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Merck
CN

339792

3,4-二丁氧基-3-环丁烯-1,2-二酮

98%

别名:

方酸二正丁酯

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线性分子式:
[CH3(CH2)3O]2C4(=O)2
化学文摘社编号:
分子量:
226.27
NACRES:
NA.22
PubChem Substance ID:
UNSPSC Code:
12352100
MDL number:
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产品名称

3,4-二丁氧基-3-环丁烯-1,2-二酮, 98%

InChI

1S/C12H18O4/c1-3-5-7-15-11-9(13)10(14)12(11)16-8-6-4-2/h3-8H2,1-2H3

SMILES string

CCCCOC1=C(OCCCC)C(=O)C1=O

InChI key

XBRWELTXMQSEIN-UHFFFAOYSA-N

assay

98%

form

liquid

refractive index

n20/D 1.494 (lit.)

bp

139 °C/0.5 mmHg (lit.)

density

1.047 g/mL at 25 °C (lit.)

functional group

ether
ketone

Quality Level

Application

3,4-二丁氧基-3-环丁烯-1,2-二酮用于合成新型半方酸染料,可用于在水性介质中进行高选择性Hg2+传感。它也用于合成3-丁氧基-4-(1,3,3-三甲基-2,3-二氢-1H-2-吲哚基亚甲基)-3-环丁烯-1,2-二酮的中间体方酸染料。

General description

3,4-二丁氧基-3-环丁烯-1,2-二酮是方酸的二烷基酯。

pictograms

Exclamation mark

signalword

Warning

Hazard Classifications

Eye Irrit. 2 - Skin Irrit. 2 - Skin Sens. 1 - STOT SE 3

target_organs

Respiratory system

存储类别

10 - Combustible liquids

wgk

WGK 3

flash_point_f

235.4 °F - closed cup

flash_point_c

113 °C - closed cup

ppe

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

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Cutaneous lymphoid hyperplasia related to squaric acid dibutyl ester.
Eric A Millican et al.
Journal of the American Academy of Dermatology, 65(1), 230-232 (2011-06-18)
Aaron E Scott et al.
Toxicology and applied pharmacology, 183(1), 66-70 (2002-09-10)
The ability of chemical or pharmaceutical agents to induce allergic contact dermatitis (ACD) is of major health and regulatory concern. As such, tests to identify their sensitizing capacity, such as the guinea pig maximization test and the more recently developed
C Ajith et al.
Journal of drugs in dermatology : JDD, 5(3), 262-266 (2006-04-01)
Immunotherapy with sqauric acid dibutyl ester (SADBE) is a well-accepted therapy for alopecia areata. To study efficacy, safety, and factors influencing the outcome in the treatment of alopecia areata. During a 4-year period, 70 patients of alopecia areata, unresponsive to
Rachid Marhaba et al.
Journal of immunology (Baltimore, Md. : 1950), 179(8), 5071-5081 (2007-10-04)
Induction of a chronic eczema is a most efficient therapy for alopecia areata (AA). We had noted a reduction in regulatory T cells during AA induction and wondered whether regulatory T cells may become recruited or expanded during repeated skin
Kazumasa Morita et al.
The Journal of dermatology, 29(10), 661-664 (2002-11-16)
Topical immunotherapy is effective for severe alopecia areata. However, there are patients with alopecia areata refractory to topical immunotherapy alone. We tried SADBE (squaric acid dibutylester) topical immunotherapy combined with topical dry ice cryotherapy, carpronium chloride (a parasympathetic nerve stimulant)

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