Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 16640552Generated: October 25, 2026

(4-(1H-Pyrazol-1-yl)phenyl)boronic acid

AKOS P-2123527 · VITAS-BB TBB011770 · ART-CHEM-BB B037013 · CHEMBRDG-BB 4011481 · 4-(Pyrazol-1-yl)phenyl]boronic · 4-PYRAZOL-1-YL-PHENYLBORONIC ACID · [4-(1-pyrazolyl)phenyl]boronic acid · [4-(1H-PYRAZOL-1-YL)PHENYL]BORONIC ACID

https://huagongshe.com/en/chemical/16640552

(4-(1H-Pyrazol-1-yl)phenyl)boronic acid molecular structure

Identifiers & Physical Properties

CAS No.891270-35-2
Molecular formulaC9H9BN2O2
Average molar mass187.99 g/mol
Monoisotopic mass188.07570793 g/mol
SMILESOB(O)c1ccc(-n2cccn2)cc1
InChIKeyXTVMZKCCFLOJBL-UHFFFAOYSA-N
PubChem CID16640552
EC No.800-918-9
DTXSIDDTXSID90586303

Chemical & Physical Properties

Topological polar surface area58.3
Hydrogen bond donors2
Hydrogen bond acceptors3
Rotatable bonds2
Heavy atoms14
Formal charge0
Complexity184
Boiling point374.1±44.0 °C(Predicted)
Density1.20±0.1 g/cm3(Predicted)
Storage conditionsunder inert gas (nitrogen or Argon) at 2-8°C
pKa (acidity coefficient)8.39±0.17(Predicted)
AppearanceLight brown to brown Solid
GHS pictogramGHS07
Signal wordWarning
GHS hazard statementsH319-H335-H315
GHS precautionary statementsP264-P280-P302+P352-P321-P332+P313-P362-P264-P280-P305+P351+P338-P337+P313P
Hazard symbolsXi
Risk statements (R)37/38-41
Safety statements (S)26-39
Hazard classIRRITANT
Customs code2933199090

Safety & Regulations

GHS classificationDangerH315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P305+P354+P338, P317, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 3 reports by companies from 3 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Hazard Classes and CategoriesSkin Irrit. 2 (100%)
Customs code2933199090
Risk statements (R)37/38-41
Signal wordWarning
GHS pictogramGHS07
Hazard symbolsXi
Safety statements (S)26-39
Hazard classIRRITANT
GHS hazard statementsH319-H335-H315
GHS precautionary statementsP264-P280-P302+P352-P321-P332+P313-P362-P264-P280-P305+P351+P338-P337+P313P

Applications & Uses

Uses

4-Pyrazol-1-yl-phenylboronic Acid is a reactant in the preparation of diaminothienopyrimidine anti-malarial agents which are orally active.