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33280-94-3

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33280-94-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 33280-94-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,3,2,8 and 0 respectively; the second part has 2 digits, 9 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 33280-94:
(7*3)+(6*3)+(5*2)+(4*8)+(3*0)+(2*9)+(1*4)=103
103 % 10 = 3
So 33280-94-3 is a valid CAS Registry Number.

33280-94-3Downstream Products

33280-94-3Relevant academic research and scientific papers

Hydantoin-free synthesis of peptide ester isocyanates, isothiocyanates, and dipeptidyl ureas: The application of zinc dust in a carbonylation procedure without base

Narendra,Vishwanatha,Sureshbabu, Vommina V.

, p. 3247 - 3254 (2011)

Non-Schotten-Baumann conditions are described for the hydantoin-free synthesis of peptide ester isocyanates using activated zinc dust as a non-basic HCl scavenger. Also, the procedure gives no N-acylated products in the case of the conversion of amino acid and peptide amides into isocyanates. Georg Thieme Verlag Stuttgart · New York.

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