Bis(trimethylsilyl) acetylenedicarboxylate
Bis(trimethylsilyl) acetylenedicarboxylate (CAS: 76734-92-4) is a valuable synthetic intermediate with the chemical formula C10H18O4Si2 and a molecular weight of 258.42 g/mol. It is recognised for its utility in organic synthesis, offering advantages such as the mild cleavage of its trimethylsilyl groups. This compound is frequently employed as a building block in complex molecule construction within research and development settings.
- IUPAC
- Bis(trimethylsilyl) 2-butynedioate

Synthetic Intermediate
Serves as a versatile intermediate in organic synthesis, facilitating the introduction of specific functional groups or molecular frameworks. Its structure allows for controlled reactions and transformations.
Building Block for Complex Molecules
Utilised as a key building block in the construction of more complex organic molecules. The presence of the alkyne and silyl ester functionalities offers diverse reaction pathways.
Research and Development
Applied in laboratory settings for chemical research, process development, and the exploration of novel synthetic methodologies. Its specific reactivity makes it useful for academic and industrial R&D.
| Molecular weight | 258.42 |
|---|---|
| Empirical formula | C10H18O4Si2 |
| Assay | ≥98.0% |
| Boiling point | 94 °C/0.005 mmHg(lit.) |
| Density | 0.999 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.439(lit.)n20/D 1.439 |
| Storage temperature | 2-8°C |
| Application | Versatile synthetic intermediate with several advantages (e.g. mild cleavage of the TMS-group) |


Hazard statements
- H226Flammable liquid and vapour
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | Eyeshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | 58 °C / 136.4 °F |
| Transport (UN / ADR) | UN 1993C 3 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Bis(trimethylsilyl) acetylenedicarboxylate used for?
+
Bis(trimethylsilyl) acetylenedicarboxylate is primarily used as a versatile synthetic intermediate and building block in organic synthesis, particularly valued for the mild cleavage of its TMS-groups.
What are the CAS number and formula for Bis(trimethylsilyl) acetylenedicarboxylate?
+
The CAS number is 76734-92-4, and the empirical formula is C10H18O4Si2.
What grade and purity does Tech Serve Solutions supply?
+
Tech Serve Solutions supplies Bis(trimethylsilyl) acetylenedicarboxylate with an assay of ≥98.0%. We do not represent this product as meeting USP, BP, or EP pharmacopoeia standards.
How should Bis(trimethylsilyl) acetylenedicarboxylate be handled?
+
This compound is flammable (Flash point 58°C) and can cause skin irritation (H315), serious eye irritation (H319), and respiratory irritation (H335). Handle with appropriate personal protective equipment, including eyeshields and gloves, in a well-ventilated area. Consult the Safety Data Sheet for detailed handling procedures.
Is Bis(trimethylsilyl) acetylenedicarboxylate a controlled substance?
+
The provided data does not indicate that Bis(trimethylsilyl) acetylenedicarboxylate is a controlled substance.
How is Bis(trimethylsilyl) acetylenedicarboxylate packed, shipped, and exported?
+
Bis(trimethylsilyl) acetylenedicarboxylate is typically packed according to industry standards for chemical reagents and is available for global export by Tech Serve Solutions.
How can I request a sample or quote for Bis(trimethylsilyl) acetylenedicarboxylate?
+
To request a sample or quote, please contact the Tech Serve Solutions sales team via our website or direct inquiry channels.
▶ Related products

1-(2-Fluorobenzyl)piperazine
C11H15FN2
Chemical Synthesis
1-(2-Fluorophenyl)biguanide hydrochloride
Chemical Synthesis

1-(2-Fluorophenyl)cyclopropanecarboxylic acid
C10H9FO2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine
C10H13FN2
Chemical Synthesis
1-(2-Fluorophenyl)piperazine monohydrochloride
C10H13FN2 · HCl
Chemical Synthesis
1-(2-Furoyl)-1H-benzotriazole
C11H7N3O2
Chemical Synthesis
1-(2-Furoyl)piperazine
C9H12N2O2
Chemical Synthesis
1-(2-Hydroxy-5-methylphenyl)-3-phenyl-1,3-propanedione
Chemical Synthesis
▶ Explore more

3-Methyl-1,5-di-p-tolyl-1,4-pentazadiene
Chemical Synthesis

3-Methyl-1,5-pentanediol
Chemical Synthesis

3-Methyl-1-(2-methylphenyl)-1H-pyrazol-5-amine
C11H13N3
Chemical Synthesis
3-Methyl-1-(3′-sulfoamidophenyl)-5-pyrazolone
C10H11N3O3S
Chemical Synthesis