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2539-02-8

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2539-02-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 2539-02-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,5,3 and 9 respectively; the second part has 2 digits, 0 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 2539-02:
(6*2)+(5*5)+(4*3)+(3*9)+(2*0)+(1*2)=78
78 % 10 = 8
So 2539-02-8 is a valid CAS Registry Number.

2539-02-8SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 14, 2017

Revision Date: Aug 14, 2017

1.Identification

1.1 GHS Product identifier

Product name podototarin

1.2 Other means of identification

Product number -
Other names (4bS,4'bS)-1,1'-Diisopropyl-4b,8,8,4'b,8',8'-hexamethyl-4b,5,6,7,8,8a,9,10,4'b,5',6',7',8',8'a,9',10'-hexadecahydro-[3,3']biphenanthrenyl-2,2'-diol

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:2539-02-8 SDS

2539-02-8Downstream Products

2539-02-8Relevant articles and documents

Laccase-mediated oxidation of totarol

Ncanana, Sandile,Baratto, Lara,Roncaglia, Lucia,Riva, Sergio,Burton, Stephanie G.

, p. 1507 - 1513 (2007)

In this study, novel dimers of the biologically active phenolic compound totarol were synthesized using the phenol oxidase enzyme lacease, obtained from Trametes pusbescens, in organic solvent medium. Two dimeric products, linked either by carbon-carbon or by carbon-oxygen bonds, were isolated and characterized. The effect of changes in various parameters such as solvent, temperature, pH and buffer concentration on the conversion of totarol by lacease was investigated. The nature of the organic solvent, in particular, was found to affect the nature and the ratio of the products obtained.

Chemoenzymatic synthesis of (+)-totarol, (+)-podototarin, (+)-sempervirol, and (+)-jolkinolides E and D

Miyake, Takahiro,Kigoshi, Hideo,Akita, Hiroyuki

, p. 2915 - 2922 (2008/09/17)

The enzymatic resolution products [(1R,4aR,8aR)-1,2,3,4,4a,5,6,7,8,8a-decahydro-5,5,8a-trimethyl-2-oxo-trans-naphthalene-1-methanol-2-ethylene acetal (8aR)-7 (98% ee) and {acetate of (1S,4aS,8aS)-1,2,3,4,4a,5,6,7,8,8a-decahydro-5,5,8a-trimethyl-2-oxo-trans-naphthalene-1-methanol-2-ethylene acetal} (8aS)-9 (>99% ee)] obtained by the lipase-catalyzed enantioselective acetylation of (±)-7 in the presence of vinyl acetate as an acyl donor were converted to the α,β-unsaturated ketones (8aR)-6 and (8aS)-6, respectively. Concise syntheses of (+)-totarol 1, (+)-podototarin 2 and (+)-sempervirol 3 were achieved based on Michael reactions between (8aS)-6 and the appropriate β-keto ester followed by aldol condensation. The first chiral syntheses of (+)-jolkinolides E 4 and D 5 were achieved from (5R,10R,12R)-12-hydroxypodocarpa-8(14)-en-13-one 15 derived from (8aR)-6.

Phenolic Oxidations of Totarol

Cambie, Richard C.,Higgs, Paul I.,Read, Christine M.,Rutledge, Peter S.,Ryan, Glen R.,Woodgate, Paul D.

, p. 681 - 697 (2007/10/02)

Methods for the direct oxidation of the C 12 position of totarol (1) or its methyl ether (4) have been examined.Treatment of (1) with benzeneseleninic anhydride gave the 9-hydroxy dienone (16) which on ozonolysis afforded the spiro butenolide (21), formed via the ozonide (22).The rearranged ether (18) was obtained from one oxidation with benzeneseleninic anhydride.Mercuriation of totarol and totaryl methyl ether gave the mercuriochlorides (5) and (7) but attempts to form the methoxy acetate (6) from (7) by boronation/oxidation and acetylation were unsuccessful.Treatment of totaryl methyl ether (4) with thallium(III) trifluoroacetate gave dienone 14- and 9-trifluoroacetates (25) and (17).Reaction of the (η6-arene)tricarbonylchromium(0) complexes (28) and (29) of (4) with lithioacetonitrile gave the 7α-alcohol (30) but reaction with t-butyllithium and then with copper(I) bromide/dimethyl sulfide and MoOPH gave the methoxyphenol (12) in 66percent yield.

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