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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 13046Generated: October 23, 2026

2-Mesitylenesulfonyl chloride

2,4,6-TRIMETHYLBENZENESULFONYL CHLORIDE · MESITYLENESULFONYL CHLORIDE · 2,4,6-trimethylbenzene-1-sulfonyl chloride · Mesitylsulfonyl chloride · enesuL · MTS-CL · SKL741 · 2-MesityL

https://huagongshe.com/en/chemical/13046

2-Mesitylenesulfonyl chloride molecular structure

Identifiers & Physical Properties

CAS No.773-64-8
Molecular formulaC9H11ClO2S
Average molar mass218.7 g/mol
Monoisotopic mass218.0168285 g/mol
SMILESCc1cc(C)c(S(=O)(=O)Cl)c(C)c1
InChIKeyPVJZBZSCGJAWNG-UHFFFAOYSA-N
PubChem CID13046
EC No.212-257-8
DTXSIDDTXSID90228019

Chemical & Physical Properties

XLogP3
Topological polar surface area42.5
Hydrogen bond donors0
Hydrogen bond acceptors2
Rotatable bonds1
Heavy atoms13
Formal charge0
Complexity256
Melting point55-57 °C(lit.)
Boiling point150°C/20mm
Density1.4386 (rough estimate)
Refractive index1.5500 (estimate)
Flash point>230 °F
Storage conditionsKeep in dark place,Inert atmosphere,2-8°C
SolubilitySoluble in toluene (almost transparency).insoluble
Physical stateCrystalline Powder
ColorWhite to gray
SensitivityMoisture Sensitive
BRN1107601
InChI1S/C9H11ClO2S/c1-6-4-7(2)9(8(3)5-6)13(10,11)12/h4-5H,1-3H3
InChIKeyPVJZBZSCGJAWNG-UHFFFAOYSA-N
SMILESCc1cc(C)c(c(C)c1)S(Cl)(=O)=O
LogP (partition coefficient)2.738 (est)
CAS DataBase Reference773-64-8(CAS DataBase Reference)
EWG's Food Scores1
FDA UNII93TFV87MP5
NIST Chemistry Reference2-Mesitylenesulfonyl chloride(773-64-8)
UNSPSC Code12352100
NACRESNA.22
GHS pictogramGHS05
Signal wordDanger
GHS hazard statementsH314
GHS precautionary statementsP260-P280-P303+P361+P353-P304+P340+P310-P305+P351+P338-P363
Personal protective equipment (PPE)Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges
Hazard symbolsC
Risk statements (R)34-29
Safety statements (S)22-26-27-36/37/39-45
UN transport numberUN 3261 8/PG 2
Water hazard class (WGK)3
RTECS numberDB8930000
F10-21
Hazard NoteCorrosive
Hazard class8Skin Corr. 1B
Packing groupII
Customs code29049020
Storage class8A - Combustible corrosive hazardous materials
Limited quantities1 Kg (2.2 lbs) (solid)
Excepted quantitiesMax Inner Pack (30g or 30ml) and Max Outer Pack (500g or 500ml)

Safety & Regulations

F10-21
Personal protective equipment (PPE)Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges
Water hazard class (WGK)3
RTECS numberDB8930000
UN transport numberUN 3261 8/PG 2
Customs code29309070
Risk statements (R)34-29
Signal wordDanger
GHS pictogramGHS05
Hazard symbolsC
hazard_noteCorrosive
Safety statements (S)22-26-27-36/37/39-45
Hazard class8Skin Corr. 1B
Storage class8A - Combustible corrosive hazardous materials
Packing groupII
GHS hazard statementsH314
Limited quantities1 Kg (2.2 lbs) (solid)
Excepted quantitiesMax Inner Pack (30g or 30ml) and Max Outer Pack (500g or 500ml)
GHS precautionary statementsP260-P280-P303+P361+P353-P304+P340+P310-P305+P351+P338-P363

Applications & Uses

Uses

Coupling reagent in polynucleotide synthesis.1

Uses

Mesitylene-2-sulfonyl chloride is used as reagent for intramolecular lactamizations and lactonization. It also acts as a reagent for protecting guanidino groups and tryptophan. It is used as coupling reagent in polynucleotide synthesis