CAS 20816-12-0

Osmium tetroxide

Description:

Osmium tetroxide (OsO4) is a highly reactive and volatile compound known for its strong oxidizing properties. It appears as a colorless to pale yellow solid or liquid, depending on its state, and has a distinctive, pungent odor. Osmium tetroxide is soluble in organic solvents such as acetone and alcohol, but only slightly soluble in water. It is primarily used in organic chemistry as a reagent for the oxidation of alkenes to form diols, and it plays a crucial role in electron microscopy as a fixative due to its ability to bind to lipids and proteins. However, it is also highly toxic and poses significant health risks, including respiratory and skin irritation, and potential carcinogenic effects. Therefore, handling osmium tetroxide requires strict safety precautions, including the use of fume hoods and personal protective equipment. Its unique properties make it valuable in various scientific applications, but its hazards necessitate careful management in laboratory settings.

Formula: O₄Os

InChI: InChI=1S/4O.Os

InChI key: InChIKey=VUVGYHUDAICLFK-UHFFFAOYSA-N

SMILES: [Os](=O)(=O)(=O)=O

Synonyms:

• Milas' reagent
• Osmic Acid
• Osmium Oxide
• Osmium Tetroxide
• Osmium oxide (OsO4)
• Osmium oxide (OsO4), (T-4)-
• Osmium oxide (OsO₄)
• Osmium oxide (OsO₄), (T-4)-
• Osmium tetraoxide
• Osmium(IV) oxide
• Osmiumtetraoxid
• Osmiumtetroxid
• Reagents, Milas'
• Tetraoxido De Osmio
• Tetraoxoosmium

Osmium Tetroxide (4% in Water)

CAS: 20816-12-0

Formula: OsO₄

Color and Shape: Light orange to Yellow to Green clear liquid

Molecular weight: 254.23

Ref: 3B-O0308

Osmium(VIII) oxide, 99.8% (metals basis), Os 74.4% min

CAS: 20816-12-0

Oxidation, catalyst in Sharpless dihydroxylations Osmium(VIII) oxide is used in the Sharpless oxyamination to give vicinal amino-alcohols. It is used to oxidize alkenes to the vicinal diols. It acts as a staining agent used in transmission electron microscopy to provide contrast to the image and as

Formula: O₄Os

Purity: 74.4%

Color and Shape: Pale yellow, Crystalline solid

Molecular weight: 254.23

Ref: 02-012103

Osmium(VIII) oxide, 4% aq. soln.

CAS: 20816-12-0

Osmium(VIII) oxide is widely used as an oxidant in organic synthesis to oxidize alkenes to vicinal diols as well as in the sharpless oxyamination to give vicinal amino-alcohols. It is involved in the oxidative cleavage of alkenes (Lemieux-Johnson oxidation) in association with sodium periodate. It

Formula: O₄Os

Color and Shape: Pale yellow, Liquid

Molecular weight: 254.23

Ref: 02-045385

Osmium(VIII) oxide, 2% aq. soln.

CAS: 20816-12-0

Osmium(VIII) oxide is widely used as an oxidant in organic synthesis to oxidize alkenes to vicinal diols as well as in the sharpless oxyamination to give vicinal amino-alcohols. It is involved in the oxidative cleavage of alkenes (Lemieux-Johnson oxidation) in association with sodium periodate. It

Formula: O₄Os

Color and Shape: Liquid, Pale yellow

Molecular weight: 254.23

Ref: 02-045384

Osmium(VIII) oxide solution, 4% OsO4

CAS: 20816-12-0

Formula: OsO₄aq

Purity: ≥ 99.9%

Color and Shape: Colourless to pale yellow or pale green solution

Molecular weight: 254.20

Ref: 7W-GX9093

Osmium(VIII) oxide solution, 2% OsO4

CAS: 20816-12-0

Formula: OsO₄aq

Purity: ≥ 99.9%

Color and Shape: Colourless to pale yellow or pale green solution

Molecular weight: 254.20

Ref: 7W-GX3808

Osmium tetroxide

CAS: 20816-12-0

Formula: OsO₄

Purity: ≥ 99.8%

Color and Shape: Pale yellow to yellow crystals

Molecular weight: 254.10

Ref: 7W-GT4710

Osmium(VIII) oxide, 99.9%

CAS: 20816-12-0

Formula: OsO₄

Purity: ≥ 99.90%

Color and Shape: Yellow crystals

Molecular weight: 254.20

Ref: 7W-GX5054

Osmium Tetroxide (4% in H2O)

Controlled Product

CAS: 20816-12-0

Applications Osmium Tetroxide (4% in H2O) is a reagent that is used in the dihydroxylation process in the synthesis of 3-[1-(2,4-Dichlorophenyl)-2-(1H-imidazol-1-yl)ethoxy]-1,2-propanediol (D436535). 3-[1-(2,4-Dichlorophenyl)-2-(1H-imidazol-1-yl)ethoxy]-1,2-propanediol is involved in biological studies as microsomal cytochrome P 450 isoenzymes from Penicillium italicum interaction with sterol demethylation inhibitor fungicides.
References Guan, J., et al.: Pest. Biochem. Physiol., 42, 24 (1992);

Formula: O₄Os

Color and Shape: Single Solution

Molecular weight: 254.23

Ref: TR-O702505

Osmium(VIII) oxide (99.99+%-Os) PURATREM

CAS: 20816-12-0

Osmium(VIII) oxide (99.99+%-Os) PURATREM

Formula: OsO₄

Purity: (99.99+%-Os)

Color and Shape: pale yellow xtl.

Molecular weight: 254.20

Ref: 08-76-2958

Osmic Acid extrapure, 99%

CAS: 20816-12-0

Formula: OsO₄

Purity: min. 99%

Color and Shape: Pale yellow, Crystalline powder

Molecular weight: 254.2

Ref: SR-83577