一二三四区视频,亚洲少妇熟女色,日本久热无码视频网,欧美国产日韩大尺度,亚洲a视频,久久少妇一区二区,日韩999无码视频,刺激久久久久久久,啊啊啊啊不要啊在线

Welcome to chemicalbook!
010-86108875
RFQ
Try our best to find the right business for you.
Do not miss inquiry messages Please log in to view all inquiry messages.

Welcome back!

ChemicalBook >> CAS DataBase List >> Pyrazine

Pyrazine

Pyrazine price.
  • $5 - $912.29
  • Product name: Pyrazine
  • CAS: 290-37-9
  • MF: C4H4N2
  • MW: 80.09
  • EINECS:206-027-6
  • MDL Number:MFCD00006122
  • Synonyms:1$l^{5},4-pyrazin-1-yliuM-1-yl;FEMA NUMBER 4015;1,4-Diazabenzene;p-Diazine;1,4-DIAZINE;zhejiangjianfengpharmaceuticalholdingspyrazine ;PYRAZINE MIXTURE;PYRAZINE
69 prices
Selected condition:
Brand
  • aablocks
  • AK Scientific
  • Ambeed
  • American Custom Chemicals Corporation
  • Arctom
  • Chemenu
  • Chem-Impex
  • Frontier Specialty Chemicals
  • Matrix Scientific
  • Medical Isotopes, Inc.
  • Oakwood
  • Sigma-Aldrich
  • TCI Chemical
  • Thermo Scientific Chemicals
  • TRC
Package
  • 1G
  • sample-k
  • 100mg
  • 2g
  • 2.5G
  • 5g
  • 10g
  • 25g
  • 50g
  • 100.00g
  • 100g
  • 500g
  • 500.00g
  • 1kg
  • 1000g
  • 1 each
  • 1 unit
  • 100 g
  • Manufactureraablocks
  • Product numberAA002V3F
  • Product descriptionPyrazine ≥98%
  • Packaging10g
  • Price$10
  • Updated2026-05-28
  • Buy
  • Manufactureraablocks
  • Product numberAA002V3F
  • Product descriptionPyrazine ≥98%
  • Packaging50g
  • Price$26
  • Updated2026-05-28
  • Buy
  • Manufactureraablocks
  • Product numberAA002V3F
  • Product descriptionPyrazine >98.0%(GC)
  • Packaging25g
  • Price$17
  • Updated2026-05-28
  • Buy
  • Manufactureraablocks
  • Product numberAA002V3F
  • Product descriptionPyrazine ≥98%
  • Packaging100g
  • Price$40
  • Updated2026-05-28
  • Buy
  • Manufactureraablocks
  • Product numberAA002V3F
  • Product descriptionPyrazine ≥99%
  • Packaging500g
  • Price$139
  • Updated2026-05-28
  • Buy
  • ManufacturerAK Scientific
  • Product number9248AD
  • Product descriptionPyrazine
  • Packaging500g
  • Price$206
  • Updated2021-12-16
  • Buy
  • ManufacturerAK Scientific
  • Product numberJ52436
  • Product descriptionPyrazine
  • Packaging100g
  • Price$59
  • Updated2021-12-16
  • Buy
  • ManufacturerAK Scientific
  • Product numberJ52436
  • Product descriptionPyrazine
  • Packaging5g
  • Price$10
  • Updated2021-12-16
  • Buy
  • ManufacturerAmbeed
  • Product numberA508019
  • Product descriptionPyrazine 98%
  • Packaging5g
  • Price$5
  • Updated2021-12-16
  • Buy
  • ManufacturerAmbeed
  • Product numberA508019
  • Product descriptionPyrazine 98%
  • Packaging10g
  • Price$7
  • Updated2021-12-16
  • Buy
  • ManufacturerAmbeed
  • Product numberA508019
  • Product descriptionPyrazine 98%
  • Packaging25g
  • Price$9
  • Updated2021-12-16
  • Buy
  • ManufacturerAmerican Custom Chemicals Corporation
  • Product numberFFG0002338
  • Product descriptionPYRAZINE 95.00%
  • Packaging1G
  • Price$619.7
  • Updated2021-12-16
  • Buy
  • ManufacturerAmerican Custom Chemicals Corporation
  • Product numberFFG0002338
  • Product descriptionPYRAZINE 95.00%
  • Packaging2.5G
  • Price$796.77
  • Updated2021-12-16
  • Buy
  • ManufacturerAmerican Custom Chemicals Corporation
  • Product numberFFG0002338
  • Product descriptionPYRAZINE 95.00%
  • Packaging5G
  • Price$912.29
  • Updated2021-12-16
  • Buy
  • ManufacturerArctom
  • Product numberBD-A508019
  • Product descriptionPyrazine 98%
  • Packaging500g
  • Price$74
  • Updated2026-05-25
  • Buy
  • ManufacturerArctom
  • Product numberBD-A508019
  • Product descriptionPyrazine 98%
  • Packaging500g
  • Price$74
  • Updated2026-05-26
  • Buy
Manufacturer Product number Product description Packaging Price Updated Buy
aablocks AA002V3F Pyrazine ≥98% 10g $10 2026-05-28 Buy
aablocks AA002V3F Pyrazine ≥98% 50g $26 2026-05-28 Buy
aablocks AA002V3F Pyrazine >98.0%(GC) 25g $17 2026-05-28 Buy
aablocks AA002V3F Pyrazine ≥98% 100g $40 2026-05-28 Buy
aablocks AA002V3F Pyrazine ≥99% 500g $139 2026-05-28 Buy
AK Scientific 9248AD Pyrazine 500g $206 2021-12-16 Buy
AK Scientific J52436 Pyrazine 100g $59 2021-12-16 Buy
AK Scientific J52436 Pyrazine 5g $10 2021-12-16 Buy
Ambeed A508019 Pyrazine 98% 5g $5 2021-12-16 Buy
Ambeed A508019 Pyrazine 98% 10g $7 2021-12-16 Buy
Ambeed A508019 Pyrazine 98% 25g $9 2021-12-16 Buy
American Custom Chemicals Corporation FFG0002338 PYRAZINE 95.00% 1G $619.7 2021-12-16 Buy
American Custom Chemicals Corporation FFG0002338 PYRAZINE 95.00% 2.5G $796.77 2021-12-16 Buy
American Custom Chemicals Corporation FFG0002338 PYRAZINE 95.00% 5G $912.29 2021-12-16 Buy
Arctom BD-A508019 Pyrazine 98% 500g $74 2026-05-25 Buy
Arctom BD-A508019 Pyrazine 98% 500g $74 2026-05-26 Buy

Properties

Melting point :50-56 °C (lit.)
Boiling point :115-116 °C (lit.)
Density :1.031 g/mL at 25 °C (lit.)
refractive index :1.5235
FEMA :4015 | PYRAZINE
Flash point :132 °F
storage temp. :Store below +30°C.
solubility :SOLUBLE
pka :0.65(at 27℃)
form :Crystals
Specific Gravity :1.031
color :White
Odor :at 0.10 % in propylene glycol. pungent sweet corn like roasted hazelnut barly
Odor Type :nutty
biological source :synthetic
Water Solubility :SOLUBLE
Sensitive :Hygroscopic
Merck :14,7957
JECFA Number :951
BRN :103905
Dielectric constant :2.7999999999999998
Stability :Stable. Highly flammable. Incompatible with acids, oxidizing agents.
InChI :1S/C4H4N2/c1-2-6-4-3-5-1/h1-4H
InChIKey :KYQCOXFCLRTKLS-UHFFFAOYSA-N
SMILES :c1cnccn1
LogP :-0.26
CAS DataBase Reference :290-37-9(CAS DataBase Reference)
NIST Chemistry Reference :Pyrazine(290-37-9)
EPA Substance Registry System :Pyrazine (290-37-9)

Safety Information

Symbol(GHS): Flame (GHS02)
Signal word: Danger
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram P-Codes
H228 Flammable solid Flammable solids Category 1
Category 2
Danger
Warning
P210, P240,P241, P280, P370+P378
Precautionary statements:
P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking.
P240 Ground/bond container and receiving equipment.
P241 Use explosion-proof electrical/ventilating/lighting/…/equipment.
P280 Wear protective gloves/protective clothing/eye protection/face protection.
P370+P378 In case of fire: Use … for extinction.

Description

Pyrazine is a heterocyclic aromatic organic compound and can be reacted to obtain diverse pyrazine derivatives. Pyrazines are important contributors to the flavor of various roasted, toasted, or similarly heated foods. Pyrazine derivatives exhibit a wide variety of aromas in food, e.g. 2-methoxy-3-isopropylpyrazine produces a green pea odor. Pyrazines and pyrazine derivatives are typically used as flavor agent. Pyrazines and Pyrazine derivatives are also used as fragrances.

Related product price

苗栗县| 岑巩县| 孝感市| 濮阳县| 遂平县| 赣榆县| 河北区| 绥宁县| 措勤县| 武陟县| 荣昌县| 通化县| 郁南县| 沧源| 陈巴尔虎旗| 大关县| 内丘县| 互助| 望都县| 潜山县| 青岛市| 高密市| 集贤县| 高雄市| 通城县| 黄浦区| 邹平县| 河间市| 钟山县| 崇礼县| 仁怀市| 抚远县| 三亚市| 隆德县| 汉川市| 广南县| 台北县| 哈尔滨市| 渝中区| 南皮县| 玉环县|