CAS Number: 611-20-1
Chemical Name: 2-Cyanophenol
IUPAC Name: 2-Hydroxybenzonitrile
Synonyms:
o-Cyanophenol; 2-Hydroxyphenyl cyanide; o-Hydroxybenzonitrile
Molecular Formula: C₇H₅NO
Molecular Weight: ~119.12 g/mol
Appearance: White to light yellow crystalline solid
Physical State: Solid
Melting Point: Typically reported in the range of 43–46 °C
Boiling Point: ~260–265 °C (may decompose at elevated temperatures)
Solubility:
Slightly soluble in water; soluble in organic solvents such as ethanol, methanol, acetone, and ether
Stability:
Stable under standard laboratory conditions; sensitive to strong oxidizing agents
Functional Groups:
Phenolic hydroxyl group (–OH)
Nitrile group (–C≡N)
Aromatic benzene ring
Chemical Class:
Aromatic nitrile / phenolic compound
SMILES:
N#CC1=CC=CC=C1O
InChI Key:
GQVRZJZJQYQHAB-UHFFFAOYSA-N
Pharmaceutical Intermediate:
Used as a key intermediate in the synthesis of pharmaceutical compounds and biologically active molecules, particularly those containing phenolic or nitrile functionalities.
Fine & Specialty Chemical Synthesis:
Plays an important role in the preparation of dyes, pigments, and specialty organic compounds through substitution and coupling reactions.
Research & Development:
Commonly employed in organic synthesis, medicinal chemistry, and structure–activity relationship (SAR) studies due to its reactive hydroxyl and nitrile groups.
The presence of both phenolic and nitrile functionalities provides enhanced versatility for chemical transformations.
GHS Classification (typical):
Harmful if swallowed
Causes skin and eye irritation
Common Hazard Statements:
H302: Harmful if swallowed
H315: Causes skin irritation
H319: Causes serious eye irritation
Precautionary Statements:
P261: Avoid breathing dust or vapors
P280: Wear protective gloves and eye protection
P305 + P351 + P338: IF IN EYES, rinse cautiously with water and remove contact lenses
Typical Purity: 97–99% (research and industrial grade)
Storage Conditions:
Store in a tightly sealed container
Keep in a cool, dry, and well-ventilated area
Protect from moisture and direct sunlight
Commercial Use:
Available from specialty chemical suppliers for research and industrial synthesis only
Not intended for pharmaceutical, diagnostic, or food use
611-20-1 (2-Cyanophenol) is an important aromatic nitrile and phenolic compound widely used as an intermediate in pharmaceutical, fine chemical, and specialty chemical synthesis. Its dual functional groups enable diverse organic transformations, making it valuable for research and industrial applications. Proper handling and storage are recommended due to its irritant properties.
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