Description: Sydowinin B is a xanthone polyketide that has been found in A. sydowii and has immunosuppressant activity. It inhibits LPS- or concanavalin A-induced proliferation of isolated mouse splenic lymphocytes (IC50s = 19.2 and 20.8 μg/ml, respectively). Sydowinin B inhibits superoxide generation in, and elastase release from, isolated human neutrophils induced by cytochalasin B and fMLP with IC50 values of 21.2 and 12.62 μM, respectively.

Name: Sydowinin B
CAS#: 58450-00-3
Chemical Formula: C16H12O7
Exact Mass: 316.0583
Molecular Weight: 316.265
Elemental Analysis: C, 60.76; H, 3.82; O, 35.41

Synonym: Sydowinin B; Sydowinin-B; MS-347b; MS347b; MS 347b;

IUPAC/Chemical Name: 9H-Xanthene-1-carboxylic acid, 2,8-dihydroxy-6-(hydroxymethyl)-9-oxo-, methyl ester

InChi Key: SSBSKLSIZKVBFF-UHFFFAOYSA-N

InChi Code: InChI=1S/C16H12O7/c1-22-16(21)13-8(18)2-3-10-14(13)15(20)12-9(19)4-7(6-17)5-11(12)23-10/h2-5,17-19H,6H2,1H3

SMILES Code: O=C(C1=C(O)C=CC(OC2=C3C(O)=CC(CO)=C2)=C1C3=O)OC

Appearance: Solid powder

Purity: >98% (or refer to the Certificate of Analysis)

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.

Storage Condition: Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).

Solubility: Soluble in DMSO

Shelf Life: >3 years if stored properly

Drug Formulation: This drug may be formulated in DMSO

Stock Solution Storage: 0 - 4 C for short term (days to weeks), or -20 C for long term (months).

HS Tariff Code: 2934.99.9001