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12321-46-9

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12321-46-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 12321-46-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,2,3,2 and 1 respectively; the second part has 2 digits, 4 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 12321-46:
(7*1)+(6*2)+(5*3)+(4*2)+(3*1)+(2*4)+(1*6)=59
59 % 10 = 9
So 12321-46-9 is a valid CAS Registry Number.

12321-46-9Relevant articles and documents

Nonconventional versus conventional application of pseudo-first-order kinetics to fundamental organic reactions

Parker, Vernon D.,Hao, Weifang,Li, Zhao,Scow, Russell

, p. 2 - 12 (2012)

Three new analysis procedures for pseudo-first-order kinetics are introduced and applied to eight different fundamental organic reactions. The reactions belong to the following classes: nitroalkane proton transfer, formal hydride ion transfers from NADH model compounds, and SN2 reactions of alkyl halides with ionic and neutral nucleophiles. The three methods consist of (1) half-life dependence of kapp, (2) sequential linear pseudo-first-order correlation, and (3) revised instantaneous rate constant analysis. Each of the three procedures is capable of distinguishing between one- and multistep mechanisms, and the combination of the three procedures provides a powerful strategy for differentiating between the two mechanistic possibilities. The data from the eight reactions chosen as examples clearly show how the procedures work in practice.

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