Fluoromethane-13C
Fluoromethane-13C (CAS: 20666-44-8), with the formula <sup>13</sup>CH<sub>3</sub>F and a molecular weight of 35.03 g/mol, is a valuable isotopically labelled compound. This stable isotope compound is primarily utilised in chemical synthesis and as a specialty gas. Its unique isotopic composition makes it suitable for tracing and mechanistic studies in various research applications.
- IUPAC
- Methyl-13C fluoride
- Synonyms
- Methyl-13C fluoride

Chemical Synthesis
Fluoromethane-13C serves as a labelled building block in organic synthesis. Its incorporation allows for detailed mechanistic studies and the synthesis of isotopically enriched target molecules for research.
Isotope Labelling Studies
Utilised in academic and industrial research, this compound aids in understanding reaction pathways and metabolic processes. The 13C label provides a distinct marker for detection and quantification.
Specialty Gas Applications
As a specialty gas, Fluoromethane-13C can be employed in specific analytical or experimental setups requiring a precisely labelled gaseous compound.
| Molecular weight | 35.03 |
|---|---|
| Linear formula | 13CH3F |
| Boiling point | −77.9 °C(lit.) |
| Vapour pressure | 44.2 atm (21.1 °C) |
| Vapour density | 1.231 (vs air) |
| Melting point | −141.8 °C(lit.) |


Hazard statements
- H220Extremely flammable gas
- H280Contains gas under pressure; may explode if heated
Precautionary statements
- P210Keep away from heat, sparks and open flames. No smoking
- P410Protect from sunlight
| Protective equipment | Eyeshields, Faceshields, Gloves, half-mask respirator (EU), half-mask respirator (US), multi-purpose combination respirator cartridge (US) |
|---|---|
| Transport (UN / ADR) | UN 2454 2.1 |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | F+ |
| Risk statements (R) | 12 |
| Safety statements (S) | 16-33 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
| Mol Wt | mol wt 35.02 by atom % calculation |
|---|---|
| Isotopic Purity | 99 atom % 13C |
| Mass Shift | M+1 |
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 Fluoromethane-13C used for?
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Fluoromethane-13C is primarily used in chemical synthesis and for isotope labelling studies in research, allowing for mechanistic investigations and the creation of isotopically enriched compounds.
What are the CAS number and formula for Fluoromethane-13C?
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The CAS number for Fluoromethane-13C is 20666-44-8, and its formula is <sup>13</sup>CH<sub>3</sub>F.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Fluoromethane-13C with an isotopic purity of 99 atom % 13C. We do not represent this product as USP, BP, or EP grade.
How should Fluoromethane-13C be handled safely?
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Fluoromethane-13C is an extremely flammable gas and contains gas under pressure (H220, H280). Handle with extreme caution, avoiding ignition sources and ensuring proper ventilation. Appropriate personal protective equipment, including eyeshields, faceshields, gloves, and respiratory protection, is essential.
Is Fluoromethane-13C packed and shipped by Tech Serve Solutions?
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Yes, Tech Serve Solutions, as a global supplier and exporter, provides Fluoromethane-13C for international shipment, adhering to all relevant transport regulations.
How can I request a quote or sample for Fluoromethane-13C?
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To request a quote or sample, please contact our sales team through the website or by phone, providing your specific requirements and shipping details.
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