1-Methyl-1H-pyrazole-5-carboxaldehyde - ≥95%(GC) , CAS No.27258-33-9

CAS: 27258-33-9 Cat. No.: M138592 Molecular Weight: 110.11 EC Number: 640-302-5
AVAILABLE TO ORDER
GRADE & PURITY ≥95%(GC)
Synonyms
STK312937 | 1-methyl-1H-pyrazol-5-carbaldehyde | HY-W127571 | MFCD03419801 | J-504898 | 1-Methyl-1H-pyrazole-5-carboxaldehyde, 96% | EN300-31477 | RAJRANFZSWDUJZ-UHFFFAOYSA-N | 2-bromoethanal dimethyl acetal | 1-methyl-1H-pyrazole-5-carbaldehyde | FT-0660
Storage
Room temperature
Shipped In
Normal
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Size
Status
Price
Qty
250mg
M138592-250mg
3

$9.90

$14.90
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1g
M138592-1g
2

$12.90

$19.90
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5g
M138592-5g
1

$18.90

$28.90
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10g
M138592-10g
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$33.90

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25g
M138592-25g
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$70.90

$106.90
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100g
M138592-100g
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$282.90

$424.90
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Why this grade

≥95%(GC) 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 0 peer-reviewed publications across chromatography, organic synthesis, and cross-coupling reactions.

Specifications

Synonyms
STK312937 | 1-methyl-1H-pyrazol-5-carbaldehyde | HY-W127571 | MFCD03419801 | J-504898 | 1-Methyl-1H-pyrazole-5-carboxaldehyde, 96% | EN300-31477 | RAJRANFZSWDUJZ-UHFFFAOYSA-N | 2-bromoethanal dimethyl acetal | 1-methyl-1H-pyrazole-5-carbaldehyde | FT-0660
Specifications & Purity
≥95%(GC)
Storage
Room temperature
Shipped In
Normal
Purity
≥95%(GC)
Names and Identifiers
Pubchem Sid504764610
Pubchem Sid Urlhttps://pubchem.ncbi.nlm.nih.gov/substance/504764610
Canonical SmilesCN1C(=CC=N1)C=O
IUPAC Name2-methylpyrazole-3-carbaldehyde
InChIKeyRAJRANFZSWDUJZ-UHFFFAOYSA-N
INCHI1S/C5H6N2O/c1-7-5(4-8)2-3-6-7/h2-4H,1H3
Isomeric SMILES CN1C(=CC=N1)C=O
WGK Germany 3
Molecular Weight 110.11
Reaxy-Rn 636355
Reaxys-RN_link_address https://www.reaxys.com/reaxys/secured/hopinto.do?context=S&query=IDE.XRN=636355&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.

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Advanced Data

Taxonomic Classification

Taxonomy Tree

KingdomOrganic compounds
SuperclassOrganic oxygen compounds
ClassOrganooxygen compounds
SubclassCarbonyl compounds
Intermediate Tree Nodes Aldehydes
Direct ParentAryl-aldehydes
Alternative Parents Pyrazoles  Heteroaromatic compounds  Azacyclic compounds  Organonitrogen compounds  Organic oxides  Hydrocarbon derivatives  
Molecular FrameworkAromatic heteromonocyclic compounds
Substituents Aryl-aldehyde - Heteroaromatic compound - Pyrazole - Azole - Azacycle - Organoheterocyclic compound - Organic nitrogen compound - Organic oxide - Hydrocarbon derivative - Organonitrogen compound - Aromatic heteromonocyclic compound
DescriptionThis compound belongs to the class of organic compounds known as aryl-aldehydes. These are compounds containing an aldehyde group directly attached to an aromatic ring.
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.

2 results found

Lot NumberCertificate TypeDateItem
H1808096Certificate of AnalysisOct 21, 2025 M138592
H1808095Certificate of AnalysisOct 14, 2025 M138592
Chemical and Physical Properties
SensitivityAir Sensitive
Refractive Index1.52
Flash Point(°F)150.8 °F
Flash Point(°C)66 °C
Boil Point(°C)53 °C/4 mmHg
Molecular Weight110.110 g/mol
XLogP30.000
Hydrogen Bond Donor Count0
Hydrogen Bond Acceptor Count2
Rotatable Bond Count1
Exact Mass110.048 Da
Monoisotopic Mass110.048 Da
Topological Polar Surface Area34.900 Ų
Heavy Atom Count8
Formal Charge0
Complexity94.400
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
Solution Calculators
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