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322478-55-7

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322478-55-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 322478-55-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,2,2,4,7 and 8 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 322478-55:
(8*3)+(7*2)+(6*2)+(5*4)+(4*7)+(3*8)+(2*5)+(1*5)=137
137 % 10 = 7
So 322478-55-7 is a valid CAS Registry Number.

322478-55-7Relevant articles and documents

Entropy-controlled asymmetric synthesis. How differential activation entropy is induced in chiral tethered reactions

Sugimura, Takashi,Hagiya, Kazutake,Sato, Yasuhiro,Tei, Takahiro,Tai, Akira,Okuyama, Tadashi

, p. 37 - 40 (2007/10/03)

(equation presented) Kinetic measurements to determine effective molarities of intramolecular reactions using 2,4-pentanediol and related tethers showed that methyl groups on the tether accelerate the major diastereomeric process but decelerate the minor process. The efficient promotion of stereocontrol is suggested to be due to chiral perturbation of the reaction rate through the entropy term. The conformation of the encounter complex of the reagent and reactant moieties was deduced by stereochemical analysis of the intramolecular adducts.

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