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872689-55-9

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872689-55-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 872689-55-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,7,2,6,8 and 9 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 872689-55:
(8*8)+(7*7)+(6*2)+(5*6)+(4*8)+(3*9)+(2*5)+(1*5)=229
229 % 10 = 9
So 872689-55-9 is a valid CAS Registry Number.

872689-55-9Downstream Products

872689-55-9Relevant articles and documents

Synthesis and application of L-N-Boc-N-methyl-β-hydroxyvaline in the preparation of a depsipeptide

Dettwiler, James E.,Belec, Laurent,Lubell, William D.

, p. 793 - 800 (2007/10/03)

Enantiopure (>99% ee) L-N-tert-butyloxycarbonyl-N-methyl-β- hydroxyvaline (2) was synthesized in six steps and 43% overall yield from D-serine methyl ester (5). Methyl (4S)-N-(9-phenylfluoren-9-yl)-oxazolidine-4- carboxylate (7) was prepared in two steps

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