Syringaldehyde
Synonym(s):3,5-Dimethoxy-4-hydroxybenzaldehyde;4-Hydroxy-3,5-dimethoxybenzaldehyde
- CAS NO.:134-96-3
- Empirical Formula: C9H10O4
- Molecular Weight: 182.17
- MDL number: MFCD00006943
- EINECS: 205-167-5
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-11-09 21:40:10
What is Syringaldehyde?
Physical properties
light yellow-green to brown crystalline powder.
Chemical properties
4-Hydroxy-3,5-dimethoxybenzaldehyde has sweet, balsamic-floral odor of considerable tenacity. lt has notes in common with Vanillin but is not as sweet and not as Vanilla-like, more floral and slightly greener.
Occurrence
Reported found in pineapple, beer, wine, grape brandy, rum, many different whisky products, sherry, roasted barley and hardwood smoke
The Uses of Syringaldehyde
Syringaldehyde is used in biological studies for the isolation and structural characterization of milled wood lignin, dioxane lignin, and cellulolytic lignin preparation from Brewer''s spent grain.
The Uses of Syringaldehyde
Syringaldehyde may be used as an analytical reference standard for the determination of the analyte in guacoextracts and pharmaceutical preparations,(1) cognacs and wines,(2) plum brandies,(4) and wheat straw(5) by various chromatography techniques.
Definition
ChEBI: A hydroxybenzaldehyde that is 4-hydroxybenzaldehyde substituted by methoxy groups at positions 3 and 5. Isolated from Pisonia aculeata and Panax japonicus var. major, it exhibits hypoglycemic activity.
Preparation
Vanillin is converted to 5-iodovanillin, which is treated with sodium methoxide to form 4-hydroxy-3,5- dimethyxybenzaldehyde.
Aroma threshold values
Aroma characteristics at 1.0%: weak sweet, slightly smoky, cinnamic, vanilla, leather-like with a phenolic medicinal nuance
Synthesis Reference(s)
Canadian Journal of Chemistry, 31, p. 476, 1953 DOI: 10.1139/v53-064
Synthetic Communications, 20, p. 2659, 1990 DOI: 10.1080/00397919008051474
General Description
Syringaldehyde is an aromatic phenolic aldehyde and a degradation product of lignin. It exhibits antioxidant activity and is reported to inhibit prostaglandin synthetase enzyme. The synthetic form of syringaldehyde is commercially used in pharmaceuticals, food, cosmetics, textiles, pulp and paper industries.
Biochem/physiol Actions
Odor at 1.0%
Purification Methods
Crystallise syringaldehyde from pet ether. [Beilstein 8 H 391, 8 IV 2718.]
Properties of Syringaldehyde
Melting point: | 110-113 °C(lit.) |
Boiling point: | 192-193 °C14 mm Hg(lit.) |
Density | 1.013 |
refractive index | 1.4500 (estimate) |
FEMA | 4049 | 4-HYDROXY-3,5,-DIMETHOXY BENZALDEHYDE |
Flash point: | 192-193°C/14mm |
storage temp. | Keep in dark place,Sealed in dry,Room Temperature |
solubility | Chloroform, Methanol (Slightly) |
pka | 7.80±0.23(Predicted) |
form | Crystalline Powder |
color | Light yellow-green to brown |
Odor | at 100.00 %. mild plastic woody tonka sweet |
Water Solubility | very sparingly soluble |
Sensitive | Air Sensitive |
JECFA Number | 1878 |
Merck | 14,9015 |
BRN | 784514 |
Stability: | Hygroscopic |
CAS DataBase Reference | 134-96-3(CAS DataBase Reference) |
NIST Chemistry Reference | Benzaldehyde, 4-hydroxy-3,5-dimethoxy-(134-96-3) |
EPA Substance Registry System | Syringaldehyde (134-96-3) |
Safety information for Syringaldehyde
Signal word | Warning |
Pictogram(s) |
Exclamation Mark Irritant GHS07 |
GHS Hazard Statements |
H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P271:Use only outdoors or in a well-ventilated area. P280:Wear protective gloves/protective clothing/eye protection/face protection. P302+P352:IF ON SKIN: wash with plenty of soap and water. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
Computed Descriptors for Syringaldehyde
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JSK Chemicals
PUNJAB CHEMICALS AND CROP PROTECTION LTD
AVIGYABIOSCIENCES PRIVATE LIMITED
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