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33238-34-5

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33238-34-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 33238-34-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,3,2,3 and 8 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 33238-34:
(7*3)+(6*3)+(5*2)+(4*3)+(3*8)+(2*3)+(1*4)=95
95 % 10 = 5
So 33238-34-5 is a valid CAS Registry Number.

33238-34-5Relevant articles and documents

Iron(II) bromide-catalyzed synthesis of benzimidazoles from aryl azides

Shen, Meihua,Driver, Tom G.

supporting information; experimental part, p. 3367 - 3370 (2009/05/27)

(Chemical Equation Presented) The identity of the ortho-substituent of an aryl azide influences its reactivity toward transition metals. Substitution of a vinyl group with an imine disables rhodium(II)-mediated C-H amination and triggers a Lewis acid mechanism catalyzed by iron(II) bromide to facilitate benzimidazole formation.

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