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181637-39-8

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181637-39-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 181637-39-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,1,6,3 and 7 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 181637-39:
(8*1)+(7*8)+(6*1)+(5*6)+(4*3)+(3*7)+(2*3)+(1*9)=148
148 % 10 = 8
So 181637-39-8 is a valid CAS Registry Number.

181637-39-8Relevant articles and documents

A facile transformation of the δ-hydroxy-α-amino lactones from α- furfuryl amide

Liao, Li-Xin,Zhou, Wei-Shan

, p. 12571 - 12584 (2007/10/03)

(S)- and (R)- α- furfuryl amides, obtained from the kinetic resolution of (R, S)- α- furfuryl amide using the modified Sharpless asymmetric epoxidation, have been transformed into four 8-hydroxy α- amino lactones (1S, 3S)-1, (1R, 3R)-1, (1S, 3R)-1, (1R, 3S)-1, using sharpless asymmetric dihydroxylation as the key step. The much more efficient method of the addition of chiral aldimine 10 with allylic Grignard reagent for preparation of (S, S)-1 was also achieved.

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