -3.6, respectively.Activation thermodynamic parameters ΔEa 17.9, ΔHa 17.2 kcal mol-1, and ΔSa -14.65 cal K-1 mol-1 were measured for p-chlorobenzaldehyde p-nitrophenylhydrazone.The main products from aromatic aldehyde arylhydrazones were N'-acetyl-N-aroyl-N'-arylhydrazines (5).The main products from ketone arylhydrazones were α-acetoxy-α-phenylazo-derivatives of the ketone (4).The unexpected divergence of reactivity of phenylhydrazones with the acatates of Hg(II), Tl(III), and Pb(IV) is discussed.

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