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100037-55-6

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100037-55-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 100037-55-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,0,0,3 and 7 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 100037-55:
(8*1)+(7*0)+(6*0)+(5*0)+(4*3)+(3*7)+(2*5)+(1*5)=56
56 % 10 = 6
So 100037-55-6 is a valid CAS Registry Number.

100037-55-6Downstream Products

100037-55-6Relevant articles and documents

Studies of Amine-Induced Ring Opening of Some Mesoionic Xanthines

Mbagwu, Godwin O.,Bass, R. Gerald,Glennon, Richard A.

, p. 465 - 474 (2007/10/02)

The ring-opening reactions of seven mesoionic thiazolopyrimidine-5,7-diones by a series of primary and secondary amines have been investigated.The rates of the ring fission of five N(8)-substituted mesoionic xanthines with benzylamine were measured and found to follow second order kinetics.The Hammett relationship is followed with ρ value of +0.48 in p-dioxane as solvent.The dependence of rates on temperatures has been studied for the N(8)-ethyl derivative; the energy of activation (ΔE*) is 25.3 kcals mol-1, the enthalpy of activation (ΔH*) is 24.7 kcals mo l -1 and the entropy of activation (ΔS*) is -4.9 e.u.A slight increase in rate of reaction was observed when the solvent was changed from p-dioxane to dimethyl sulfoxide.In p-dioxane at constant mesoionic xanthine concentration, the rate constant for ring opening decreased with increasing benzylamine concentration.These results are consistent with a bimolecular nucleophilic mechanism proceeding by the rate-determining formation of a charged tetrahedral transition state.

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