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639458-49-4

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639458-49-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 639458-49-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,3,9,4,5 and 8 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 639458-49:
(8*6)+(7*3)+(6*9)+(5*4)+(4*5)+(3*8)+(2*4)+(1*9)=204
204 % 10 = 4
So 639458-49-4 is a valid CAS Registry Number.

639458-49-4SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 17, 2017

Revision Date: Aug 17, 2017

1.Identification

1.1 GHS Product identifier

Product name (S)-2-(2-acetoxy-ethyl)-piperidine-1-carboxylic acid tert-butyl ester

1.2 Other means of identification

Product number -
Other names -

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:639458-49-4 SDS

639458-49-4Relevant articles and documents

Remote Stereocenter Discrimination in the Enzymatic Resolution of Piperidine-2-ethanol. Short Enantioselective Synthesis of Sedamine and Allosedamine

Angoli, Marco,Barilli, Alessio,Lesma, Giordano,Passarella, Daniele,Riva, Sergio,Silvani, Alessandra,Danieli, Bruno

, p. 9525 - 9527 (2003)

Kinetic resolution of N-Boc-piperidine-2-ethanol (2), a case of remote stereocenter discrimination, was accomplished by sequential transesterification mediated by two enzymes, Lipase PS and porcine pancreatic lipase, showing opposite enantioselectivity. The gram-scale availability of the two enantiomeric N-Boc alcohols 2a (R) and 2c (S) enlarges their synthetic exploitation for the enantioselective preparation of piperidine alkaloids. As an example, the convenient three-step synthesis of both the enantiomers of sedamine and allosedamine is described.

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