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439916-75-3

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439916-75-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 439916-75-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,3,9,9,1 and 6 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 439916-75:
(8*4)+(7*3)+(6*9)+(5*9)+(4*1)+(3*6)+(2*7)+(1*5)=193
193 % 10 = 3
So 439916-75-3 is a valid CAS Registry Number.

439916-75-3Relevant articles and documents

Original and efficient method for the preparation of N-aminoamide pseudodipeptides in high optical purity

Brosse, Nicolas,Grandeury, Arnaud,Jamart-Grégoire, Brigitte

, p. 2009 - 2011 (2002)

N-Aminoamide pseudodipeptides ZAAΨ[CO-N(NPht)]-AAOR can be easily obtained via the Mitsunobu protocol by using α-hydroxyesters as alcohol partners and aminoacid phthaloyl hydrazide derivatives as acidic partners. The direct conversion of the phthaloyl group into tert-butyloxycarbonyl can be performed in a three-stage one-pot protocol.

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