Trimethylsilyldiazomethane
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Trimethylsilyldiazomethane
IUPAC name	diazomethyl-trimethylsilane
Identifiers
CAS number	[18107-18-1]
PubChem	167693
SMILES	C[Si](C)(C)C=[N+]=[N-]
Properties
Molecular formula	C4H10N2Si
Molar mass	114.22 g/mol
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox references

Trimethylsilyldiazomethane, (CH₃)₃SiCHN₂, is an organic compound.

It is a safer alternative to diazomethane for the methylation of carboxylic acids. It is commercially available. It has been employed widely in tandem with GC-MS for the analysis of various carboxylic compounds which are ubiquitous in nature. The fact that the reaction is rapid and occurs readily makes it attractive. However, it can form artifacts the complicate spectral interpretation.

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