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Phosphonic acid, [(1S)-1-hydroxybutyl]-, diethyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

221129-99-3

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221129-99-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 221129-99-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,1,1,2 and 9 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 221129-99:
(8*2)+(7*2)+(6*1)+(5*1)+(4*2)+(3*9)+(2*9)+(1*9)=103
103 % 10 = 3
So 221129-99-3 is a valid CAS Registry Number.

221129-99-3Downstream Products

221129-99-3Relevant academic research and scientific papers

Nonenzymatic kinetic resolution of racemic α-hydroxyalkanephosphonates with chiral copper catalyst

Demizu, Yosuke,Moriyama, Atsushi,Onomura, Osamu

experimental part, p. 5241 - 5244 (2009/12/06)

Kinetic resolution of α-hydroxyalkanephosphonates was efficiently performed by benzoylation in the presence of copper(II) triflate and (R,R)-Ph-BOX as a catalyst with excellent s value of up to 286.

An efficient route to chiral α- and β-hydroxyalkanephosphonates

Pamies, Oscar,Baeckvall, Jan-E.

, p. 4815 - 4818 (2007/10/03)

Enzymatic kinetic resolution of α- and β-hydroxyphosphonates in combination with ruthenium-catalyzed alcohol isomerization led to a successful dynamic kinetic resolution. A variety of racemic hydroxyphosphonates were efficiently transformed to the corresponding enantiomerically pure acetates (ee up to 99% and yield up to 87%).

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