|  | |  |  | 4-Methoxyfuro[2,3-b]quinolin-8-ol Basic information | 
 | Product Name: | 4-Methoxyfuro[2,3-b]quinolin-8-ol |  | Synonyms: | 4-Methoxyfuro[2,3-b]quinolin-8-ol;Robustine;8-Hydroxydictamnine;NPLC 0314;Robustine (Haplophyllum);8-hydroxy dictanmnine;Furo[2,3-b]quinolin-8-ol, 4-methoxy-;alkaloid,phosphodiesterase,Phosphodiesterase (PDE),Robustine,PDE5A,inhibit,Inhibitor |  | CAS: | 2255-50-7 |  | MF: | C12H9NO3 |  | MW: | 215.2 |  | EINECS: |  |  | Product Categories: | Alkaloids |  | Mol File: | 2255-50-7.mol |  | ![4-Methoxyfuro[2,3-b]quinolin-8-ol Structure](CAS/GIF/2255-50-7.gif) | 
|  |  | 4-Methoxyfuro[2,3-b]quinolin-8-ol Chemical Properties | 
 | Melting point | 148-149℃ (ethanol ) |  | Boiling point | 411.9±40.0 °C(Predicted) |  | density | 1.378±0.06 g/cm3(Predicted) |  | storage temp. | 4°C, protect from light |  | pka | 5.34±0.30(Predicted) | 
|  |  | 4-Methoxyfuro[2,3-b]quinolin-8-ol Usage And Synthesis | 
 | Description | Haplophyllum robustum Bge. yields this alkaloid which forms colourless crystals from EtOH. It forms a series of crystalline salts and derivatives including the hydrochloride, m.p. 199-200°C; picrate, m.p. I 79-180°C; acetyl derivative, m.p.174-5°C; methyl derivative, m.p. 140-2°C and the tetrahydrG compound with 
m.p.201-2°C. |  | Definition | ChEBI: A quinoline alkaloid that is furo[2,3-b]quinoline substituted by a methoxy and a hydroxy group at positions 4 and 8 respectively. |  | References | Fakhritdinova, Sidyakin, Yunusov,Khim. Prir.Soedin., 1, 107 (1965) Faizutdinova, Yunusov, ibid, 3, 260 (1967)
 Narasimhan, Paradkar, Alurkar, Tetrahedron, 27,1351 (1971)
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|  |  | 4-Methoxyfuro[2,3-b]quinolin-8-ol Preparation Products And Raw materials | 
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