| 摘要 |
PURPOSE:Antibiotic BA-843. White substance having the following characteristics: elementary analysis, C 47.9-49.9%, H 6.8-7.9%, N 11.1-13.1%: molecular weight 5000-7000; m.p. 243-253 deg.C specific rotation [alpha]<2>D<5>+0.15+-1 deg. (C=1.0, methanol); UV absorption spectrum shows no peaks at 220-360mmu; IR absorption spectrum 3400, 2950,1730cm<->1, etc.; easily soluble in methanol, etc. hardly soluble in water, ethyl acetate, etc.; color reaction: positive to Sakaguchi reaction, etc., negative to ninhydrin reaction, etc |
