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Key Documents

183083

Sigma-Aldrich

Dibutyltin(IV) oxide

98%

Synonym(s):

Dibutyloxotin

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About This Item

Linear Formula:
(CH3CH2CH2CH2)2SnO
CAS Number:
Molecular Weight:
248.94
Beilstein/REAXYS Number:
4126243
EC Number:
MDL number:
UNSPSC Code:
12352103
PubChem Substance ID:
NACRES:
NA.22

Quality Level

assay

98%

autoignition temp.

534 °F

mp

≥300 °C (lit.)

SMILES string

CCCC[Sn](=O)CCCC

InChI

1S/2C4H9.O.Sn/c2*1-3-4-2;;/h2*1,3-4H2,2H3;;

InChI key

JGFBRKRYDCGYKD-UHFFFAOYSA-N

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General description

Dibutyltin(IV) oxide is an organotin compound that is commonly used as a Lewis acid catalyst in organic synthesis. For instance, it can be used for the formation of carbon-carbon bonds through coupling reactions and in the preparation of esters from carboxylic acids and alcohols. It also finds use in allylation reactions, cycloaddition reactions, and ring-opening polymerizations.

signalword

Danger

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Chronic 2 - Eye Dam. 1 - Muta. 2 - Repr. 1B - Skin Irrit. 2 - Skin Sens. 1 - STOT RE 1 - STOT SE 1

target_organs

thymus

Storage Class

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges


Certificates of Analysis (COA)

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Qinghui Wang et al.
Carbohydrate research, 342(17), 2657-2663 (2007-09-26)
Regioselective formation of 6-O-acylsucroses and 6,3'-di-O-acylsucroses in one pot with good yields was achieved for the first time by a typical acylation method of sucrose via its dibutylstannylene acetal. Pure monoesters at OH-6 and diesters at OH-6,3' obtained by these
Shao-Min Wang et al.
Steroids, 72(1), 26-30 (2006-12-30)
Dibutyltin oxide (DBTO) was first utilized for the deacetylation of steroid and diterpene esters. The results showed the deprotection of acetylated steroids and diterpenes separately with moderate catalysis dibutyltin oxide in methanol selectively removed part acetyl groups of these substrates
Synthesis of the alpha-Neu5Ac-(2----6)-Gal structure. Facile 6-O-sialylation following stannylene activation of an unprotected D-galactopyranoside.
T Murase et al.
Carbohydrate research, 195(1), 134-137 (1989-12-21)
K Kiyoshima et al.
Chemical & pharmaceutical bulletin, 37(4), 861-865 (1989-04-01)
4''-O-Acyl-, 4''-O-alkyl- and 4''-deoxy-tylosin derivatives were synthesized using 2'-O-acetyl-3'',4''-O-(dibutyl-stannio)tylosin as a synthetic intermediate. The in vitro biological evaluation showed that the new derivatives were active against macrolide-resistant clinical isolates of bacteria and mycoplasmas, and that they were resistant to hepatic
[Experimental toxicity of indium formate and a mixture of indium formate-dibutyltin oxide (90-10) in the rat].
J P Anger et al.
Journal de toxicologie clinique et experimentale, 8(6), 401-418 (1988-11-01)

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