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243132

Sigma-Aldrich

2-Isopropyl-3-methoxypyrazine

97%

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About This Item

Formula empirica (notazione di Hill):
C8H12N2O
Numero CAS:
25773-40-4
Peso molecolare:
152.19
Numero CE:
247-256-1
Numero MDL:
MFCD00006135
Codice UNSPSC:
12352100
ID PubChem:
24854600
NACRES:
NA.22

Livello qualitativo

100

Saggio

97%

Stato

liquid

Indice di rifrazione

n20/D 1.494 (lit.)

Densità

0.996 g/mL at 25 °C (lit.)

Stringa SMILE

COc1nccnc1C(C)C

InChI

1S/C8H12N2O/c1-6(2)7-8(11-3)10-5-4-9-7/h4-6H,1-3H3
NTOPKICPEQUPPH-UHFFFAOYSA-N

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Descrizione generale

2-Isopropyl-3-methoxypyrazine, a taste and odor compound, was determined by headspace solid-phase microextraction (SPME) coupled with gas chromatography-mass spectrometry.

Pittogrammi

Exclamation mark
GHS07

Avvertenze

Warning

Indicazioni di pericolo

H315,H319,H335

Classi di pericolo

Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

Organi bersaglio

Respiratory system

Codice della classe di stoccaggio

10 - Combustible liquids

Classe di pericolosità dell'acqua (WGK)

WGK 3

Punto d’infiammabilità (°F)

152.6 °F - closed cup

Punto d’infiammabilità (°C)

67 °C - closed cup

Dispositivi di protezione individuale

Eyeshields, Gloves, type ABEK (EN14387) respirator filter

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Certificati d'analisi (COA)

Lot/Batch Number
MKCF9341
MKCB5483
MKBQ9662V
MKBP1375V
MKBJ0678V

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Sigma-Aldrich

743364

2-Methylisoborneol

(±)-Geosmin solution 2 mg/mL in methanol, ≥97%

Sigma-Aldrich

G5908

(±)-Geosmin solution

2-Methoxy-3-methylpyrazine ≥99%, FCC, FG

Sigma-Aldrich

W318302

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β-Cyclocitral analytical standard

Supelco

16976

β-Cyclocitral

(±)-Geosmin and 2-Methylisoborneol Solution certified reference material, TraceCERT®, 100 μg/mL each component in methanol, ampule of 1 mL

Supelco

CRM47525

(±)-Geosmin and 2-Methylisoborneol Solution

2-Methylisoborneol solution certified reference material, TraceCERT®, 100 μg/mL in methanol, ampule of 1 mL

Supelco

CRM47523

2-Methylisoborneol solution

Profile: What is that smell?
Erik Vance
Nature, 455(7214), 726-728 (2008-10-10)
G J Pickering et al.
Journal of food science, 72(7), S468-S472 (2007-11-13)
2-Isopropyl-3-methoxypyrazine (IPMP) is a grape-derived component of wine flavor in some wine varieties as well as the causal compound of the off-flavor known as ladybug taint (LBT), which occurs when Harmonia axyridis beetles are incorporated with the grapes during juice
Susanne Kögel et al.
Journal of chemical ecology, 38(7), 854-864 (2012-06-01)
Food type can affect all functional aspects of an insect's life. We investigated the effects of different diet regimes on life history parameters of the ladybird beetle Harmonia axyridis. Furthermore, we tested the importance of elytral color, sex, and diet
G J Pickering et al.
Journal of food science, 73(6), S262-S266 (2009-02-26)
2-isopropyl-3-methoxypyrazine (IPMP) is the compound responsible for the off-flavor known as ladybug taint, which occurs when Harmnonia axyridis beetles become incorporated with the grapes during juice processing. It is also an important grape-derived component of juice flavor in some varieties.
Volatile substances from actinomycetes: their role in the odor pollution of water.
N N Gerber
CRC critical reviews in microbiology, 7(3), 191-214 (1979-11-01)
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Protocolli

Standard Methods 6040D: GC Analysis of Geosmin and 2-MIB on SLB®-5ms after SPME using 50/30 µm DVB/Carboxen/PDMS Fiber

Separation of 2-Isopropyl-3-methoxypyrazine 20 ppt; 2-Isobutyl-3-methoxypyrazine; 2-Methylisoborneol; (±)-Geosmin 10 ppt

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