IUPAC Name: (2-Formyl-5-methoxyphenyl)boronic acid
Synonyms of 5-Methoxy-2-formylphenylboronic acid (CAS NO.40138-18-9): 2-Formyl-5-methoxyphenylboronic acid
CAS NO: 40138-18-9
Molecular Formula: C₈H₉BO₄
Molecular Weight: 179.97
Molecular Structure:
H bond acceptors: 4
H bond donors: 2
Freely Rotating Bonds: 5
Polar Surface Area: 44.76 Å²
Index of Refraction: 1.537
Molar Refractivity: 44.62 cm³
Molar Volume: 142.8 cm³
Surface Tension: 48.7 dyne/cm
Density: 1.25 g/cm³
Flash Point: 206.6 °C
Enthalpy of Vaporization: 70.79 kJ/mol
Boiling Point: 418 °C at 760 mmHg
Vapour Pressure: 9.83E-08 mmHg at 25°C
Melting Point: 155-160 °C
Storage temp: 0-6°C
Appearance: Yellowish-beige powder
SMILES: O=Cc1ccc(OC)cc1B(O)O
InChI: InChI=1/C8H9BO4/c1-13-7-3-2-6(5-10)8(4-7)9(11)12/h2-5,11-12H,1H3
InChIKey: YISYHZMNRATPRA-UHFFFAOYAC
Std. InChI: InChI=1S/C8H9BO4/c1-13-7-3-2-6(5-10)8(4-7)9(11)12/h2-5,11-12H,1H3
Std. InChIKey: YISYHZMNRATPRA-UHFFFAOYSA-N
Product Categories of 5-Methoxy-2-formylphenylboronic acid (CAS NO.40138-18-9): Substituted Boronic Acids;Boronic acids;Heterocyclic Compounds;Aldehyde;Aryl;Organoborons

Hazard Codes: Xi
Risk Statements: 36/37/38
R36/37/38: Irritating to eyes, respiratory system and skin.
Safety Statements: 37/39-26
S37/39: Wear suitable gloves and eye/face protection. 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
HazardClass: IRRITANT, KEEP COLD

General Information: As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear.
Extinguishing Media: Use water spray, dry chemical, carbon dioxide, or chemical foam. 
Handling: Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes.
Storage: Store 5-Methoxy-2-formylphenylboronic acid (CAS NO.40138-18-9) in a tightly closed container. Store in a dry area. Keep refrigerated. (Store below 4°C/39°F.)