FR 900490 is a new type of immunoactive substance produced by a fungus Discosia sp. F-11809. The colony forming units in culture (cfu-c) in bone marrow cells, which were suppressed by immunosuppressive factor obtained from the serum of sarcoma 180 tumor bearing mouse, was restored to normal level by the addition of FR-900490 in vitro. References: Shibata T, Nakayama O, Okuhara M, Tsurumi Y, Terano H, Kohsaka M. A new immunomodulator, FR-900490. J Antibiot (Tokyo). 1988 Sep;41(9):1163-9. PubMed PMID: 3141334.

纯度：≥98%

CAS：105424-59-7