4-Chloro-2-methoxyphenol TCI C1517

Chemical Identity

Other names: 4-Chloroguaiacol
CAS No.: 16766-30-6
PubChem: CID 28050·SID 87566514
Formula: C7H7ClO2
Molecular weight: 158.58 g/mol
Purity: >95.0%(GC)
Reference databases: ECHA

Full identifiers (IUPAC, SMILES, InChIKey)

IUPAC: 4-chloro-2-methoxyphenol
SMILES: COC1=C(C=CC(=C1)Cl)O
InChIKey: FVZQMMMRFNURSH-UHFFFAOYSA-N
MDL: MDL00070774

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CoA (Certificate of Analysis)

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4-Chloro-2-methoxyphenol from TCI (product code C1517), also known as 4-chloroguaiacol, is a chlorinated phenol derivative. It carries a methoxy group at the ortho position and a chlorine atom at the para position relative to the hydroxyl group. In the laboratory, it serves two purposes: a non-heterocyclic building block for organic synthesis, and a reference compound in environmental analysis. Its guaiacol framework is closely related to the structural units of lignin, so the compound appears often in wood and pulp chemistry studies.

Chemists choose this compound because it combines three useful features: the reactivity of a phenol, the electron-donating effect of the methoxy group, and a chlorine atom that can serve as a point for further modification. The hydroxyl group can be etherified or esterified, the aromatic ring can undergo further substitution, and the chlorine atom can take part in coupling reactions. In environmental analysis, chlorinated guaiacols are known as one group of compounds that can form during chlorine-based pulp bleaching, so a pure standard is needed for reliable identification. Technical data for this product are based on the TCI certificate of analysis.

Indonesia has a large pulp and paper industry. Environmental testing laboratories, university research groups, and industrial quality control units in the country therefore have practical reasons to work with chlorinated guaiacol compounds. Typical users include analysts studying effluent and water samples, academic researchers in wood chemistry and lignin chemistry, and synthetic chemists who need a functionalized aromatic intermediate. AMI Scientific supplies this TCI reagent to these laboratories for both routine and research work.

Related TCI products

Organic synthesis building block: the phenolic hydroxyl group, methoxy substituent, and chlorine atom give chemists several reactive sites for building more complex aromatic molecules step by step.
Environmental reference standard: as a chlorinated guaiacol, it is used to identify compounds that can form during chlorine-based pulp bleaching when analysts examine water and effluent samples.
Wood and pulp chemistry research: its guaiacol framework is closely related to lignin structural units, so it is a relevant model compound for studies of lignin chemistry and pulp processing.
Etherification and esterification studies: the free hydroxyl group can be converted into ethers or esters, so the compound is a convenient substrate for preparing protected or modified phenolic derivatives.
Coupling reaction development: the chlorine atom on the aromatic ring can serve as a handle for coupling reactions, which lets researchers attach new groups to the substituted phenol core.

Brand	TCI (product code C1517)
CAS number	16766-30-6
Molecular formula	—
Purity	—
Category	Chemistry > Building Blocks > Non-Heterocyclic Building Blocks
Pack sizes	as listed on the product page
Physical form	refer to the TCI certificate of analysis
Storage	follow the conditions stated on the TCI label and certificate of analysis

Store 4-Chloro-2-methoxyphenol in its original, tightly closed container in a cool, dry, well-ventilated place, away from direct sunlight, heat sources, and incompatible materials such as strong oxidizing agents. Always follow the specific storage conditions printed on the TCI label and certificate of analysis. As with other chlorinated phenols, handle the compound in a fume hood and wear suitable protective gloves, safety glasses, and a laboratory coat. Avoid contact with skin and eyes, and avoid inhaling dust or vapour. Read the Safety Data Sheet before use, and dispose of waste according to local regulations for halogenated organic chemicals.

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