Trimethyloxonium tetrafluoroborate , 96% , 420-37-1

CAS NO.：420-37-1

Empirical Formula: C3H9BF4O

Molecular Weight: 147.91

MDL number: MFCD00011798

EINECS: 206-994-4

PRODUCT Properties

• Melting point: 200 °C
• storage temp.: Store at +2°C to +8°C.
• solubility: Soluble in nitrobenzene, nitromethane, chloroform, hot acetone, liquid sulfur dioxide. Slightly soluble in dichloromethane. Insoluble in common organic solvents.
• form: Crystals
• color: White to off-white
• Sensitive: Moisture Sensitive
• BRN: 3597303
• InChI: InChI=1S/C3H9O.BF4/c1-4(2)3;2-1(3,4)5/h1-3H3;/q+1;-1
• InChIKey: JDFKFXJJAIJXPP-UHFFFAOYSA-M
• SMILES: [B-](F)(F)(F)F.[O+](C)(C)C
• CAS DataBase Reference: 420-37-1(CAS DataBase Reference)
• EPA Substance Registry System: Oxonium, trimethyl-, tetrafluoroborate(1-) (420-37-1)

Description and Uses

Trimethyloxonium tetrafluoroborate (TMO), a trialkyloxonium salt, is a white salt at ambient temperature that can be added directly to reaction media to carry out the methylation of reactive, acidic analytes. The main drawback associated with the employment of TMO is the generation of tetrafluoroboric acid (HBF4), which may interfere with the analysis of acid-sensitive analytes and cause column degradation over time. However, the effects of this acid can be countered by neutralization with inorganic bases like sodium or potassium bicarbonate during the sample preparation step before instrument injection. This approach has proven crucially useful in analysing phosphonic and sulfonic acids related to organophosphorus-based nerve agents. TMO could be employed as a derivatizing agent in the methylation of a panel of environmentally relevant chlorinated phenols. It is also used in neutral and basic solutions for the selective methylation of the carboxyl groups of protohemin IX, hematohemin, and heme a[1-2].

Trimethyloxonium Tetrafluoroborate is a trialkylated oxonium used as a methylation agent in organic synthesis. It is a reagent for the methylation of hydroxyl groups recently used in a complex, multistep synthesis directed towards spirastrellolide, a marine natural product.

Safety

• Symbol(GHS): GHS05
• Signal word: Danger
• Hazard statements: H314
• Precautionary statements: P260-P280-P303+P361+P353-P304+P340+P310-P305+P351+P338-P363
• Hazard Codes: C
• Risk Statements: 14-34
• Safety Statements: 26-36/37/39-43-45
• RIDADR: UN 3261 8/PG 2
• WGK Germany: 3
• F: 3-10-21
• Hazard Note: Corrosive/Freeze
• TSCA: Yes
• HazardClass: 8
• PackingGroup: II
• HS Code: 29420000