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725728-39-2

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725728-39-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 725728-39-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,2,5,7,2 and 8 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 725728-39:
(8*7)+(7*2)+(6*5)+(5*7)+(4*2)+(3*8)+(2*3)+(1*9)=182
182 % 10 = 2
So 725728-39-2 is a valid CAS Registry Number.

725728-39-2Relevant articles and documents

A facile, inexpensive and scalable route to thiol-protected α-methyl cysteine

Johnston, Heather J.,Hulme, Alison N.

, p. 591 - 594 (2013)

A facile, scalable synthesis of α-methyl cysteine with three alternate thiol protecting groups (trityl, allyl and tert-butyl) is described. The thiol-protected amino acids are obtained in six steps from l-cysteine ethyl ester and are ideally suited for a range of natural product and solid-phase peptide synthesis applications. Georg Thieme Verlag Stuttgart - New York.

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