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E34102

Sigma-Aldrich

(-)-L-乳酸乙酯

98%

别名:

(-)-(S)-2-羟基丙酸乙酯, (S)-(-)-2-羟基丙酸乙酯, L-乳酸乙酯

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5 G
$40.20
100 G
$69.30
500 G
$93.70
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$153.00

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5 G
$40.20
100 G
$69.30
500 G
$93.70
2.5 KG
$153.00

About This Item

经验公式（希尔记法）:
C5H10O3
CAS号:
687-47-8
分子量:
118.13
Beilstein:
1720839
EC 号:
211-694-1
MDL编号:
MFCD00004518
UNSPSC代码:
12352108
PubChem化学物质编号:
24894514
NACRES:
NA.22

$40.20

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蒸汽密度

4.1 (vs air)

质量水平

200

蒸汽压

2 mmHg ( 20 °C)
5 mmHg ( 30 °C)

方案

98%

表单

liquid

旋光性

[α]14/D −10°, neat

自燃温度

752 °F

expl. lim.

1.5 %, 100 °F

折射率

n20/D 1.4130 (lit.)

pH值（酸碱度）

4 (20 °C, 50 g/L)

沸点

154 °C (lit.)

mp

−26 °C (lit.)

密度

1.034 g/mL at 20 °C (lit.)
1.042 g/mL at 25 °C

SMILES字符串

C[C@H](O)C(OCC)=O

InChI

1S/C5H10O3/c1-3-8-5(7)4(2)6/h4,6H,3H2,1-2H3/t4-/m0/s1

InChI key

LZCLXQDLBQLTDK-BYPYZUCNSA-N

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相关类别

一般描述

乳酸乙酯是用于有机合成的绿色环保溶剂。它通常用于多组分反应、环加成反应、不对称诱导、光化学合成和无配体偶联反应等有机反应。[1][2]

应用

(−)-L-乳酸乙酯可用于制备：
  • (R)-(+)-2-甲基环氧乙烷。[3]
  • (S)-2-((叔丁基二甲基硅基)氧基)丙醛，一种用于合成maltepolide的关键中间体。[4]

警示用语：

Danger

危险声明

H226,H318,H335

危险分类

Eye Dam. 1 - Flam. Liq. 3 - STOT SE 3

靶器官

Respiratory system

储存分类代码

3 - Flammable liquids

WGK

WGK 1

闪点(°F)

128.8 °F - closed cup

闪点(°C)

53.8 °C - closed cup

个人防护装备

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

历史批次信息供参考:

分析证书(COA)

Lot/Batch Number
MKCX0439
0000369378
0000347357
0000347357
0000369378

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Ethyl lactate as a tunable solvent for the synthesis of aryl aldimines
Bennett J, et al.
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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
A facile approach for the synthesis of C13-C24 fragments of maltepolides A, C and D
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Questions

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  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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