1H-Tetrazole-5-acetic acid - ≥98%(T) , CAS No.21743-75-9

CAS: 21743-75-9 Cat. No.: H138498 Molecular Weight: 128.09 EC Number: 244-563-2
AVAILABLE TO ORDER
GRADE & PURITY ≥98%(T)
Synonyms
(2H-tetrazol-5-yl)-acetic acid | NSC 282047 | NSC282047 | NSC-282047 | T72085 | AKOS001216672 | EINECS 244-563-2 | BB 0237407 | J-505374 | BBL010266 | SCHEMBL241024 | ChemDiv2_000218 | EN300-24031 | 1H-tetrazole-5acetic acid | 1H-Tetrazole-5-acetic acid |
Storage
Argon charged,Room temperature
Shipped In
Normal
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
1g
H138498-1g
7
$25.90
5g
H138498-5g
2
$68.90
25g
H138498-25g
1
$243.90
100g
H138498-100g
1
$953.90
Enter a quantity for the sizes you want to add.
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Why this grade

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

🌡

Storage & shipping

Argon charged,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.

📚

Literature proof

Cited in 0 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Overview

1H-Tetrazole-5-acetic acid H2tza) can be prepared from ethyl 2-(1H-tetrazol-5-yl)acetate.

Specifications

Synonyms
(2H-tetrazol-5-yl)-acetic acid | NSC 282047 | NSC282047 | NSC-282047 | T72085 | AKOS001216672 | EINECS 244-563-2 | BB 0237407 | J-505374 | BBL010266 | SCHEMBL241024 | ChemDiv2_000218 | EN300-24031 | 1H-tetrazole-5acetic acid | 1H-Tetrazole-5-acetic acid |
Specifications & Purity
≥98%(T)
Storage
Argon charged, Room temperature
Shipped In
Normal
Purity
≥98%(T)
Names and Identifiers
Pubchem Sid504755974
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/504755974
Canonical SmilesC(C1=NNN=N1)C(=O)O
IUPAC Name2-(2H-tetrazol-5-yl)acetic acid
InChIKeyJUNAPQMUUHSYOV-UHFFFAOYSA-N
INCHI1S/C3H4N4O2/c8-3(9)1-2-4-6-7-5-2/h1H2,(H,8,9)(H,4,5,6,7)
Isomeric SMILES C(C1=NNN=N1)C(=O)O
WGK Germany 3
Molecular Weight 128.09
Reaxy-Rn 1102788
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=1102788&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.

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🔬 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 ParentTetrazoles
Alternative Parents Heteroaromatic compounds  Monocarboxylic acids and derivatives  Carboxylic acids  Azacyclic compounds  Organopnictogen compounds  Organonitrogen compounds  Organic oxides  Hydrocarbon derivatives  Carbonyl compounds  
Molecular FrameworkAromatic heteromonocyclic compounds
Substituents Heteroaromatic compound - Tetrazole - Azacycle - Monocarboxylic acid or derivatives - Carboxylic acid - Carboxylic acid derivative - Organic nitrogen compound - Organic oxygen compound - Organopnictogen compound - Organic oxide - Hydrocarbon derivative - Organooxygen compound - Organonitrogen compound - Carbonyl group - Aromatic heteromonocyclic compound
DescriptionThis compound belongs to the class of organic compounds known as tetrazoles. These are organic compounds containing a tetrazole ring, which is a five-member aromatic heterocycle made up of four nitrogen atoms and a one carbon atom.
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.

11 results found

Lot NumberCertificate TypeDateItem
K2205196Certificate of AnalysisMay 11, 2026 H138498
K2205200Certificate of AnalysisMay 11, 2026 H138498
K2205201Certificate of AnalysisMay 11, 2026 H138498
K2205204Certificate of AnalysisMay 11, 2026 H138498
F1819008Certificate of AnalysisAug 15, 2025 H138498
L2409224Certificate of AnalysisAug 22, 2024 H138498
E2618321Certificate of AnalysisJun 18, 2024 H138498
E2618322Certificate of AnalysisJun 18, 2024 H138498
L2111226Certificate of AnalysisSep 21, 2023 H138498
H2131305Certificate of AnalysisJun 12, 2023 H138498
H2131295Certificate of AnalysisJun 12, 2023 H138498

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Chemical and Physical Properties
SolubilitySoluble in methanol (50 mg/ml)
SensitivityAir sensitive
Melt Point(°C)177°C
Molecular Weight128.090 g/mol
XLogP3-1.000
Hydrogen Bond Donor Count2
Hydrogen Bond Acceptor Count5
Rotatable Bond Count2
Exact Mass128.033 Da
Monoisotopic Mass128.033 Da
Topological Polar Surface Area91.800 Ų
Heavy Atom Count9
Formal Charge0
Complexity116.000
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
Documents & Articles
Solution Calculators
Reviews

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