2,3,5-???????
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2,3,5-??????? ??
- ???
- 156 °C
- ?? ?
- 171-172 °C (lit.)
- ??
- 0.979 g/mL at 25 °C (lit.)
- ???
- n
20/D 1.5040(lit.)
- ???
- 130 °F
- ?? ??
- Inert atmosphere,Room Temperature
- ???
- ?????(?? ???)
- ?? ?? (pKa)
- 2.69±0.10(Predicted)
- ??? ??
- Liquid
- Specific Gravity
- 0.979
- ??
- Colorless to Light yellow to Light orange
- ??
- ??? ???? ????? ?? ??
- ?? ??
- ???
- ???? ??
- synthetic
- JECFA Number
- 774
- BRN
- 2423
- ?? ??
- flavors and fragrances
- ??? ?? ??
- PERFUMING
- InChI
- 1S/C7H10N2/c1-5-4-8-6(2)7(3)9-5/h4H,1-3H3
- InChIKey
- IAEGWXHKWJGQAZ-UHFFFAOYSA-N
- SMILES
- Cc1cnc(C)c(C)n1
- LogP
- 1.10
- CAS ??????
- 14667-55-1(CAS DataBase Reference)
??
- ?? ? ?? ??
- ?? ? ???? ?? (GHS)
| ??? ?? | Xn | ||
|---|---|---|---|
| ?? ???? ?? | 10-22-36/37/38 | ||
| ????? | 16-26-36/37/39 | ||
| ????(UN No.) | UN 1993 3/PG 3 | ||
| WGK ?? | 3 | ||
| RTECS ?? | UQ3907000 | ||
| TSCA | TSCA listed | ||
| ?? ?? | 3 | ||
| ???? | III | ||
| HS ?? | 29339900 | ||
| ???? ??? | 3 - Flammable liquids | ||
| Hazard Classifications | Acute Tox. 4 Oral Eye Irrit. 2 Flam. Liq. 3 Skin Irrit. 2 STOT SE 3 |
||
| ?? | rat,LD50,oral,806mg/kg (806mg/kg),Drug and Chemical Toxicology. Vol. 3, Pg. 249, 1980. |
2,3,5-??????? C??? ??, ??, ??
??
Reported present in bakery products, roasted barley, cocoa products, coffee, dairy products, meat, peanuts, filberts, pecans, popcorn, potato products, rum and whiskey, soy products, raw asparagus, baked potato, wheaten bread, crispbread, Swiss cheese, coffee, black tea, green tea, roasted barley, roasted filbert, heated beef, roasted peanut, soybean, raw beans, coriander seed, scallop, guava, kohlrabi, bell pepper, blue, Swiss and Gruyere cheese, boiled egg, fatty fish, beer, sherry, barley, peanut, oat products, coconut, beans, mushroom, trassi, almond, macadamia nut, sesame seed, coriander seed, rice, licorice, sweet corn, malt, peated malt, wort, krill, fermented shrimp, crab, okra, crayfish, clam, scallop and squid.??
Trimethylpyrazine is a key aroma compound of dark chocolates differing in organoleptic properties.?? ??
From 2,5-dimethylpyrazine by ring alkylation with MeLi; by condensing propylenediamine with 2,3-butanedione.?? ??
2,3,5-Trimethylpyrazine is present in brown cheese.Safety Profile
Moderately toxic by ingestion. Combustible liquid. When heated to decomposition emits toxic fumes of NOx.2,3,5-??????? ?? ?? ? ???
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?? ??
2,3,5-??????? ?? ??
???( 495)?? ??
| ??? | ?? | ??? | ?? | ?? ? | ?? |
|---|---|---|---|---|---|
| Hebei Chuanghai Biotechnology Co., Ltd | +8615350571055 |
Sibel@chuanghaibio.com | China | 8738 | 58 |
| Hebei Yanxi Chemical Co., Ltd. | +8618531123677 |
faithe@yan-xi.com | China | 5853 | 58 |
| Shandong Deshang Chemical Co., Ltd. | +86-0531-8875-2665 +8613153039501 |
info@deshangchem.com | China | 661 | 58 |
| JINING XINHE CHEMICAL CO., LTD | +8615318402391 |
sales@xinhepharma.com | China | 809 | 58 |
| Hebei Zhuanglai Chemical Trading Co Ltd | +86-16264648883 |
niki@zlchemi.com | China | 7245 | 58 |
| Capot Chemical Co.,Ltd. | +86-（0）57185586718 +86-13336195806 |
sales@capot.com | China | 29640 | 60 |
| Henan Tianfu Chemical Co.,Ltd. | +86-0371-55170693 +86-19937530512 |
info@tianfuchem.com | China | 21586 | 55 |
| career henan chemical co | +86-0371-86658258 +8613203830695 |
sales@coreychem.com | China | 29815 | 58 |
| NINGBO INNO PHARMCHEM CO., LTD. | 13867897135 |
sales@nbinno.com | CHINA | 923 | 58 |
| SHANDONG ZHI SHANG CHEMICAL CO.LTD | +8613065062079 |
sales@sdzschem.com | China | 1497 | 58 |
2,3,5-??????? ?? ??:
2,3,5-??????? ????????
Trimethylsilyl cyanide
Trimethoxypropylsilane
Trimethylsilyl trifluoromethanesulfonate
Trimethylsilylacetylene
Trimethoxysilane
Trimethyl thiazole
Trimethoxysilylpropanethiol
Trimethylsilyl 2-(fluorosulfonyl)difluoroacetate
Trimethyl orthobenzoate
2-Acetyl-3,5-dimethylpyrazine
2,3-Diethyl-5-methylpyrazine
2,3-DICYANO-5-METHYLPYRAZINE
3-Ethyl-2,5-diMethylpyrazine
3,5-dimethyl-2-propylpyrazine
2-CHLORO-3,5,6-TRIPHENYLPYRAZINE
2,3-DICYANO-5,6-DIPHENYLPYRAZINE