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(4S,5R)-4-(hydroxymethyl)-2-phenyl-1,3-dioxan-5-ol is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

20638-61-3

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20638-61-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 20638-61-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,0,6,3 and 8 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 20638-61:
(7*2)+(6*0)+(5*6)+(4*3)+(3*8)+(2*6)+(1*1)=93
93 % 10 = 3
So 20638-61-3 is a valid CAS Registry Number.

20638-61-3Relevant academic research and scientific papers

Tertiary Amine Promoted Asymmetric Aldol Reaction of Aldehydes

Gut, Bartosz,Mlynarski, Jacek

supporting information, p. 5075 - 5078 (2015/08/18)

The direct asymmetric self-aldol reactions of various α-oxyaldehydes catalyzed by tertiary amines have been demonstrated. By using 10 mol-% of quinine catalyst, dimerization products have been prepared in high yields, with good anti-diastereocontrol, and up to 80% ee. The presented enolate-mediated synthesis of protected tetrose sugars has never been accomplished before by chiral tertiary amine organocatalysts.

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