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142673-33-4

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142673-33-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 142673-33-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,2,6,7 and 3 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 142673-33:
(8*1)+(7*4)+(6*2)+(5*6)+(4*7)+(3*3)+(2*3)+(1*3)=124
124 % 10 = 4
So 142673-33-4 is a valid CAS Registry Number.

142673-33-4Downstream Products

142673-33-4Relevant articles and documents

Practical Preparation of Chiral 4-Substituted 2-Oxazolidinones

Ishizuka, Tadao,Kimura, Koreichi,Ishibuchi, Seigo,Kunieda, Takehisa

, p. 991 - 994 (2007/10/02)

A versatile and practical route to both enantiomers of a wide variety of 4-substituted 2-oxazolidinones from the parent heterocycle is provided by regioselective substitutions via 4-methoxy derivative followed by chromatographic separation of the diastereomers derived from N-2-exo-methoxy-1-apocamphanecarbonylation.

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