(Methylthio)acetaldehyde dimethyl acetal
(Methylthio)acetaldehyde dimethyl acetal (CAS: 40015-15-4), with the molecular formula CH3SCH2CH(OCH3)2 and a molecular weight of 136.21 g/mol, is a valuable organic building block. This acetal derivative is utilised in various chemical synthesis studies, offering a specific functional group arrangement for complex molecule construction. It is supplied by Tech Serve Solutions for research and development purposes.
- IUPAC
- 1,1-Dimethoxy-2-(methylthio)ethane
- Synonyms
- 1,1-Dimethoxy-2-(methylthio)ethane

Chemical Synthesis Intermediate
(Methylthio)acetaldehyde dimethyl acetal serves as a versatile intermediate in organic synthesis. Its acetal and thioether functionalities allow for participation in a range of chemical transformations for the construction of more complex molecular structures.
Building Block for Heterocycles
This compound can be employed as a building block in the synthesis of sulfur-containing heterocyclic compounds. The presence of both a thioether and an acetal group provides reactive sites for cyclisation reactions.
Research and Development
Utilised in laboratory settings for research purposes, (Methylthio)acetaldehyde dimethyl acetal aids in exploring novel synthetic pathways and developing new chemical entities.
| Molecular weight | 136.21 |
|---|---|
| Linear formula | CH3SCH2CH(OCH3)2 |
| Assay | 97% |
| Boiling point | 59-60 °C/13 mmHg(lit.) |
| Density | 1.022 g/mL at 25 °C(lit.) |
| Refractive index | n20/D 1.4528(lit.) |
| Application | (Methylthio)acetaldehyde dimethyl acetal may be used in chemical synthesis studies. |


Hazard statements
- H225Highly flammable liquid and vapour
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P210Keep away from heat, sparks and open flames. No smoking
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Flash point | -19 °C / -2.2 °F |
| Transport (UN / ADR) | UN 1993BF 3 / PGII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | F,Xi |
| Risk statements (R) | 11-36/37/38 |
| Safety statements (S) | 16-26-36/37/39 |
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 (Methylthio)acetaldehyde dimethyl acetal used for?
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(Methylthio)acetaldehyde dimethyl acetal is used in chemical synthesis studies as an organic building block.
What is the CAS number and molecular formula for (Methylthio)acetaldehyde dimethyl acetal?
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The CAS number is 40015-15-4 and the molecular formula is CH3SCH2CH(OCH3)2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies (Methylthio)acetaldehyde dimethyl acetal with an assay of 97%. This is a technical grade chemical and is not represented as USP, BP, EP, or pharmaceutical grade.
What are the primary safety hazards associated with (Methylthio)acetaldehyde dimethyl acetal?
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(Methylthio)acetaldehyde dimethyl acetal is a flammable liquid and vapour (H225). It causes skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335). Appropriate personal protective equipment, including eyeshields, gloves, and respiratory protection, should be used when handling this chemical. Always consult the Safety Data Sheet (SDS) for full hazard information.
How is (Methylthio)acetaldehyde dimethyl acetal shipped and exported?
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(Methylthio)acetaldehyde dimethyl acetal is shipped as a flammable liquid, UN 1993, Hazard Class 3, Packing Group II. Tech Serve Solutions is a global supplier and exporter, adhering to all international shipping regulations.
How can I request a sample or obtain a quote for (Methylthio)acetaldehyde dimethyl acetal?
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To request a sample or a quotation for (Methylthio)acetaldehyde dimethyl acetal, please contact our sales team via the website or direct inquiry. Please include the product name and CAS number (40015-15-4) in your request.
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