蘇丹四號(英語:Sudan IV)是一種偶氮染色劑化學式為C24H20N4O,常用於凍結石蠟切片的脂質脂蛋白的染色。

Quick Facts 蘇丹四號 Sudan IV, 識別 ...
蘇丹四號
Sudan IV
系統名
1-(2-methyl-4-(2-methylphenyldiazenyl) phenyl) azonapthalen-2-ol
別名 Sudan R, C.I. Solvent Red 24, C.I. 26105, Lipid Crimson, Oil Red, Oil Red BB, Fat Red B, Oil Red IV, Scarlet Red, Scarlet Red N.F, Scarlet Red Scharlach, Scarlet R
識別
CAS號 85-83-6  checkY
ChemSpider 11252033
SMILES
 
  • Cc4ccccc4/N=N/c3ccc(/N=N/c1c2ccccc2ccc1O)c(C)c3
InChI
 
  • 1S/C24H20N4O/c1-16-7-3-6-10-21(16)26-25-19-12-13-22(17(2)15-19)27-28-24-20-9-5-4-8-18(20)11-14-23(24)29/h3-15,29H,1-2H3/b26-25+,28-27+
InChIKey RCTGMCJBQGBLKT-PAMTUDGEBE
KEGG C19520
性質
化學式 C24H20N4O
熔點 199°C
若非註明,所有數據均出自標準狀態(25 ℃,100 kPa)下。
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蘇丹一號三號和四號被國際癌癥研究機構認定為3級致癌物質。[1]

蘇丹四號的精煉形式稱作Biebrich scarlet R,因此易於Biebrich scarlet混淆。工業上常用於油、蠟等非極性物質的染色。在英國也用作染料,並因此得名Oil Tax Red

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