Pfizer Handbook of Microbial Metabolites 598 



1220 Mycelin-IMO, yellow crystalline, m.p. 214-222° (dec), [a]n^^ 



+70 ±2 (c 1 in 1,4-dioxane) U.V. 243, 294, 335, 355, 373 

 m/j,. Mol. Wt. 335, C 71.29, H 5.96, N 11.31. 



Streptomyces diastatochromogenes 



Koichi Ogata, Masaji Igarashi, Akira Miyake and Hiroichi 

 Yamamoto, Japanese Patent 5898 (1957). 



1221 Mycorhodin, bright red needles, m.p. 200-202° (dec.) U.V. 



420, 471, 250m;x in ethanol. C 58.7 H 5.2 N 2.1. 



Mol. Wt. 698, 635. 



Acid-base indicator. 



Streptomyces sp. 



M. Misiek, A. Gourevitch, B. Heinemann, M. J. Cron, D. F. 

 Whitehead, H. Schmitz, I. R. Hooper and J. Leln, Antibiotics 

 and Chemotherapy 9 280 (1959). 



1222 Mycospocidin (C20H32O9N2),,, colorless crystals, dec. 233°, 



[a]D-" +56° "(c i in pyridine). 



Negative ninhydrin, biuret, Tollens, Fehling, ferric 

 chloride tests. Positive diazo reaction. 



Acid hydrolysis yielded two ninhydrin-positive sub- 

 stances, one perhaps being glycine. 



Streptomyces bobiliae 



Shoshiro Nakamura, Mamoru Aral, Keiko Karasawa and 

 Hiroshi Yonehara, J. Antibiotics (Japan) lOA 248 (1957). 



1223 Mycothricin, colorless crystals, complex consists of strong or- 



ganic bases. 



Negative ninhhydrin, biuret, Fehling, Tollens, Molisch, 

 Millon, maltol and Sakaguchi. 



Streptomyces lavendulae 



G. Rangaswami, Hindustan Antibiotics Bull. 2 46 (1959). 



1224 Mycoticin, CigHsoO-, (proposed), yellow crystals. 



Contains a hydroxyl group, has reducing properties, 

 fluoresces under U.V. 



Streptomyces ruber 



Ruth C. Burke, Jacob H. Swartz, S. S. Chapman and Wei- 

 Yuan Huang, J. Invest. Dermatol. 23 163 (1954). 



1225 Nigericin, C3i,H,;,,0i,, colorless needles, m.p. 246-254°. 



A monobasic acid. 



Streptomyces sp. resembling S. violaceaniger 

 Roger L. Harned, Phil Harter Hidy, Cyril J. Corum and Ken- 

 neth L. Jones, Antibiotics and Chemotherapy 1 594 (1951). 



