339792
3,4-Dibutoxy-3-cyclobutene-1,2-dione
98%
Sinônimo(s):
Dibutyl squarate
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5 G
R$ 788,00
25 G
R$ 3.491,00
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5 G
R$ 788,00
25 G
R$ 3.491,00
About This Item
Fórmula linear:
[CH3(CH2)3O]2C4(=O)2
Número CAS:
Peso molecular:
226.27
Número MDL:
Código UNSPSC:
12352100
ID de substância PubChem:
NACRES:
NA.22
Produtos recomendados
Nível de qualidade
Ensaio
98%
Formulário
liquid
índice de refração
n20/D 1.494 (lit.)
p.e.
139 °C/0.5 mmHg (lit.)
densidade
1.047 g/mL at 25 °C (lit.)
grupo funcional
ether
ketone
cadeia de caracteres SMILES
CCCCOC1=C(OCCCC)C(=O)C1=O
InChI
1S/C12H18O4/c1-3-5-7-15-11-9(13)10(14)12(11)16-8-6-4-2/h3-8H2,1-2H3
chave InChI
XBRWELTXMQSEIN-UHFFFAOYSA-N
Categorias relacionadas
Descrição geral
3,4-Dibutoxy-3-cyclobutene-1,2-dione is the dialkyl ester of squaric acid.[1]
Aplicação
3,4-Dibutoxy-3-cyclobutene-1,2-dione was used in the synthesis of novel semisquarylium dye, useful for highly selective Hg2+ sensing in aqueous media.[2] It was also employed in the synthesis of 3-butoxy-4-(1,3,3-trimethyl-2,3-dihydro-1H-2-indolylidenemethyl)-3-cyclobutene-1,2-dione, intermediate for the synthesis of squaryl dyes.[3]
Palavra indicadora
Warning
Frases de perigo
Declarações de precaução
Classificações de perigo
Eye Irrit. 2 - Skin Irrit. 2 - Skin Sens. 1 - STOT SE 3
Órgãos-alvo
Respiratory system
Código de classe de armazenamento
10 - Combustible liquids
Classe de risco de água (WGK)
WGK 3
Ponto de fulgor (°F)
235.4 °F - closed cup
Ponto de fulgor (°C)
113 °C - closed cup
Equipamento de proteção individual
Eyeshields, Faceshields, Gloves, type ABEK (EN14387) respirator filter
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International journal of dermatology, 41(11), 748-753 (2002-11-28)
Alopecia areata is believed to be an autoimmune condition with a worldwide occurrence. It usually presents as patchy, nonscarring hair loss. There is a paucity of clinical data in Asians. To study the epidemiology, clinical aspects, associations, and treatment of
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
F Dall'oglio et al.
The Journal of dermatological treatment, 16(1), 10-14 (2005-05-18)
Severe alopecia areata (AA) may have a chronic relapsing course and is often resistant to current treatments. The aim of our study was to evaluate whether topical immunotherapy with squaric acid dibutylester (SADBE) is able to improve the course of
Seventeen cases of alopecia areata: combination of SADBE topical immunotherapy with other therapies.
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)
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
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