2-Iminothiolane hydrochloride - ≥98% , CAS No.4781-83-3

CAS: 4781-83-3 Cat. No.: I106793 Formula: C4H7NS·HCl Molecular Weight: 137.63 Beilstein Registry Number: 3620079 EC Number: 800-330-2
AVAILABLE TO ORDER
GRADE & PURITY ≥98%
Synonyms
2IT | 2(3H)-Thiophenimine, hydrochloride | NCGC00260958-01 | 2-IT | Orafuran | Trauts reagent | Traut's reagent | AKOS015898834 | DTXSID60524217 | 2(3H)-Thiophenimine, dihydrochloride | PD171658 | 2-Iminothiolane hydrochloride | ATGUDZODTABURZ-UHFFFAOYSA-
Storage
Store at 2-8°C,Argon charged
Shipped In
Wet ice
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Size
USA
Germany (EU)*
Price
Qty
100mg
I106793-100mg
3 In stock
—
$43.90
500mg
I106793-500mg
3 In stock
—
$129.90
1g
I106793-1g
3 In stock
—
$199.90
2.5g
I106793-2.5g
1 In stock
—
$399.90
10g
I106793-10g
Made to order · 8–12 wks
$999.90
Enter a quantity for the sizes you want to add.
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Why this grade

≥98% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Store at 2-8°C,Argon charged Ships Wet ice Check lot-specific COA for exact specifications.

📋

Quality documents

SDS, COA, datasheet, and spec sheet available for download. Lot-specific COA accessible via lot number lookup.

📚

Literature proof

Cited in 40 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

2-Iminothiolane, Hydrochloride is a thiolating agent that is useful in cross-linking proteins.
A thiolane derivitization agent.


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.

Specifications

Synonyms
2IT | 2(3H)-Thiophenimine, hydrochloride | NCGC00260958-01 | 2-IT | Orafuran | Trauts reagent | Traut's reagent | AKOS015898834 | DTXSID60524217 | 2(3H)-Thiophenimine, dihydrochloride | PD171658 | 2-Iminothiolane hydrochloride | ATGUDZODTABURZ-UHFFFAOYSA-
Specifications & Purity
≥98%
Biochemical and Physiological Mechanisms
RNA-protein crosslinking (sulfhydryl addition) agent. Reacts with primary amines. Maintains charge properties similar to the original amino group.
Storage
Store at 2-8°C,Argon charged
Shipped In
Wet ice
This product requires cold chain shipping. Ground and other economy services are not available.
Note
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20°C. Generally, these will be useable for up to one month. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour. Need more advice on solubility, usage and handling? Please visit our frequently asked questions (FAQ) page for more details.
Purity
≥98%
Names and Identifiers
Pubchem Sid
Pubchem Sid Url
https://pubchem.ncbi.nlm.nih.gov/substance/508808046
Canonical Smiles
C1CC(=N)SC1.Cl
IUPAC Name
thiolan-2-imine;hydrochloride
InChIKey
ATGUDZODTABURZ-UHFFFAOYSA-N
INCHI
1S/C4H7NS.ClH/c5-4-2-1-3-6-4;/h5H,1-3H2;1H
Isomeric SMILES
C1CC(=N)SC1.Cl
WGK Germany
3
Molecular Weight
137.63
Beilstein
3620079
Reaxy-Rn
3620079
Reaxys-RN_link_address
https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=3620079&ln=

Documentation

📋 Safety Data Sheet (SDS)

Comprehensive hazard, handling, storage, and regulatory compliance document.

<<<<<<< HEAD Download SDS → ======= Download SDS → >>>>>>> release248-p3

✅ Certificate of Analysis (COA)

Lot-specific quality data. Enter your lot number to retrieve the exact COA.

Look up COA →

📊 Datasheet

Quick-reference summary of product specifications and applications.

View datasheet →

🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

View spec sheet →

Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomOrganic compounds
SuperclassOrganosulfur compounds
ClassImidothioesters
SubclassImidothiolactones
Intermediate Tree Nodes Not available
Direct ParentImidothiolactones
Alternative Parents Thiolanes  Organonitrogen compounds  Hydrochlorides  Hydrocarbon derivatives  
Molecular FrameworkAliphatic heteromonocyclic compounds
Substituents Imidothiolactone - Thiolane - Organoheterocyclic compound - Organic nitrogen compound - Hydrocarbon derivative - Hydrochloride - Organonitrogen compound - Aliphatic heteromonocyclic compound
DescriptionThis compound belongs to the class of organic compounds known as imidothiolactones. These are analogs of imidolactones where the oxygen atom is replaced by a sulfur atom. They have the general structure RC(=N)SR' where the central carbon atom is part of a ring. R,R' = organyl group.
External Descriptors Not available
3D Structure
Interactive Chemical Structure Model





Certificates (CoA,COO,BSE/TSE and Analysis Chart)
C of A & Other Certificates(BSE/TSE, COO):
Analytical Chart:

Find and download the COA for your product by matching the lot number on the packaging.

24 results found

Lot NumberCertificate TypeDateItem
I2610604I2610604Certificate of AnalysisAug 21, 2026 I106793
I2610602I2610602Certificate of AnalysisAug 21, 2026 I106793
I2610601I2610601Certificate of AnalysisAug 21, 2026 I106793
I2610600I2610600Certificate of AnalysisAug 21, 2026 I106793
I2610599I2610599Certificate of AnalysisAug 21, 2026 I106793
L2509015L2509015Certificate of AnalysisNov 25, 2024 I106793
K2525117K2525117Certificate of AnalysisNov 25, 2024 I106793
L2409444L2409444Certificate of AnalysisNov 25, 2024 I106793
C2630125C2630125Certificate of AnalysisNov 25, 2024 I106793
L2409445L2409445Certificate of AnalysisNov 25, 2024 I106793
L2409446L2409446Certificate of AnalysisNov 25, 2024 I106793
L2409447L2409447Certificate of AnalysisNov 25, 2024 I106793
L2321451L2321451Certificate of AnalysisDec 02, 2023 I106793
L2321447L2321447Certificate of AnalysisDec 02, 2023 I106793
L2321448L2321448Certificate of AnalysisDec 02, 2023 I106793
L2321449L2321449Certificate of AnalysisDec 02, 2023 I106793
L2321450L2321450Certificate of AnalysisDec 02, 2023 I106793
B2313553B2313553Certificate of AnalysisDec 09, 2022 I106793
I2311030I2311030Certificate of AnalysisDec 09, 2022 I106793
B2313642B2313642Certificate of AnalysisDec 09, 2022 I106793
B2313592B2313592Certificate of AnalysisDec 09, 2022 I106793
B2313557B2313557Certificate of AnalysisDec 09, 2022 I106793
B2313552B2313552Certificate of AnalysisDec 09, 2022 I106793
J2227069J2227069Certificate of AnalysisNov 27, 2021 I106793
Chemical and Physical Properties
SolubilitySoluble in Methanol and Water.
SensitivityMoisture sensitive;Heat sensitive
Melt Point(°C)198-201°C
Molecular Weight137.630 g/mol
XLogP3
Hydrogen Bond Donor Count2
Hydrogen Bond Acceptor Count2
Rotatable Bond Count0
Exact Mass137.007 Da
Monoisotopic Mass137.007 Da
Topological Polar Surface Area49.200 Ų
Heavy Atom Count7
Formal Charge0
Complexity69.900
Isotope Atom Count0
Defined Atom Stereocenter Count0
Undefined Atom Stereocenter Count0
Defined Bond Stereocenter Count0
Undefined Bond Stereocenter Count0
The total count of all stereochemical bonds0
Covalently-Bonded Unit Count2
Documents & Articles
Citations of This Product
Solution Calculators
Reviews

Customer Reviews

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