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851450

Sigma-Aldrich

葡醛内酯

≥99%

别名:

D-(+)-葡萄糖醛酸-3,6-内酯, D-葡糖醛酸-6,3-内酯, D-葡糖醛酸内酯, 葡糖醛酸内酯

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100 G
$124.00
1 KG
$869.00

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100 G
$124.00
1 KG
$869.00

About This Item

经验公式（希尔记法）:
C6H8O6
CAS号:
32449-92-6
分子量:
176.12
Beilstein:
83595
EC 号:
251-053-3
MDL编号:
MFCD00135622
UNSPSC代码:
12352115
PubChem化学物质编号:
24888207
NACRES:
NA.22

$124.00

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方案

≥99%

表单

powder

旋光性

[α]24/D +18.8°, c = 8 in H2O

mp

172-175 °C (lit.)

溶解性

water: soluble 25 mg/mL, clear, colorless

SMILES字符串

O=C([C@@H]([C@@H](O1)[C@H](O)[C@H](O)C1=O)O)[H]

InChI

1S/C6H8O6/c7-1-2(8)5-3(9)4(10)6(11)12-5/h1-5,8-10H/t2-,3+,4-,5+/m0/s1

InChI key

UYUXSRADSPPKRZ-SKNVOMKLSA-N

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相关类别

一般描述

D-(+)-葡糖醛酸 γ-内酯（Glucourono-γ-内酯、葡糖醛酸或甘草酮）是一种碳水化合物衍生物。在动物和人体内转化为 L-抗坏血酸。其分子中含有两个五元环。对其晶体结构进行了研究。[1]

应用

D-(+)-葡糖醛酸 γ-内酯可用于以下研究：
  • 在 2，3，4，-三 (叔丁基-二甲基硅烷）葡萄糖醛酸三氯乙酯的合成中作为起始试剂，这种酯是抗炎药 ML-3000 的 1-O-酰基葡糖苷酸的制备中必需的。[2]
  • 光学活性吡喃葡萄糖的合成。[3]
  • 长链烷基呋喃葡萄糖苷的合成。[4]

储存分类代码

11 - Combustible Solids

WGK

WGK 2

个人防护装备

Eyeshields, Gloves, type N95 (US)

历史批次信息供参考:

分析证书(COA)

Lot/Batch Number
SDBB2389
STBH1181
STBK9804
STBH0355
STBF6746V

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The crystal structure of beta-D-glucurono-gamma-lactone.
S H Kim et al.
Acta crystallographica, 22(5), 733-743 (1967-05-10)
L A Reyner et al.
Physiology & behavior, 75(3), 331-335 (2002-03-19)
Driver sleepiness is a major cause of serious road crashes. Coffee is often used as an effective countermeasure to driver sleepiness. However, the caffeine levels in coffee are variable, whereas certain proprietary "functional energy drinks" (FEDs) contain known levels of
J M Hsu et al.
The Journal of nutrition, 111(1), 141-145 (1981-01-01)
The effect of feeding 0.25% ethionine for 3-10 weeks to male and female rats on urinary and tissue ascorbate contents were studied. The concentrations of ascorbic acid in the urine, blood, liver and adrenals were significantly reduced in the rats
P Florio et al.
Carbohydrate research, 328(4), 445-448 (2000-11-28)
A concise route to novel mimetics of Kdn2en, based on delta4-uronic acids, from D-glucurono-6,3-lactone is presented. Uronic acid-based mimetics in which an aliphatic ether (O-glycoside), a thioether (S-glycoside), or acetamide takes the place of the natural C-6 glycerol sidechain of
J A Horne et al.
Amino acids, 20(1), 83-89 (2001-04-20)
500 ml of a glucose based "energy" drink versus a control without the active ingredients (caffeine, taurine, glucuronolactone) were given double blind to 11 sleepy participants driving an interactive real-car driving simulator. Lane drifting and a secondary task (reaction time)
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Questions

1–3 of 3 Questions  

  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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  3. Does the entry for "Concentration" described as "C=x% H2O after 1 hour" equate to Loss on Drying? If not, what does this specification indicate?

    1 answer

    1. The term "Concentration" denoted as "C=x% H2O after 1 hour" refers to the duration allowed for the material to dissolve in water to reach the specified concentration. This period was implemented because there were reproducibility issues observed when the solution's concentration was measured immediately after mixing.

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