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Merck

I6256

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
UNSPSC Code:
12352100
NACRES:
NA.21
PubChem Substance ID:
24896086
MDL number:
MFCD00039013
Beilstein/REAXYS Number:
3620079
Assay:
≥98% (TLC)
Form:
powder
Solubility:
H2O: 100 mg/mL

Key Documents

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InChI

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

SMILES string

N=C1SCCC1.Cl

InChI key

ATGUDZODTABURZ-UHFFFAOYSA-N

assay

≥98% (TLC)

form

powder

impurities

≤5% Free sulfhydryl groups

mp

198-201 °C (lit.)

solubility

H2O: 100 mg/mL

functional group

thioether

storage temp.

2-8°C

Quality Level

200

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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

signalword

Danger

hcodes

H301

Hazard Classifications

Acute Tox. 3 Oral

Storage Class

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

ppe

Eyeshields, Gloves, type N95 (US)

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Certificates of Analysis (COA)

Lot/Batch Number
0000519402
0000519402
0000497262
0000497261
0000497260

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