1,1-Bis(methylthio)-2-nitroethylene
1,1-Bis(methylthio)-2-nitroethylene (CAS: 13623-94-4) is an organic compound with the molecular formula O2NCH=C(SCH3)2 and a molecular weight of 165.23 g/mol. Also known as Nitroketene dimethyl mercaptal, this chemical is a useful building block in organic synthesis. It is primarily utilised in the development of novel chemical entities and as an intermediate in the production of more complex molecules within research and industrial settings.
- IUPAC
- Nitroketene dimethyl mercaptal
- Synonyms
- Nitroketene dimethyl mercaptal

Organic Synthesis Intermediate
Serves as a versatile intermediate for constructing complex organic molecules. Its unique structure allows for various chemical transformations, making it valuable in synthetic chemistry research.
Building Block for Heterocycles
Can be employed in the synthesis of heterocyclic compounds, which are prevalent in pharmaceuticals and agrochemicals. This application leverages its reactive functional groups.
Research and Development
Utilised in academic and industrial research laboratories for exploring new synthetic routes and developing novel chemical compounds with potential applications.
| Molecular weight | 165.23 |
|---|---|
| Linear formula | O2NCH=C(SCH3)2 |
| Assay | 95% |
| Melting point | 125-127 °C(lit.) |

Hazard statements
- 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 | dust mask type N95 (US), Eyeshields, Gloves |
|---|---|
| Transport (UN / ADR) | UN 3335 |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| Safety statements (S) | 26-37/39 |
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 1,1-Bis(methylthio)-2-nitroethylene used for?
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1,1-Bis(methylthio)-2-nitroethylene is primarily used as a building block and intermediate in organic synthesis for the development of new chemical entities and complex molecules.
What is the CAS number and formula for 1,1-Bis(methylthio)-2-nitroethylene?
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The CAS number is 13623-94-4 and the linear formula is O2NCH=C(SCH3)2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 1,1-Bis(methylthio)-2-nitroethylene with an assay of 95%. This is a technical grade and is not represented as USP, BP, or EP.
How should 1,1-Bis(methylthio)-2-nitroethylene be handled safely?
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Handle with appropriate personal protective equipment, including a dust mask (N95 recommended), eyeshields, and gloves. Avoid breathing dust and ensure adequate ventilation. It is classified as a Warning with hazards including skin, eye, and respiratory irritation (H315, H319, H335).
Is 1,1-Bis(methylthio)-2-nitroethylene a controlled substance?
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The provided data does not indicate that 1,1-Bis(methylthio)-2-nitroethylene is a controlled substance.
How is 1,1-Bis(methylthio)-2-nitroethylene packed and exported?
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Products are carefully packed according to international shipping regulations and exported globally by Tech Serve Solutions, a specialist supplier since 1998.
How can I request a quote or sample?
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Please contact our sales team via the website or phone to request a quote or sample of 1,1-Bis(methylthio)-2-nitroethylene.
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