|Jmol-3D images||Image 1|
|Molar mass||152.15 g/mol|
|Appearance||Yellow, fibrous solid|
|Melting point||40–42 °C (313–315 K)|
|Boiling point||265–266 °C (458–459 K)|
|R-phrases||R20 R21 R22 R36 R37 R38|
|S-phrases||S26 S36 S37 S39|
|Main hazards||May cause irritation to skin,
eyes, and respiratory tract
|Flash point||>110 °C|
| (what is: / ?)
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
ortho-Vanillin (2-Hydroxy-3-methoxybenzaldehyde) is an organic solid present in the extracts and essential oils of many plants. Its functional groups include aldehyde, ether and phenol. ortho-Vanillin, a compound of the formula C8H8O3, is distinctly different from its more prevalent isomer, vanillin. The "ortho-" prefix refers the to position of the compound’s hydroxyl moiety, which is found in the para-position in vanillin.
ortho-Vanillin is a fibrous, light-yellow, crystalline solid. Unlike its better-known analogue, o-vanillin does not have the characteristic and intense odor of vanilla. Present in a variety of food products, it is not specifically sought after, and is therefore a less-commonly produced and encountered food additive.
ortho-Vanillin was first isolated, in 1876, by renowned German chemist Ferdinand Tiemann. By 1910, methods for its purification had been developed by Francis Noelting, who similarly demonstrated its versatility as a general synthetic precursor for a diverse array of compounds, such as the coumarins.
- Abou Zeid, A. H.; Sleem, A. A. (2002). "Natural and stress constituents from Spinacia oleracea L. leaves and their biological activities". Bulletin of the Faculty of Pharmacy (Cairo University) 40 (2): 153–167.
- Barbe, Jean-Christophe; Bertrand, Alain. (1996). "Quantitative analysis of volatile compounds stemming from oak wood. Application to the aging of wines in barrels". Journal des Sciences et Techniques de la Tonnellerie 2: 77–88.
- Brunke, E. J.; Hammerschmidt, F. J.; Schmaus, G. (1992). "Das etherische Öl von Santolina chamaecyparissus L. (Santolina chamaecyparissus essential oil)". Parfümerie und Kosmetik 73 (9): 617–618, 623–624, 626, 628–630, 632, 634–637.
- Tiemann, Ferdinand (1876). "Ueber die der Coniferyl- und Vanillinreihe angehörigen Verbindungen (Coniferyl- and vanillin series-related compounds)". Berichte der Deutschen Chemischen Gesellschaft 9: 409–423. doi:10.1002/cber.187600901133.
- Noelting, Francis A. M. o-Hydroxy-m-methoxybenzaldehyde (Orthovanillin). Annales de Chimie et de Physique (1910), 19, 476–550.
- Gerngross, Otto. Dyeing hide with o-vanillin and o-protocatechualdehyde and the aldehyde tanning. Angewandte Chemie (1920), 33 (44), 136–138.
- Kubo, Isao; Kinst-Hori, Ikuyo. Tyrosinase inhibitory activity of the olive oil flavor compounds. Journal of Agricultural and Food Chemistry (1999), 47 (11), 4574–4578.
- Watanabe, Kazuko; Ohta, Toshihiro; Shirasu, Yasuhiko. Enhancement and inhibition of mutation by o-vanillin in Escherichia coli. Mutation Research, DNA Repair (1989), 218 (2), 105–109.
- Takahashi, Kazuhiko; Sekiguchi, Mutsuo; Kawazoe, Yutaka. A specific inhibition of induction of adaptive response by o-vanillin, a potent comutagen. Biochemical and Biophysical Research Communications (1989), 162 (3), 1376–1381.
- Leifertova, I.; Hejtmankova, N.; Hlava, H.; Kudrnacova, J.; Santavy, F. Antifungal and antibacterial effects of phenolic substances. A study of the relation between the biological activity and the constitution of the investigated compounds. Acta Universitatis Palackianae Olomucensis, Facultatis Medicae (1975), 74, 83–101.