Iodonitrotetrazolium chloride(INT) - ≥98% , CAS No.146-68-9

CAS: 146-68-9 Cat. No.: I105499 Molecular Weight: 505.71 Beilstein Registry Number: 4093220 EC Number: 205-676-2 PubChem CID: 64957
AVAILABLE TO ORDER
GRADE & PURITY ≥98%
Synonyms
INT | I-7650 | 3-(P-NITROPHENYL)-2-(P-IODOPHENYL)-5-PHENYLTETRAZOLIUM CHLORIDE | 2-(p-iodophenyl)-3-(p-nitrophenyl)-5-phenyl tetrazolium chloride | Iodonitrotetrazolium | 2-(4-iodophenyl)-3-(4-nitrophenyl)-5-phenyltetrazol-3-ium;chloride | J-100184 | I078
Storage
Store at 2-8°C
Shipped In
Wet ice
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Size
Status
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250mg
I105499-250mg
5

$20.90

$31.90
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1g
I105499-1g
5

$34.90

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5g
I105499-5g
3

$136.90

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25g
I105499-25g
2

$513.90

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Why this grade

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

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Storage & shipping

Store at 2-8°C Ships Wet ice 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 10 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

Iodonitrotetrazolium chloride is an electron acceptor used in various colorimetric assays. The chemical has been mainly documented for its measurement of dehydrogenase activity. In the assay to measure SDH (succinate dehydrogenase) activity, Iodonitrotetrazolium chloride was used as an oxidizing agent being reduced by succinate dehydrogenase. Upon reduction the compound forms a formazan dye measured at 500 nm. Iodonitrotetrazolium chloride has also been used to study the electron transport activity in soils, sediments, and pure enzyme cultures as well as nucleotide diphosphate kinase activity.
An electron acceptor that forms a formazan dye on reduction; measures dehydrogenase activity.

Specifications

Synonyms
INT | I-7650 | 3-(P-NITROPHENYL)-2-(P-IODOPHENYL)-5-PHENYLTETRAZOLIUM CHLORIDE | 2-(p-iodophenyl)-3-(p-nitrophenyl)-5-phenyl tetrazolium chloride | Iodonitrotetrazolium | 2-(4-iodophenyl)-3-(4-nitrophenyl)-5-phenyltetrazol-3-ium;chloride | J-100184 | I078
Specifications & Purity
≥98%
Biochemical and Physiological Mechanisms
spectrophotometric assay for succinate dehydrogenase activity: Materials: spectrophotometer cuvette with 1-cm light patch. Reaction Mixture: 100 mmol/liter triethanolamine (HCl), pH8, 3 o.5 mmol/liter EDTA, 2 mmol/liter Iodonitrotetrazolium chloride, 12 g/
Storage
Store at 2-8°C
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 Sid504753935
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/504753935
Canonical SmilesC1=CC=C(C=C1)C2=NN([N+](=N2)C3=CC=C(C=C3)[N+](=O)[O-])C4=CC=C(C=C4)I.[Cl-]
IUPAC Name2-(4-iodophenyl)-3-(4-nitrophenyl)-5-phenyltetrazol-3-ium;chloride
InChIKeyJORABGDXCIBAFL-UHFFFAOYSA-M
INCHI1S/C19H13IN5O2.ClH/c20-15-6-8-16(9-7-15)23-21-19(14-4-2-1-3-5-14)22-24(23)17-10-12-18(13-11-17)25(26)27;/h1-13H;1H/q+1;/p-1
Isomeric SMILES C1=CC=C(C=C1)C2=NN([N+](=N2)C3=CC=C(C=C3)[N+](=O)[O-])C4=CC=C(C=C4)I.[Cl-]
WGK Germany 3
PubChem CID 64957
Molecular Weight 505.71
Beilstein 4093220
Reaxy-Rn 3846329

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
SuperclassOrganoheterocyclic compounds
ClassAzoles
SubclassTetrazoles
Intermediate Tree Nodes Not available
Direct ParentPhenyltetrazoles and derivatives
Alternative Parents Nitrobenzenes  Nitroaromatic compounds  Iodobenzenes  Aryl iodides  Heteroaromatic compounds  Propargyl-type 1,3-dipolar organic compounds  Organic oxoazanium compounds  Azacyclic compounds  Organopnictogen compounds  Organonitrogen compounds  Organoiodides  Organic oxides  Organic chloride salts  Hydrocarbon derivatives  
Molecular FrameworkAromatic heteromonocyclic compounds
Substituents Phenyltetrazole - Nitrobenzene - Nitroaromatic compound - Halobenzene - Iodobenzene - Aryl halide - Aryl iodide - Monocyclic benzene moiety - Benzenoid - Heteroaromatic compound - C-nitro compound - Organic nitro compound - Organic oxoazanium - Azacycle - Organic 1,3-dipolar compound - Allyl-type 1,3-dipolar organic compound - Propargyl-type 1,3-dipolar organic compound - Organoiodide - Organic chloride salt - Organohalogen compound - Organic salt - Hydrocarbon derivative - Organonitrogen compound - Organic nitrogen compound - Organic oxygen compound - Organopnictogen compound - Organic oxide - Aromatic heteromonocyclic compound
DescriptionThis compound belongs to the class of organic compounds known as phenyltetrazoles and derivatives. These are compounds containing a phenyltetrazole skeleton, which consists of a tetrazole bound to a phenyl group.
External Descriptors organic chloride salt
3D Structure
Interactive Chemical Structure Model





Associated Targets(non-human)
Plasmodium falciparum (966862 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
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.

22 results found

Lot NumberCertificate TypeDateItem
K2211751Certificate of AnalysisMay 09, 2026 I105499
K2211730Certificate of AnalysisMay 09, 2026 I105499
C2405061Certificate of AnalysisDec 10, 2025 I105499
B2420072Certificate of AnalysisOct 30, 2025 I105499
B2602291Certificate of AnalysisFeb 21, 2025 I105499
C2627166Certificate of AnalysisFeb 21, 2025 I105499
D2510425Certificate of AnalysisFeb 21, 2025 I105499
D2510428Certificate of AnalysisFeb 21, 2025 I105499
D2510429Certificate of AnalysisFeb 21, 2025 I105499
D2616111Certificate of AnalysisFeb 21, 2025 I105499
H2423046Certificate of AnalysisAug 22, 2024 I105499
L2305131Certificate of AnalysisDec 11, 2023 I105499
L2427167Certificate of AnalysisDec 11, 2023 I105499
K2328164Certificate of AnalysisDec 01, 2023 I105499
L2427166Certificate of AnalysisDec 01, 2023 I105499
D2126250Certificate of AnalysisFeb 08, 2023 I105499
I2311029Certificate of AnalysisSep 08, 2022 I105499
E2430034Certificate of AnalysisSep 08, 2022 I105499
K2211732Certificate of AnalysisSep 08, 2022 I105499
K2211750Certificate of AnalysisSep 08, 2022 I105499
I2016087Certificate of AnalysisJul 18, 2022 I105499
G1823041Certificate of AnalysisApr 14, 2022 I105499

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Chemical and Physical Properties
SolubilitySoluble in water (4 mg/ml), ethanol (8 mg/ml), ethylene glycol (30 mg/ml), DMSO (slightly), and methanol: water (1:1, 50 mg/ml, very faintly turbid, very deep yellow,hot).
SensitivityHygroscopic,Heat & Light sensitive.
Melt Point(°C)231°C
Molecular Weight505.700 g/mol
XLogP3
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count5
Rotatable Bond Count3
Exact Mass504.98 Da
Monoisotopic Mass504.98 Da
Topological Polar Surface Area80.400 Ų
Heavy Atom Count28
Formal Charge0
Complexity497.000
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 Count2
Documents & Articles
Citations of This Product
References
1. Xing Yan, Ming-Jun Zhu.  (2023)  Enhanced bioelectricity generation in thermophilic microbial fuel cell with lignocellulose as an electron donor by resazurin-mediated electron transfer.  BIORESOURCE TECHNOLOGY,      [PMID:37722540] [10.1016/j.biortech.2023.129764]
2. Shuai Zhang, Junfeng Su, Shuyu Liu, Yi Ren, Shumiao Cao.  (2023)  Regulating mechanism of denitrifier Comamonas sp. YSF15 in response to carbon deficiency: Based on carbon/nitrogen functions and bioaggregation.  ENVIRONMENTAL RESEARCH,      [PMID:37451570] [10.1016/j.envres.2023.116661]
3. Qiong Liu, Ju Li, Xin Zhong, Zan Dai, Zhong Lu, Hao Yang, Rong Chen.  (2018)  Enhanced antibacterial activity and mechanism studies of Ag/Bi2O3 nanocomposites.  ADVANCED POWDER TECHNOLOGY,      [PMID:] [10.1016/j.apt.2018.05.015]
4. Rensen Ran, Huan Zeng, Dong Zhao, Ruiyuan Liu, Xia Xu.  (2017)  The Novel Property of Heptapeptide of Microcin C7 in Affecting the Cell Growth of Escherichia coli.  MOLECULES,  22  (3): (432).  [PMID:28282893] [10.3390/molecules22030432]
5. You Yanling, Yu Xu, Jiang Junjie, Chen Zhixin, Zhu Ya-Xuan, Chen Yihan, Lin Han, Shi Jianlin.  (2025)  Bacterial cell wall-specific nanomedicine for the elimination of Staphylococcus aureus and Pseudomonas aeruginosa through electron-mechanical intervention.  Nature Communications,  16  (1): (1-15).  [PMID:40121200] [10.1038/s41467-025-58061-5]
6. Ruyi Xu, Meixue Zhang, Shulan Ruan, Bin Li, Jing Tian.  (2025)  The synergistic antibacterial effect and mechanism of ε-polylysine and punicalagin in microorganism inhibition.  Food Bioscience,      [PMID:] [10.1016/j.fbio.2025.107451]
7. Qiuying Li, Chenyang Jia, Jiaxing Sun, Tong Sun, Jianrong Li, Xuepeng Li.  (2025)  Synergistic antibacterial effects and mechanisms of different phenolic acids against Shewanella putrefaciens from fish, with emphasis on the combination of gallic acid and caffeic acid.  FOOD MICROBIOLOGY,      [PMID:41136157] [10.1016/j.fm.2025.104940]
8. Lin Fei, Jin Weiwei, Yang Longbing, Tian Chunren, Zhang Jin, Jiao Zhenglong, Peng Jian, Guo Guo.  (2025)  Novel antibacterial peptide HfAMP against methicillin-resistant Staphylococcus aureus.  BMC MICROBIOLOGY,  25  (1): (1-12).  [PMID:41184786] [10.1186/s12866-025-04343-3]
9. Chaoyu Fan, Hongji Wu, Meilin Guo, Yimin Pan, Zhenliu Qin, Zonghao Dai, Hongru Kong, Feifei Huang, Youhui Lin, Jie Zhang.  (2025)  A quercetin-modified bifunctional system for efficient acute pancreatitis treatment via inhibiting oxidative stress and modulating inflammation.  JOURNAL OF COLLOID AND INTERFACE SCIENCE,      [PMID:41447997] [10.1016/j.jcis.2025.139716]
10. Haoran Li, Yongsheng Ni, Yumeng Li, Baocai Xu.  (2026)  Curcumin/octyl gallate/chitosan photodynamic coating with enhanced adhesion and antibacterial efficacy for preservation of prepared mutton.  Innovative Food Science & Emerging Technologies,      [PMID:] [10.1016/j.ifset.2026.104530]
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