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I6256

Sigma-Aldrich

2-Iminothiolane hydrochloride

≥98% (TLC), powder

Synonym(s):

2-Thiolanimine hydrochloride, 2IT, Dihydro-2(3H)-thiophenimine hydrochloride, Traut’s reagent

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About This Item

Empirical Formula (Hill Notation):
C4H7NS · HCl
CAS Number:
4781-83-3
Molecular Weight:
137.63
Beilstein:
3620079
MDL number:
MFCD00039013
UNSPSC Code:
12352100
PubChem Substance ID:
24896086
NACRES:
NA.21

Assay

≥98% (TLC)

form

powder

impurities

≤5% Free sulfhydryl groups

mp

198-201 °C (lit.)

solubility

H2O: 100 mg/mL

storage temp.

2-8°C

SMILES string

N=C1SCCC1.Cl

InChI

1S/C4H7NS.ClH/c5-4-2-1-3-6-4;/h5H,1-3H2;1H

InChI key

ATGUDZODTABURZ-UHFFFAOYSA-N

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General description

2-Iminothiolane hydrochloride (2-IT.HCl), a protein modification reagent, is commonly employed to attach thiol groups to proteins and peptides. Raman spectroscopic analysis of hair keratin fibers modified with 2-IT.HCl showed the formation of new disulfide groups.

Application

2-Iminothiolane hydrochloride has been used in the synthesis of thiolated PEG (poly(ethylene glycol). It may be used to synthesize PLA-SH (polyethylene glycol-thiol) and PLA-PEG-SH (polyethylene glycol–polylactic acid-thiol).
Thiolating reagent for primary amines. Reacts at pH 7-10 by amidine bond to present free sulfhydryl. Useful in preparation of disulfide and/or thioether linked conjugates.

Other Notes

Note that the amidine linkage preserves original primary amine positive charge. Incorporates a five atom linker.

Pictograms

Skull and crossbones
GHS06

Signal Word

Danger

Hazard Statements

H301

Hazard Classifications

Acute Tox. 3 Oral

Storage Class Code

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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