1. 101-A complex (101-A-1 to 101-A-5)

2. 101-A-1

3. 101-A-3

4. 101-A-4

5. 101-A-5

6. 21-Hydroxy-25-demethyl-25-methylthioprotostreptovaricin I

7. 3-Methylthiorifamycin S

8. 3-Methylthiorifamycin SV

9. A39079 factor S-1

10. Ansamitocin P-3'

11. Ansamitocin P-4

12. Antibiotic B-2847RB (structure B-2847Y)

13. Atropisostreptovaricin C

14. Atropisostreptovaricin Fc

15. Awamycin

16. Compound 32,656

17. Halomicin A

18. Halomicin Antibiotic complex

19. Halomicin B

20. Halomicin C

21. Halomicin D

22. Maytansine

23. Naphthomycin A

24. Naphthomycin B (correct structure ?)

25. Naphthomycin H

26. Rifabutin

27. Rifamide

28. Rifampicin

29. Rifamycin

30. Rifamycin B

31. Rifamycin P

32. Rifamycin Q

33. Rifamycin R

34. Rifamycin U

35. Rifapentine

36. Rifaximin

37. Rubradirin

38. Rubradirin B

39. Rubradirin C

40. Streptovaricin A

41. Streptovaricin Antibiotic complex (strucure Streptovaricin C)

42. Streptovaricin B

43. Streptovaricin C

44. Streptovaricin D

45. Streptovaricin Fc

46. Tolypomycin R

47. Tolypomycin Y