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338389-72-3

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338389-72-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 338389-72-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,3,8,3,8 and 9 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 338389-72:
(8*3)+(7*3)+(6*8)+(5*3)+(4*8)+(3*9)+(2*7)+(1*2)=183
183 % 10 = 3
So 338389-72-3 is a valid CAS Registry Number.

338389-72-3Downstream Products

338389-72-3Relevant articles and documents

ENANTIOMERIC RESOLUTION OF 2,4-DISUBSTITUTED 1,3-OXATHIOLANE NUCLEOSIDES

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Page/Page column 6, (2012/07/28)

Single enantionmers of compounds of formula (B), in either the cis or trans configuration, wherein R1 and R2 are as defined herein, can be separated from enantiomeric mixtures thereof by reacting the compound with an acid to produce

Enantiomeric resolution of 2-substituted 4-substituted 1,3-oxathiolanes nucleosides

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Page/Page column 9-10; Sheet 2/2, (2009/04/24)

Single enantionmers of compounds of formula (B), in either the cis or trans configuration, wherein R1 and R2 are as defined herein, can be separated from enantiomeric mixtures thereof by reacting the compound with an acid to produce a conglomerate salt that has the following characteristics: the IR spectrum of the salt of the racemic compound, a 1:1 mixture of (?) and (+) crystals, is identical to that of the each of the single enantiomer, andthe salt of the racemic compound has a melting point lower that that of either single enantiomer. The conglomerate salt is then separated by preferential crystallization.

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