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637337-54-3

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637337-54-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 637337-54-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,3,7,3,3 and 7 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 637337-54:
(8*6)+(7*3)+(6*7)+(5*3)+(4*3)+(3*7)+(2*5)+(1*4)=173
173 % 10 = 3
So 637337-54-3 is a valid CAS Registry Number.

637337-54-3Relevant articles and documents

Enantioselective preparation of β2-amino acids with aspartate, glutamate, asparagine, and glutamine side chains

Lelais, Gerald,Campo, Marino A.,Kopp, Sascha,Seebach, Dieter

, p. 1545 - 1560 (2007/10/03)

(S)-β2-Homoamino acids with the side chains of Asp, Glu, Asn, and Gln have been prepared and suitably protected (N-Fmoc, CO 2′Bu CONHTrt) for solid-phase peptide syntheses. The key steps of the syntheses are: N-acylation of 5,5-diphe

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