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658685

Sigma-Aldrich

Os EnCat® 40

extent of labeling: 0.3 mmol/g Os loading

Synonym(s):

Osmium oxide, Osmium tetroxide, microencapsulated

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About This Item

Empirical Formula (Hill Notation):
OsO4
CAS Number:
20816-12-0
Molecular Weight:
254.23
MDL number:
MFCD00011150
UNSPSC Code:
12161600
PubChem Substance ID:
24884370
NACRES:
NA.22

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

Related Categories

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.

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

Skull and crossbonesCorrosion
GHS06,GHS05

Signal Word

Danger

Hazard Statements

H301 + H331,H310,H314

Hazard Classifications

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

Supplementary Hazards

EUH019

Storage Class Code

4.1B - Flammable solid hazardous materials

WGK

WGK 3

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
14826BH
14626BH
14726BH
02124CE
10920TD

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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
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OsO4·streptavidin: a tunable hybrid catalyst for the enantioselective cis-dihydroxylation of olefins.
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Angewandte Chemie (International ed. in English), 50(46), 10863-10866 (2011-09-29)
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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
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EnCat™ & Other Catalysts

Sigma-Aldrich offers 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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