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804551-13-1

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804551-13-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 804551-13-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,0,4,5,5 and 1 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 804551-13:
(8*8)+(7*0)+(6*4)+(5*5)+(4*5)+(3*1)+(2*1)+(1*3)=141
141 % 10 = 1
So 804551-13-1 is a valid CAS Registry Number.

804551-13-1Relevant articles and documents

Highly stereoselective oxy-Michael additions to α,β- disubstituted nitro olefins: Asymmetric synthesis of pseudo-norephedrine derivatives and THP protected α-hydroxy ketones

Buchanan, David J.,Dixon, Darren J.,Hernandez-Juan, Felix A.

, p. 2932 - 2934 (2004)

The "naked" anion of (S)-6-methyl delta lactol undergoes efficient oxy-Michael addition to α,β-disubstituted nitro olefins to give the THP* protected Henry products with excellent (95→98% de) stereocontrol at the β-position and moderate (up to 3:1) stereo

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