C2H6O3S
110.13 g/mol
Research ReagentDanger
METHYL METHANESULFONATE
CAS66-27-3EC200-625-0
Category
Research Reagent
Compound Class
Ester
Primary Use
Research Compound
Methyl methanesulfonate is a research reagent primarily used in laboratory studies as an experimental mutagen and teratogen. It is also recognized as a potential carcinogen based on expert evaluation.
experimental mutagenteratogencatalyst for esterification, polymerization, and alkylation
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
Restricted or banned substances
Substances on this list are banned or restricted under the named regulation. This page is a compliance reference — verify your obligations under applicable law.
Relevant lists:California Proposition 65
CAS 66-27-3
Related Compounds
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CAS66-71-7
research compound
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CAS66-83-1
research compound
ReferenceSame Category
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research compound
ReferenceSame Category
L-2-aminopentanoic acid zwitterion
CAS6600-40-4
research compound
Safety Reference
Danger
H301Toxic if swallowed
H315Causes skin irritation
H317May cause an allergic skin reaction
H319Causes serious eye irritation
H335May cause respiratory irritation
H340May cause genetic defects
H350May cause cancer
H351Suspected of causing cancer
H361Suspected of damaging fertility or the unborn child
H373May cause damage to organs through prolonged or repeated exposure
H411Toxic to aquatic life with long lasting effects
Regulatory Compliance1
- California Proposition 65USRegulation
Customs Tariff Classification
The international HS code for METHYL METHANESULFONATE (CAS 66-27-3) is 2905.11.
HS code (international, 6-digit)
2905.11
EU CN code (8-digit)
2905 11 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
methyl methanesulfonate
InChIKey
MBABOKRGFJTBAE-UHFFFAOYSA-N
SMILES
COS(=O)(=O)C
Synonyms (31)
- MMS
- Dimethylsulfonate
- METHYL METHANESULFONATE
- Mesilate, Methyl
- Mesylate, Methyl
- Methanesulfonate, Methyl
- Methyl Methylenesulfonate
- Methyl mesylate
- Methyl methanesulfonic acid
- Methyl methanesulphonate
- Methyl methansulfonate
- Methyl methansulphonate
- Methylmesilate
- Methylmethansulfonat
- Methylmethansulfonat [German]
- as-Dimethyl sulfite
- as-Dimethyl sulphite
- dimethylsulfonic acid
- methyl methylsulfonate