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Merck
CN

G5908

Sigma-Aldrich

(±)-土臭素标准液 溶液

2 mg/mL in methanol, ≥97%

别名:

DL-土臭素, rel-(4R,4aR,8aS)-八氢-4,8a-二甲基-4a(2H)-萘酚

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About This Item

经验公式(希尔记法):
C12H22O
CAS号:
分子量:
182.30
EC 号:
MDL编号:
UNSPSC代码:
12352100
PubChem化学物质编号:
NACRES:
NA.22

质量水平

方案

≥97% (calc. on dry substance, GC)
≥97%

浓度

2 mg/mL in methanol

储存温度

−20°C

SMILES字符串

OC21C(CCCC2C)(CCCC1)C

InChI

1S/C12H22O/c1-10-6-5-8-11(2)7-3-4-9-12(10,11)13/h10,13H,3-9H2,1-2H3

InChI key

JLPUXFOGCDVKGO-UHFFFAOYSA-N

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应用

(±)-土臭味素溶液常用于水和食品化学中的气味去除/降解研究。

其他说明

(-)-对映体是甜菜香味的主成分。

警示用语:

Danger

危险分类

Acute Tox. 3 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Flam. Liq. 2 - STOT SE 1

靶器官

Eyes,Central nervous system

储存分类代码

3 - Flammable liquids

WGK

WGK 2

闪点(°F)

51.8 °F - closed cup

闪点(°C)

11 °C - closed cup

个人防护装备

Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter

法规信息

危险化学品

从最新的版本中选择一种:

分析证书(COA)

Lot/Batch Number

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  1. Which document(s) contains shelf-life or expiration date information for a given product?

    If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.

  2. How do I get lot-specific information or a Certificate of Analysis?

    The lot specific COA document can be found by entering the lot number above under the "Documents" section.

  3. How do I find price and availability?

    There are several ways to find pricing and availability for our products. Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote.  USA customers:  1-800-325-3010 or view local office numbers.

  4. What is the Department of Transportation shipping information for this product?

    Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product. 

  5. What can you tell me about the stereochemistry of Sigma-Aldrich's (±)-Geosmin products?

    The geosmin products listed by Sigma-Aldrich (CAS Registry number [16423-19-1]) are synthetic, and would be exactly a 50:50 mixture of the (+) and (-) isomers. Specifically, the natural (-) isomer is (4S,4aS,8aR)-4,8a-Dimethyl-1,2,3,4,5,6,7,8-octahydronaphthalen-4a-ol. Therefore, the unnatural (+) isomer (the mirror image) is (4R,4aR,8aS)-4,8a-Dimethyl-1,2,3,4,5,6,7,8-octahydronaphthalen-4a-ol.This information has not been confirmed by a specific rotation measurement or chiral analysis, but is known based on the method of preparation.

  6. My question is not addressed here, how can I contact Technical Service for assistance?

    Ask a Scientist here.

Removal of 2-MIB and geosmin using UV/persulfate: contributions of hydroxyl and sulfate radicals.
Xie, Pengchao et al.
Water Research, 69(6), 223-233 (2015)
Buttery, R.G., et al.
Journal of Agricultural and Food Chemistry, 24, 419 and 1246-419 and 1246 (1976)
Stable TiO 2-USY zeolite composite coatings for efficient adsorptive and photocatalytic elimination of geosmin from water.
Wee, Lik H et al.
Journal of Material Chemistry A, 3(5), 2258-2264 (2015)
Development of long-life-cycle tablet ceramic adsorbent for geosmin removal from water solution.
Chen, Rongzhi aet al.
Applied Surface Science, 257(6), 2091-2096 (2011)
Shuke Xiao et al.
eLife, 8 (2019-10-28)
Odorant binding proteins (Obps) are expressed at extremely high levels in the antennae of insects, and have long been believed essential for carrying hydrophobic odorants to odor receptors. Previously we found that when one functional type of olfactory sensillum in

实验方案

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

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