Dimethoxyphenols

In chemistry, the dimethoxyphenols form a group of aromatic compounds that are derived from both phenol and dimethoxybenzenes . The structure consists of a benzene ring with an attached hydroxyl group  (-OH) and two methoxy groups  (-OCH ₃ ) as substituents . Their different arrangement results in six constitutional isomers with the empirical formula C ₈ H ₁₀ O ₃ , 2,6-dimethoxyphenol ( syringol ) being the best known.

Dimethoxyphenols
Surname	2,3-dimethoxyphenol	2,4-dimethoxyphenol	2,5-dimethoxyphenol	2,6-dimethoxyphenol	3,4-dimethoxyphenol	3,5-dimethoxyphenol
other names				Syringol		Taxicatigenin
Structural formula
CAS number	5150-42-5	13330-65-9	18113-18-3	91-10-1	2033-89-8	500-99-2
PubChem	78828	593006	5314498	7041	16251	10383
Molecular formula	C 8 H 10 O 3
Molar mass	154.16 g mol −1
Physical state	firmly
Melting point				56.5 ° C	79-82 ° C	37 ° C
boiling point	233-234 ° C			261 ° C		199 ° C (35 mmHg)
GHS labeling	Caution	no classification available	no classification available	Caution	Caution	Caution
H and P phrases	315-319-335	see above	see above	302-315-319-335	315-319-335	315-319-335
	no EUH phrases	see above	see above	no EUH phrases	no EUH phrases	no EUH phrases
	261-305 + 351 + 338	see above	see above	261-305 + 351 + 338	261-305 + 351 + 338	261-305 + 351 + 338

See also

• Methoxyphenols

Individual evidence

1. ↑ ^{a b c d} David R. Lide (Ed.): CRC Handbook of Chemistry and Physics . 90th edition. (Internet version: 2010), CRC Press / Taylor and Francis, Boca Raton, FL, Physical Constants of Organic Compounds, pp. 3-190.
2. ↑ ^{a b} Data sheet 3,4-Dimethoxyphenol from Sigma-Aldrich , accessed on July 19, 2012 ( PDF ).
3. ↑ ^{a b} Datasheet 2,3-Dimethoxyphenol from Sigma-Aldrich , accessed on July 19, 2012 ( PDF ).
4. ↑ Data sheet 2,5-dimethoxyphenol from Sigma-Aldrich , accessed on July 19, 2012 ( PDF ).
5. ↑ Data sheet 2,6-dimethoxyphenol from Sigma-Aldrich , accessed on July 18, 2012 ( PDF ).
6. ↑ Data sheet 3,5-dimethoxyphenol from Sigma-Aldrich , accessed on July 19, 2012 ( PDF ).

Web links

Commons : Dimethoxyphenols  - Collection of Images, Videos and Audio Files