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19464-85-8

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19464-85-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 19464-85-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,4,6 and 4 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 19464-85:
(7*1)+(6*9)+(5*4)+(4*6)+(3*4)+(2*8)+(1*5)=138
138 % 10 = 8
So 19464-85-8 is a valid CAS Registry Number.

19464-85-8SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 19, 2017

Revision Date: Aug 19, 2017

1.Identification

1.1 GHS Product identifier

Product name (+)-roccellaric acid

1.2 Other means of identification

Product number -
Other names (2R,3S,4S)-4-methyl-5-oxo-2-tridecyltetrahydrofuran-3-carboxylic acid

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:19464-85-8 SDS

19464-85-8Downstream Products

19464-85-8Relevant articles and documents

Stereoselective total synthesis of (+)-nephrosteranic acid and (+)-roccellaric acid through asymmetric dihydroxylation and Johnson-Claisen rearrangement

Fernandes, Rodney A.,Chowdhury, Asim K.

, p. 1106 - 1112 (2011)

An efficient stereoselective total synthesis of (+)-nephrosteranic acid and (+)-roccellaric acid is presented. The synthetic strategy features the regioselective asymmetric dihydroxylation of the γ,δ-olefinic bond of a α,β,γ,δ-unsaturated ester and the Johnson-Claisen rearrangement as the key steps. The synthesis is achieved in 10 steps and 6.8% (nephrosteranic acid) and 7.6% (roccellaric acid) overall yield.

A protecting-group-free synthesis of (+)-nephrosteranic, (+)-protolichesterinic, (+)-nephrosterinic, (+)-phaseolinic, (+)-rocellaric acids and (+)-methylenolactocin

Nallasivam, Jothi L.,Fernandes, Rodney A.

, p. 708 - 716 (2017/01/25)

A collective synthesis of a γ-butyrolactone class of paraconic acids such as (+)-methylenolactocin, (+)-phaseolinic acid, (+)-nephrosteranic acid, (+)-nephrosterinic acid, (+)-rocellaric acid and (+)-protolichesterinic acid is described. The strategy adopted is protecting-group-free based on efficient Pd-catalyzed Suzuki-Miyaura coupling and Ru-catalyzed Sharpless oxidation to construct the core β-CO2H-γ-butyrolactone unit to accomplish the synthesis of various paraconic acids.

Enantioselective butenolide preparation for straightforward asymmetric syntheses of γ-lactones - Paraconic acids, avenaciolide, and hydroxylated eleutherol

Braukmueller, Stefan,Brueckner, Reinhard

, p. 2110 - 2118 (2007/10/03)

The naturally occurring γ-lactones (+)-methylenolactocin (13) and its enantiomer, (+)-protolichesterinic acid (14) and its enantiomer, (+)-rocellaric acid (15), and the methylene bis(γ-lactone) (-)-avenaciolide (16) were synthesized with 95-98 % ees in very few steps. Enantiocontrol was imposed by the asymmetric dihydroxylation of trans-configured β,γ-unsaturated carboxylic esters (namely compounds 1i, 1j, and 1n) with AD mix-α [for the levorotatory target structures, except for (-)-avenaciolide] or AD mix-β [for the dextrorotatory target structures plus (-)-avenaciolide]. β,γ-Unsaturated carboxylic ester 1e required increased amounts of the oxidant and auxiliary to produce the hydroxy lactone R,R-3e, a precursor of the naphtho-γ-lactone (+)-9-hydroxyeleutherol (12; 96 % ee). Wiley-VCH Verlag GmbH & Co. KGaA, 2006.

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