(1,5-Dimethyl-1H-pyrazol-4-yl)boronic acid(contains varying amounts of Anhydride) - ≥95% , CAS No.1204333-57-2

CAS: 1204333-57-2 Cat. No.: B733239 Molecular Weight: 139.95 EC Number: 802-052-7 PubChem CID: 53216597
AVAILABLE TO ORDER
GRADE & PURITY ≥95%
Storage
Store at -20°C,Argon charged,Desiccated
Shipped In
Ice chest + Ice pads
 ·  off list, applied to all prices below.
Size
Status
Price
Qty
250mg
B733239-250mg
8-12 wks(?) Production requires sourcing of materials. We appreciate your patience and understanding.
$21.90
1g
B733239-1g
8-12 wks(?) Production requires sourcing of materials. We appreciate your patience and understanding.
$75.90
5g
B733239-5g
8-12 wks(?) Production requires sourcing of materials. We appreciate your patience and understanding.
$327.90
Enter a quantity for the sizes you want to add.
🧪

Why this grade

≥95% for sensitive chromatographic and analytical workflows requiring minimal baseline interference.

🌡

Storage & shipping

Store at -20°C,Argon charged,Desiccated Ships Ice chest + Ice pads 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

Specifications & Purity
≥95%
Storage
Store at -20°C, Argon charged, Desiccated
Shipped In
Ice chest + Ice pads
This product requires cold chain shipping. Ground and other economy services are not available.
Purity
≥95%
Names and Identifiers
Canonical SmilesB(C1=C(N(N=C1)C)C)(O)O
IUPAC Name(1,5-dimethylpyrazol-4-yl)boronic acid
InChIKeyNAYVNBPKYJFKQA-UHFFFAOYSA-N
INCHI1S/C5H9BN2O2/c1-4-5(6(9)10)3-7-8(4)2/h3,9-10H,1-2H3
Isomeric SMILES B(C1=C(N(N=C1)C)C)(O)O
PubChem CID 53216597
Molecular Weight 139.95

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 ParentPyrazoles
Alternative Parents Heteroaromatic compounds  Boronic acids  Organic metalloid salts  Azacyclic compounds  Organopnictogen compounds  Organonitrogen compounds  Organometalloid compounds  Organic oxygen compounds  Hydrocarbon derivatives  
Molecular FrameworkAromatic heteromonocyclic compounds
Substituents Heteroaromatic compound - Pyrazole - Boronic acid - Boronic acid derivative - Azacycle - Organic metalloid salt - Organic nitrogen compound - Organic oxygen compound - Organopnictogen compound - Hydrocarbon derivative - Organonitrogen compound - Organic metalloid moeity - Aromatic heteromonocyclic compound
DescriptionThis compound belongs to the class of organic compounds known as pyrazoles. These are compounds containing a pyrazole ring, which is a five-member aromatic ring with two nitrogen atoms (at positions 1 and 2) and three carbon atoms.
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.

3 results found

Lot NumberCertificate TypeDateItem
L2523353Certificate of AnalysisOct 28, 2025 B733239
L2523356Certificate of AnalysisOct 28, 2025 B733239
L2523357Certificate of AnalysisOct 28, 2025 B733239
Chemical and Physical Properties
Molecular Weight139.950 g/mol
XLogP3
Hydrogen Bond Donor Count2
Hydrogen Bond Acceptor Count3
Rotatable Bond Count1
Exact Mass140.076 Da
Monoisotopic Mass140.076 Da
Topological Polar Surface Area58.300 Ų
Heavy Atom Count10
Formal Charge0
Complexity122.000
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
Solution Calculators
Reviews

Customer Reviews

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