3-Mercapto-1,2,4-triazole - ≥97% , CAS No.3179-31-5

CAS: 3179-31-5 Cat. No.: M113506 Molecular Weight: 101.13 Beilstein Registry Number: 107731 EC Number: 221-656-6
AVAILABLE TO ORDER
GRADE & PURITY ≥97%
Synonyms
1,3,4-Triazole-2-thiol | SCHEMBL62313 | S-Triazole-3-thiol | 1,5-dihydro-1,2,4-triazole-5-thione | 4H-1,2,4-Triazole-3-thiol | UNII-RUS62L885R | 2H-[1,2,4]Triazole-3-thiol | 3H-1,2,4-Triazole-3-thione, 1,2-dihydro- | 3-mercaptano-1,2,4-triazole | 3-Thio-1
Storage
Room temperature
Shipped In
Normal
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Size
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Price
Qty
5g
M113506-5g
1-2 wks(?)
Item is derived from our semi-finished stock and is processed in 1-2 weeks.

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M113506-25g
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M113506-100g
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250g
M113506-250g
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500g
M113506-500g
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Why this grade

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

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Storage & shipping

Room temperature Ships Normal Check lot-specific COA for exact specifications.

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Quality documents

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

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Literature proof

Cited in 6 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

1H-1,2,4-Triazole-3-thiol is a mercapto-substituted 1,2,4-triazole ligand and exhibits tautomerism in solution. 1H-1,2,4-Triazole-3-thiol forms novel luminescent polymers with cadmium(II) salts. 1H-1,2,4-Triazole-3-thiol undergoes regioselective S-alkylation to form a series of S-substituted derivatives.
1H-1,2,4-Triazole-3-thiol was used in a study to design a surface enhanced Raman scattering based probe for fast and accurate detection of DNA markers

Specifications

Synonyms
1, 3, 4-Triazole-2-thiol | SCHEMBL62313 | S-Triazole-3-thiol | 1, 5-dihydro-1, 2, 4-triazole-5-thione | 4H-1, 2, 4-Triazole-3-thiol | UNII-RUS62L885R | 2H-[1, 2, 4]Triazole-3-thiol | 3H-1, 2, 4-Triazole-3-thione, 1, 2-dihydro- | 3-mercaptano-1, 2, 4-triazole | 3-Thio-1
Specifications & Purity
≥97%
Storage
Room temperature
Shipped In
Normal
Purity
≥97%
Names and Identifiers
Pubchem Sid488192195
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/488192195
Canonical SmilesC1=NC(=S)NN1
IUPAC Name1,2-dihydro-1,2,4-triazole-3-thione
InChIKeyAFBBKYQYNPNMAT-UHFFFAOYSA-N
INCHI1S/C2H3N3S/c6-2-3-1-4-5-2/h1H,(H2,3,4,5,6)
Isomeric SMILES C1=NC(=S)NN1
WGK Germany 1
RTECS XZ5267500
Molecular Weight 101.13
Beilstein 107731
Reaxy-Rn 107731
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=107731&ln=

Documentation

📋 Safety Data Sheet (SDS)

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

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✅ Certificate of Analysis (COA)

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

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📊 Datasheet

Quick-reference summary of product specifications and applications.

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🔬 Specification Sheet

Full quality attributes and acceptance criteria for this grade.

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Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomOrganic compounds
SuperclassOrganoheterocyclic compounds
ClassAzoles
SubclassTriazoles
Intermediate Tree Nodes Not available
Direct ParentTriazoles
Alternative Parents Triazolines  Heteroaromatic compounds  Azacyclic compounds  Organosulfur compounds  Organopnictogen compounds  Organonitrogen compounds  Hydrocarbon derivatives  
Molecular FrameworkAromatic heteromonocyclic compounds
Substituents Triazoline - Heteroaromatic compound - 1,2,4-triazole - Azacycle - Organic nitrogen compound - Organopnictogen compound - Hydrocarbon derivative - Organosulfur compound - Organonitrogen compound - Aromatic heteromonocyclic compound
DescriptionThis compound belongs to the class of organic compounds known as triazoles. These are compounds containing a five-member aromatic ring of two carbon atoms and three nitrogen atoms.
External Descriptors Not available
3D Structure
Interactive Chemical Structure Model





Mechanisms of Action
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.

17 results found

Lot NumberCertificate TypeDateItem
J1811201Certificate of AnalysisMay 21, 2026 M113506
A2206899Certificate of AnalysisOct 13, 2025 M113506
A2206905Certificate of AnalysisOct 13, 2025 M113506
A2206917Certificate of AnalysisOct 13, 2025 M113506
A2206894Certificate of AnalysisOct 13, 2025 M113506
I2123297Certificate of AnalysisJul 10, 2025 M113506
F2101222Certificate of AnalysisMar 04, 2025 M113506
F2101225Certificate of AnalysisMar 04, 2025 M113506
F2101223Certificate of AnalysisMar 04, 2025 M113506
I2423383Certificate of AnalysisJun 24, 2024 M113506
I2423384Certificate of AnalysisJun 24, 2024 M113506
D2430010Certificate of AnalysisDec 14, 2021 M113506
D2320089Certificate of AnalysisDec 14, 2021 M113506
D2320083Certificate of AnalysisDec 14, 2021 M113506
I2506094Certificate of AnalysisDec 14, 2021 M113506
B2505145Certificate of AnalysisDec 14, 2021 M113506
K2517236Certificate of AnalysisDec 14, 2021 M113506

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Chemical and Physical Properties
SolubilityH2O: soluble50 g/L
Melt Point(°C)221-222°C
Molecular Weight101.130 g/mol
XLogP3-0.200
Hydrogen Bond Donor Count2
Hydrogen Bond Acceptor Count1
Rotatable Bond Count0
Exact Mass101.005 Da
Monoisotopic Mass101.005 Da
Topological Polar Surface Area68.500 Ų
Heavy Atom Count6
Formal Charge0
Complexity97.000
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. Ye Jia, Donghai Zhu, Qifan Yang, Xu Liu, Zahra Gholami, Mohammadtaghi Vakili, Shuangxi Zhou, Wei Wang.  (2023)  Triazole and methylthio modified covalent organic frameworks for enhancing Hg(II) adsorption from water.  Materials Today Communications,      [PMID:] [10.1016/j.mtcomm.2023.107976]
2. Dazhuang Wang, Ruotong Liu, Xiaohui Liu, Guangwen Hu, Zhineng Fu, Miao Dong, Liju Liu, Xinrui Lin, Ping Zhang, Junhua Chen, Jianxin Yang, Xinghua Xue.  (2023)  The Synthesis and Synergistic Effect of Heterocyclic Groups Grafted on Acrylic Polymers by Ester Groups for Marine Antifouling.  Coatings,  13  (9): (1643).  [PMID:] [10.3390/coatings13091643]
3. Zhou Kunfeng, Han Hong, Sha Jingquan, Luan Shaozheng, Diao Yan, Dong Chunyao, Yang Jinghua.  (2021)  Synthesis of POMOFs with 8-fold helix and its composite with carboxyl functionalized SWCNTs for the voltammetric determination of dopamine.  ANALYTICAL AND BIOANALYTICAL CHEMISTRY,  413  (21): (5309-5320).  [PMID:34263347] [10.1007/s00216-021-03504-3]
4. Dongshun Deng, Xiuzhi Duan, Bao Gao, Chao Zhang, Xiaoxia Deng, Lei Gong.  (2019)  Efficient and reversible absorption of NH3 by functional azole–glycerol deep eutectic solvents.  NEW JOURNAL OF CHEMISTRY,  43  (29): (11636-11642).  [PMID:] [10.1039/C9NJ01788G]
5. Jianwei Yuan, Su Li, Zhaofei Dang, Sixia Liu, Fu Yang, Dongguang Wang, Hengcong Tao, Shuying Gao, Edison Huixiang Ang.  (2024)  Harnessing Janus structures: enhanced internal electric fields in C3N5 for improved H2 photocatalysis.  Materials Horizons,      [PMID:39625708] [10.1039/D4MH01316F]
6. Yanyan Lu, Yu Qiao, Haoming Bao, Kang Chen, Yi Wei, Qian Zhao, Guo Kang Leon, Hongwen Zhang, Xing Yi Ling, Weiping Cai.  (2025)  Machine Learning-Driven Surface Plasmon-Enhanced Dual Spectroscopies Improve Recognition and Real-Time Monitoring of Hazardous Chemicals.  ANALYTICAL CHEMISTRY,      [PMID:40214208] [10.1021/acs.analchem.5c00545]
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