Cas 81009-58-7,{ethylenebis(biguanide)}copper(II) sulphate

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Check Digit Verification of cas no

The CAS Registry Mumber 81009-58-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,0,0 and 9 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 81009-58:
(7*8)+(6*1)+(5*0)+(4*0)+(3*9)+(2*5)+(1*8)=107
107 % 10 = 7
So 81009-58-7 is a valid CAS Registry Number.

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81009-58-7Relevant academic research and scientific papers

Kinetics of Oxidation of Ethanol, Isopropyl Alcohol, and Benzyl Alcohol by

Banerjee, Rupendranath,Das, Amitava,Dasgupta, Subrata

, p. 1207 - 1212 (1990)

In aqueous acid solutions, the complex 3+ (H2L = ethylenebis(biguanide)> quantitatively oxidises ethanol, isopropyl alcohol, and benzyl alcohol to the corresponding carbonyl products at moderate rate.The experimental rate law is -d/dt = (k1 + k2/+>).At 40 deg C and I = 1.0 mol dm-3, 105k1 (dm-3 mol-1 S-1) and 106k2 (s-1) values are: EtOH, 4.2 +/- 0.3 and 2.8 +/- 0.1, PriOH, 7.5 +/- 0.5 and 4.8 +/- 0.2; PhCH2OH, 95 +/- 6 and 32.5 +/- 2 respectively.The upper limit for the rate of reaction of 3+ with methanol, t-butyl alcohol, ethylene glycol, and glycerol is the rate of autodecomposition of 3+ and is less than 10percent of the rate of oxidation of EtOH, PriOH, or PhCH2OH.Deprotonation of the alcohols assisted by axial co-ordination to 3+ is suggested as a source of the inverse acid dependence.The whole reaction course is e.s.r. silent and a rate-determining C-H bond cleavage in the -CHOH group appears reasonable.Compared to other metal-ion oxidants, 3+ appears to be the most selective reagent for PhCH2OH.