Questiomycin A (C09-1022-464)

Questiomycin A is a phenoxazine produced by several|Streptomyces|species and some fungi and bacteria. Questiomycin A is weakly active against bacteria, fungi, plants and tumour cell lines, and inhibits aromatase and sulfatases. Questiomycin, like other phenoxazines, stimulates cell growth and turnover|in vitro|, an activity possibly related to their ability to form stable free radicals. More recently, questiomycin A has been shown to inhibit pulmonary metastasis caused by mouse melanoma cells. Questiomycin A and related phenoxazines are important dereplication standards in discovery research to eliminate leads due to high amounts of weakly potent actives. Specification: ≥98% Molecular Formula: C12H8N2O2 Molecular Weight: 212.2 PubChem CID: 72725 Isomeric SMILES: C1=CC=C2C(=C1)N=C3C=C(C(=O)C=C3O2)N Related Documents: https://ald-pub-files.oss-cn-shanghai.aliyuncs.com/aladdinsci/pdp/sds/1/Q329462-SCI_8a0c00db6812d1a634b692de7d6d3666.pdf