2-Methoxy-3-sec-butyl pyrazine
Synonym(s):2-sec-Butyl-3-methoxypyrazine
- CAS NO.：24168-70-5
- Empirical Formula: C9H14N2O
- Molecular Weight: 166.22
- MDL number: MFCD00006136
- EINECS: 246-050-9
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-01-13 11:25:34
What is 2-Methoxy-3-sec-butyl pyrazine?
Description
2-Methoxy-3-(l-methylpropyl)pyrazine is like green peas, galbarum oil, bell pepper. Prepared by condensation of isolencine amide with glyoxal, followed by methylation with CH2N2.
Chemical properties
clear colorless liquid
Chemical properties
2-Methoxy-3-(1-methylpropyl)pyrazine has an odor like green peas, galbanum oil or bell pepper.
Occurrence
Reported found in asparagus, carrot, celery, cucumber, lettuce, peas, bell pepper, ginger, Swiss cheese, white wine, beans, beetroot, parsnip root and pumpkin, sherry and krill.
The Uses of 2-Methoxy-3-sec-butyl pyrazine
A compound contents in musts and wines from Vitis vinifera variety Cabernet Sauvignon
Preparation
By condensation of isoleucine amide with glyoxal, followed by methylation with CH2N2.
Definition
ChEBI: 2-methoxy-3-(1-methylpropyl) pyrazine is a member of pyrazines and an aromatic ether.
Aroma threshold values
Detection: 0.001 ppb. Aroma characteristics at 1.0%: musty, green, vegetative, nutty, peppery and potato-like.
Taste threshold values
Taste characteristics at 1.0 ppm: musty, vegetative, potato, galbanum, fishy and earthy.
General Description
2-sec-Butyl-3-methoxypyrazine was identified as the main source of earthy/bell pepper (EBP) flavor in the Farmstead Cheddar cheeses.
Properties of 2-Methoxy-3-sec-butyl pyrazine
| Boiling point: | 50 °C1 mm Hg(lit.) |
| Density | 1 g/mL at 25 °C |
| refractive index | n |
| FEMA | 3433 | 2-METHOXY-3-(1-METHYLPROPYL)PYRAZINE |
| Flash point: | 171 °F |
| storage temp. | Sealed in dry,Room Temperature |
| solubility | Chloroform (Slightly), Methanol (Slightly) |
| pka | 0.80±0.10(Predicted) |
| form | Liquid |
| color | Clear colorless |
| Specific Gravity | 1.01 |
| Odor | at 0.10 % in dipropylene glycol. musty green pea galbanum bell pepper |
| JECFA Number | 791 |
| CAS DataBase Reference | 24168-70-5(CAS DataBase Reference) |
| NIST Chemistry Reference | Pyrazine, 2-methoxy-3-(1-methylpropyl)-(24168-70-5) |
| EPA Substance Registry System | Pyrazine, 2-methoxy-3-(1-methylpropyl)- (24168-70-5) |
Safety information for 2-Methoxy-3-sec-butyl pyrazine
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H227:Flammable liquids H302:Acute toxicity,oral H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation |
| Precautionary Statement Codes |
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P270:Do not eat, drink or smoke when using this product. P271:Use only outdoors or in a well-ventilated area. P280:Wear protective gloves/protective clothing/eye protection/face protection. P370+P378:In case of fire: Use … for extinction. P403+P235:Store in a well-ventilated place. Keep cool. P501:Dispose of contents/container to..… |
Computed Descriptors for 2-Methoxy-3-sec-butyl pyrazine
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