Pyrazole-3-carboxylic Acid - ≥98%(HPLC) , CAS No.1621-91-6

CAS: 1621-91-6 Cat. No.: P160445 Molecular Weight: 112.09 Beilstein Registry Number: 25(2)102 EC Number: 623-701-9
AVAILABLE TO ORDER
GRADE & PURITY ≥98%(HPLC)
Synonyms
1H-Pyrazole-5-carboxylic acid | 1H-Pyrazole-5-carboxylic acid # | 2H-PYRAZOLE-3-CARBOXYLICACID | 3-pyrazole carboxylic acid | PD179580 | AB01273973-01 | AB06191 | BB 0265903 | pyrazole-5-carboxylic | AC-1719 | Pyrazolic acid | SY002921 | 1H-Pyrazole-5-car
Storage
Room temperature
Shipped In
Normal
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Size
Status
Price
Qty
1g
P160445-1g
3
$9.90
5g
P160445-5g
5
$10.90
10g
P160445-10g
8-12 wks(?) Production requires sourcing of materials. We appreciate your patience and understanding.
$11.90
25g
P160445-25g
10

$12.90

$19.90
Save $7.00 (35.18%)
100g
P160445-100g
5

$39.90

$59.90
Save $20.00 (33.39%)
500g
P160445-500g
1

$198.90

$298.90
Save $100.00 (33.46%)
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Why this grade

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

🌡

Storage & shipping

Room temperature 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 0 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Specifications

Synonyms
1H-Pyrazole-5-carboxylic acid | 1H-Pyrazole-5-carboxylic acid # | 2H-PYRAZOLE-3-CARBOXYLICACID | 3-pyrazole carboxylic acid | PD179580 | AB01273973-01 | AB06191 | BB 0265903 | pyrazole-5-carboxylic | AC-1719 | Pyrazolic acid | SY002921 | 1H-Pyrazole-5-car
Specifications & Purity
≥98%(HPLC)
Storage
Room temperature
Shipped In
Normal
Purity
≥98%(HPLC)
Names and Identifiers
Pubchem Sid488190383
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/488190383
Canonical SmilesC1=C(NN=C1)C(=O)O
IUPAC Name1H-pyrazole-5-carboxylic acid
InChIKeyKOPFEFZSAMLEHK-UHFFFAOYSA-N
INCHI1S/C4H4N2O2/c7-4(8)3-1-2-5-6-3/h1-2H,(H,5,6)(H,7,8)
Isomeric SMILES C1=C(NN=C1)C(=O)O
Molecular Weight 112.09
Beilstein 25(2)102
Reaxy-Rn 606625
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=606625&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
SuperclassOrganoheterocyclic compounds
ClassAzoles
SubclassPyrazoles
Intermediate Tree Nodes Not available
Direct ParentPyrazole carboxylic acids and derivatives
Alternative Parents Heteroaromatic compounds  Monocarboxylic acids and derivatives  Carboxylic acids  Azacyclic compounds  Organopnictogen compounds  Organooxygen compounds  Organonitrogen compounds  Organic oxides  Hydrocarbon derivatives  
Molecular FrameworkAromatic heteromonocyclic compounds
Substituents Pyrazole-3-carboxylic acid or derivatives - Pyrazole-5-carboxylic acid or derivatives - Heteroaromatic compound - 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 - Aromatic heteromonocyclic compound
DescriptionThis compound belongs to the class of organic compounds known as pyrazole carboxylic acids and derivatives. These are heterocyclic compounds containing a pyrazole ring in which a hydrogen atom is replaced by a carboxylic acid group.
External Descriptors Not available
3D Structure
Interactive Chemical Structure Model





Associated Targets(Human)
HCAR3 Tchem HM74 nicotinic acid GPCR (353 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
POLI Tchem DNA polymerase iota (116820 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
DAO Tchem D-amino-acid oxidase (802 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
KDM4A Tchem Lysine-specific demethylase 4A (52245 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
KDM4C Tchem Lysine-specific demethylase 4C (1129 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Associated Targets(non-human)
Hcar2 Hydroxycarboxylic acid receptor 2 (55 Activities)
Activity TypeRelationActivity valueUnitsAction TypeJournalPubMed IddoiAssay Aladdin ID
Rattus norvegicus (775804 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.

17 results found

Lot NumberCertificate TypeDateItem
C2202370Certificate of AnalysisDec 12, 2025 P160445
C2202369Certificate of AnalysisDec 12, 2025 P160445
C2202566Certificate of AnalysisDec 12, 2025 P160445
H1724023Certificate of AnalysisMar 04, 2025 P160445
E2110122Certificate of AnalysisFeb 07, 2025 P160445
J2421802Certificate of AnalysisJun 14, 2024 P160445
J2421801Certificate of AnalysisJun 14, 2024 P160445
E2317595Certificate of AnalysisJan 05, 2023 P160445
E2317596Certificate of AnalysisJan 05, 2023 P160445
E2317597Certificate of AnalysisJan 05, 2023 P160445
E2317601Certificate of AnalysisJan 05, 2023 P160445
E2317602Certificate of AnalysisJan 05, 2023 P160445
E2317625Certificate of AnalysisJan 05, 2023 P160445
E2317592Certificate of AnalysisJan 05, 2023 P160445
I2501048Certificate of AnalysisJan 05, 2023 P160445
E2317581Certificate of AnalysisJan 05, 2023 P160445
C2202563Certificate of AnalysisFeb 11, 2022 P160445

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Chemical and Physical Properties
SolubilitySoluble in Methanol
Melt Point(°C)213°C(dec.)(lit.)
Molecular Weight112.090 g/mol
XLogP30.100
Hydrogen Bond Donor Count2
Hydrogen Bond Acceptor Count3
Rotatable Bond Count1
Exact Mass112.027 Da
Monoisotopic Mass112.027 Da
Topological Polar Surface Area66.000 Ų
Heavy Atom Count8
Formal Charge0
Complexity104.000
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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