2H-1-Benzopyran, 6,7-dimethoxy-2,2-dimethyl-
- Formula: C13H16O3
- Molecular weight: 220.2643
- IUPAC Standard InChI: InChI=1S/C13H16O3/c1-13(2)6-5-9-7-11(14-3)12(15-4)8-10(9)16-13/h5-8H,1-4H3
- IUPAC Standard InChIKey: PTIDGSWTMLSGAH-UHFFFAOYSA-N
- CAS Registry Number: 644-06-4
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Other names: Ageratochromene; Precocene 2; Precocene II; PRICOCENE II; 6,7-Dimethoxy-2,2-dimethyl-2H-benzo(b)pyran; 6,7-dimethoxy-2,2-dimethyl-(2H)-benzopyran (Precocene II ); 6,7-dimethoxy-2,2-dimethyl2H-1-benzopyran
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Gas Chromatography
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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director
Kovats' RI, non-polar column, custom temperature program
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | DB-5 | 1683. | Lima, Barros, et al., 2005 | 30. m/0.25 mm/0.1 μm, He; Program: 35C => 4C/min => 180C => 20C/min => 280C |
Kovats' RI, polar column, temperature ramp
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | DB-Wax | 2373. | Nébié, Yaméogo, et al., 2004 | 30. m/0.25 mm/0.25 μm, 2. K/min, 240. C @ 40. min; Tstart: 40. C |
Normal alkane RI, non-polar column, temperature ramp
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | DB-1 | 1634. | Xu, Tang, et al., 2010 | 30. m/0.25 mm/0.25 μm, Helium, 50. C @ 2. min, 4. K/min, 220. C @ 2. min |
| Capillary | HP-5 MS | 1656. | Capetanos, Saroglou, et al., 2007 | 30. m/0.32 mm/0.25 μm, Helium, 60. C @ 5. min, 4. K/min; Tend: 280. C |
| Capillary | DB-5 | 1659. | Lopez Arze, Collin, et al., 2004 | 30. m/0.25 mm/0.25 μm, 40. C @ 2. min, 2. K/min, 210. C @ 33. min |
Normal alkane RI, non-polar column, custom temperature program
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | DB-1 | 1659. | Xu, Tang, et al., 2010 | 30. m/0.25 mm/0.25 μm, Helium; Program: not specified |
Normal alkane RI, polar column, temperature ramp
| Column type | Active phase | I | Reference | Comment |
|---|---|---|---|---|
| Capillary | Supelcowax-10 | 2412. | Lopez Arze, Collin, et al., 2004 | 30. m/0.25 mm/0.25 μm, 40. C @ 2. min, 2. K/min, 210. C @ 33. min |
| Capillary | Carbowax 20M | 2396. | Kasali, Winterhalter, et al., 2002 | 30. m/0.25 mm/0.325 μm, He, 4. K/min, 215. C @ 20. min; Tstart: 50. C |
References
Go To: Top, Gas Chromatography, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Lima, Barros, et al., 2005
Lima, M.A.S.; Barros, M.C.P.; Pinheiro, S.M.; do Nascimento, R.F.; de Abreu Matos, F.J.; Silveira, E.R.,
Volatile compositions of two Asteraceae from the north-east of Brazil: Ageratum conyzoides and Acritopappus confertus (Eupatorieae),
Flavour Fragr. J., 2005, 20, 6, 559-561, https://doi.org/10.1002/ffj.1483
. [all data]
Nébié, Yaméogo, et al., 2004
Nébié, R.H.C.; Yaméogo, R.T.; Bélanger, A.; Sib, F.S.,
Composition chimique des huiles essentielles d'Ageratum conyzoïdes du Burkina Faso,
C.R. Chim., 2004, 7, 10-11, 1019-1022, https://doi.org/10.1016/j.crci.2003.12.027
. [all data]
Xu, Tang, et al., 2010
Xu, X.; Tang, Z.; Liang, Y.,
Comparative analysis of plant essential oils by GC-MS coupled with integrated chemometric resolution methods,
Anal. Methods, 2010, 2, 4, 359-367, https://doi.org/10.1039/b9ay00213h
. [all data]
Capetanos, Saroglou, et al., 2007
Capetanos, C.; Saroglou, V.; Marin, P.D.; Simic, A.; Skaltsa, H.D.,
Essential oil snalysis of two endemic Eringium species from Serbia,
J. Serb. Chem. Soc., 2007, 72, 10, 961-965, https://doi.org/10.2298/JSC0710961C
. [all data]
Lopez Arze, Collin, et al., 2004
Lopez Arze, J.B.; Collin, G.; Garneau, F.-X.; Jean, F.-I.; Gagnon, H.,
Essential oils from Bolivia. II. Asteraceae: Ophryosporus heptanthus (Wedd.) H. Rob. et King,
J. Essent. Oil Res., 2004, 16, 4, 374-376, https://doi.org/10.1080/10412905.2004.9698747
. [all data]
Kasali, Winterhalter, et al., 2002
Kasali, A.A.; Winterhalter, P.; Adio, A.M.; Knapp, H.; Bonnlander, B.,
Chromenes in Ageratum conyzoides L.,
Flavour Fragr. J., 2002, 17, 4, 247-250, https://doi.org/10.1002/ffj.1099
. [all data]
Notes
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- Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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