658685

Sigma-Aldrich

Os EnCat® 40

extent of labeling: 0.3 mmol/g Os loading

Synonym(s):
Osmium oxide, Osmium tetroxide, microencapsulated
Empirical Formula (Hill Notation):
OsO4
CAS Number:
Molecular Weight:
254.23
MDL number:
PubChem Substance ID:
NACRES:
NA.22

Quality Level

reaction suitability

core: osmium
reagent type: catalyst
reagent type: oxidant

extent of labeling

0.3 mmol/g Os loading

SMILES string

O=[Os](=O)(=O)=O

InChI

1S/4O.Os

InChI key

VUVGYHUDAICLFK-UHFFFAOYSA-N

General description

The product is osmium tetroxide encapsulated within a porous cross-linked polyurea matrix.

Application

Os EnCat® 40 in the presence of a secondary oxidant can transform alkyl and aryl olefins to their corresponding diols via dihydroxylation reaction.

Packaging

1, 5 g in glass bottle
500 mg in glass bottle

Features and Benefits

Encapsulated OsO4 catalyst offers safety and handling advantages over conventional OsO4.

Legal Information

Os EnCat® technology.
EnCat is a registered trademark of Reaxa Ltd.

Pictograms

CorrosionSkull and crossbones

Signal Word

Danger

Hazard Statements

hazcat

Acute Tox. 2 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Eye Dam. 1 - Skin Corr. 1B

Supp Hazards

EUH019

storage_class_code

6.1A - Combustible, acute toxic Cat. 1 and 2 / very toxic hazardous materials

WGK Germany

WGK 3

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

Certificate of Analysis

Certificate of Origin

Steven V Ley et al.
Organic letters, 5(2), 185-187 (2003-01-17)
[reaction: see text] Osmium tetroxide has been microencapsulated in a polyurea matrix using an in situ interfacial polymerization approach. These microcapsules have been effectively used as recoverable and reusable catalysts in the dihydroxylation of olefins
Yukihiko Sugita et al.
The Journal of general virology, 92(Pt 11), 2485-2493 (2011-07-29)
Negatively stained influenza virions sometimes show irregular morphology and are often referred to as pleomorphic. However, this irregular morphology has not been visualized when ultrathin-section transmission and scanning electron microscopies are used. This study focused on the effects of ultracentrifugation...
Carsten Købler et al.
Analytical and bioanalytical chemistry, 406(16), 3863-3873 (2014-01-23)
Ultrastructural characterisation is important for understanding carbon nanotube (CNT) toxicity and how the CNTs interact with cells and tissues. The standard method for this involves using transmission electron microscopy (TEM). However, in particular, the sample preparation, using a microtome to...
F Wyss et al.
Veterinary pathology, 52(6), 1235-1242 (2015-01-27)
Pododermatitis is frequent in captive flamingos worldwide, but little is known about the associated histopathologic lesions. Involvement of a papillomavirus or herpesvirus has been suspected. Histopathologic evaluation and viral assessment of biopsies from 19 live and 10 dead captive greater...
OsO4·streptavidin: a tunable hybrid catalyst for the enantioselective cis-dihydroxylation of olefins.
Valentin Köhler et al.
Angewandte Chemie (International ed. in English), 50(46), 10863-10866 (2011-09-29)
Articles
We offer EnCat and a variety of transition metal-based encapsulated catalysts for applications in areas such as Suzuki, Stille, and Heck couplings, carbonylations, hydrogenation, hydrogenolysis, and dihydroxylation.
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