Lawesson reagent - ≥97% , CAS No.19172-47-5

CAS: 19172-47-5 Cat. No.: L101823 Molecular Weight: 404.47 Beilstein Registry Number: 1024888 EC Number: 242-855-4
AVAILABLE TO ORDER
GRADE & PURITY ≥97%
Synonyms
2,4-Di(4-methoxyphenyl)-1,3,2lambda5,4lambda5-dithiadiphosphetane-2,4-dithione | A813513 | Choline salt with theophylline (1:1) | Homochlorcyclizine hydrochloride [JAN] | CHEBI:50156 | 2,4-bis(4- methoxyphenyl)-1,3-dithia-2,4-diphosphetane-2,4-disulfide |
Storage
Room temperature,Argon charged,Desiccated,Cool
Shipped In
Normal
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
5g
L101823-5g
2
$9.90
25g
L101823-25g
1
$11.90
100g
L101823-100g
1
$21.90
250g
L101823-250g
2
$48.90
500g
L101823-500g
8-12 wks(?) Production requires sourcing of materials. We appreciate your patience and understanding.
$91.90
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Why this grade

≥97% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Room temperature,Argon charged,Desiccated,Cool Ships Normal 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 2 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

Thiation reagent used to generate tropothione in situ at room temperature and trapping it with dieneophiles.
Sulfurating Reagent,Thiation reagent used recently to generate tropothione in situ at room temperature and trapping it with dieneophiles.

Specifications

Synonyms
2, 4-Di(4-methoxyphenyl)-1, 3, 2lambda5, 4lambda5-dithiadiphosphetane-2, 4-dithione | A813513 | Choline salt with theophylline (1:1) | Homochlorcyclizine hydrochloride [JAN] | CHEBI:50156 | 2, 4-bis(4- methoxyphenyl)-1, 3-dithia-2, 4-diphosphetane-2, 4-disulfide |
Specifications & Purity
≥97%
Storage
Room temperature, Argon charged, Desiccated, Cool
Shipped In
Normal
Purity
≥97%
Names and Identifiers
Canonical SmilesCOC1=CC=C(C=C1)P2(=S)SP(=S)(S2)C3=CC=C(C=C3)OC
IUPAC Name2,4-bis(4-methoxyphenyl)-2,4-bis(sulfanylidene)-1,3,2λ5,4λ5-dithiadiphosphetane
InChIKeyCFHGBZLNZZVTAY-UHFFFAOYSA-N
INCHI1S/C14H14O2P2S4/c1-15-11-3-7-13(8-4-11)17(19)21-18(20,22-17)14-9-5-12(16-2)6-10-14/h3-10H,1-2H3
Isomeric SMILES COC1=CC=C(C=C1)P2(=S)SP(=S)(S2)C3=CC=C(C=C3)OC
WGK Germany 3
UN Number 3134
Packing Group II
Molecular Weight 404.47
Beilstein 1024888
Reaxy-Rn 1024888
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=1024888&ln=

Documentation

📋 Safety Data Sheet (SDS)

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

Download SDS →

✅ 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
SuperclassBenzenoids
ClassPhenol ethers
SubclassAnisoles
Intermediate Tree Nodes Not available
Direct ParentAnisoles
Alternative Parents Phenoxy compounds  Methoxybenzenes  Alkyl aryl ethers  Organothiophosphorus compounds  Organopnictogen compounds  Hydrocarbon derivatives  
Molecular FrameworkAromatic heteromonocyclic compounds
Substituents Phenoxy compound - Methoxybenzene - Anisole - Alkyl aryl ether - Monocyclic benzene moiety - Organothiophosphorus compound - Ether - Organic oxygen compound - Organopnictogen compound - Hydrocarbon derivative - Organophosphorus compound - Organooxygen compound - Aromatic heteromonocyclic compound
DescriptionThis compound belongs to the class of organic compounds known as anisoles. These are organic compounds containing a methoxybenzene or a derivative thereof.
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.

22 results found

Lot NumberCertificate TypeDateItem
E2606306Certificate of AnalysisApr 17, 2026 L101823
E2606307Certificate of AnalysisApr 17, 2026 L101823
E2606309Certificate of AnalysisApr 17, 2026 L101823
E2606310Certificate of AnalysisApr 17, 2026 L101823
E2606314Certificate of AnalysisApr 17, 2026 L101823
F2224057Certificate of AnalysisApr 02, 2026 L101823
F2224058Certificate of AnalysisApr 02, 2026 L101823
L2523070Certificate of AnalysisSep 15, 2025 L101823
J2509590Certificate of AnalysisSep 15, 2025 L101823
J2509589Certificate of AnalysisSep 15, 2025 L101823
J2509588Certificate of AnalysisSep 15, 2025 L101823
J2509587Certificate of AnalysisSep 15, 2025 L101823
J2126734Certificate of AnalysisAug 11, 2025 L101823
G2522045Certificate of AnalysisFeb 27, 2025 L101823
D2503445Certificate of AnalysisFeb 27, 2025 L101823
D2503431Certificate of AnalysisFeb 27, 2025 L101823
D2503430Certificate of AnalysisFeb 27, 2025 L101823
D2503429Certificate of AnalysisFeb 27, 2025 L101823
F2224059Certificate of AnalysisMar 29, 2022 L101823
J2424168Certificate of AnalysisMar 29, 2022 L101823
F2224045Certificate of AnalysisMar 29, 2022 L101823
L2404119Certificate of AnalysisMar 29, 2022 L101823

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Chemical and Physical Properties
SolubilityInsoluble in water.
SensitivityMoisture sensitive.
Melt Point(°C)228-230°C
Molecular Weight404.500 g/mol
XLogP36.100
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count6
Rotatable Bond Count4
Exact Mass403.935 Da
Monoisotopic Mass403.935 Da
Topological Polar Surface Area133.000 Ų
Heavy Atom Count22
Formal Charge0
Complexity425.000
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 Count1
Citations of This Product
References
1. Liu Shikun, Zhang Lili, Gao Jigang, Zhou Jie.  (2013)  Synthesis and Analytical Application of a Novel Fluorescent Hg2+ Probe 3′, 6′-Bis(Diethylamino)-2-((2,4-Dimethoxybenzylidene)Amino)Spiro[Isoindoline-1,9′-Xanthene]-3-Thione.  JOURNAL OF FLUORESCENCE,  23  (5): (989-996).  [PMID:23657472] [10.1007/s10895-013-1225-7]
2. Jiayue Zhou, Dong Li, Yanqun Xu, Xiaochen Zhang, Lei Wang, Lin Zhou, Liang Zou, Zisheng Luo.  (2024)  Biomolecule-functionalized polydiacetylene assembly for visual and on-site sensing of (E)-2-hexenal in fruits.  JOURNAL OF FOOD SCIENCE,  89  (12): (9271-9282).  [PMID:39674853] [10.1111/1750-3841.17395]
Solution Calculators
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