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ddlong221金蟲 (小有名氣)
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[求助]
七烯大環(huán)內(nèi)脂類抗生素怎么溶解??
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七烯大環(huán)內(nèi)脂類抗生素怎么溶解??我買的古曲霉素(Hachimycin)和哈霉素(hamycin)在乙腈,甲醇中溶解不了。在堿性溶液中溶解,但是檢測不到。請各位幫忙分析下。有做過這方面檢測的請告知溶解方法! 另,誰有殺假絲菌素D(Candicidin D),可否貢獻(xiàn)點做標(biāo)品? 先謝謝大家了! |
版主 (文壇精英)
老痞
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Hachimycin Properties: Yellow crystals. Acid reaction. Forms a water-sol sodium salt. Can be pptd as a water-insol salt by acridine derivs such as acriflavine, by sulfa drugs such as homosulfanilamide, by basic antibiotics such as streptomycin base, by enzymes such as papain and lysozyme, by dyes such as methylene blue, and by metallic salts such as CaCl2. LD50 i.p. in mice: 0.05 mg/10-12 g mouse (Hosoya). hamycin Properties: Yellow amorphous powder, no definite mp, decomp 160°. [a]D25+216°. uv max (80% methanol): 383 nm (E1%1cm 916). An amphoteric compd. Almost insol in water, benzene, chloroform, dry lower aliphatic alcohols, ether. Sol in basic solvents such as pyridine, collidine, and in aq lower alcohols. In concd H2SO4 gives stable blue color; no coloration with ferric chloride or with HCl. LD50 i.v. in mice (using sodium carboxymethyl cellulose as a vehicle): 6.16 mg/kg (Williams). Also reported as LD50 i.v. in Swiss mice (using a colloidal suspension): 1.20 mg/kg (Parekh, Dave). |

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