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676449-09-5

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676449-09-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 676449-09-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,7,6,4,4 and 9 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 676449-09:
(8*6)+(7*7)+(6*6)+(5*4)+(4*4)+(3*9)+(2*0)+(1*9)=205
205 % 10 = 5
So 676449-09-5 is a valid CAS Registry Number.

676449-09-5Relevant articles and documents

Asymmetric Intramolecular Amidation of N-(tert-Butoxycarbonyl)-3-hydroxy-4-pentenylamine. A New Entry to Chiral Building Blocks for the Synthesis of Biologically Active Nitrogen-Containing Compounds

Takahata, Hiroki,Banba, Yasunori,Tajima, Mayumi,Momose, Takefumi

, p. 240 - 245 (1991)

Sharpless reaction of racemic N-(tert-butoxycarbonyl)-3-hydroxy-4-pentenylamine (1) leads to both an asymmetric kinetic resolution to provide optically active 1, which was subsequently used for intramolecular amidomercuration, and asymmetric epoxidation followed by concomitant cyclization into optically active cis-3-hydroxy-2-(hydroxymethyl)pyrrolidine (3).Optically active 1 and 3 have been expediently used as chiral building blocks in the asymmetric synthesis of several biologically active natural products.

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