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questiomycin A

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CAS Number: 1916-59-2Picture of molecule3D/inchi
FDA UNII: Search
Nikkaji Web:J50.194H
Beilstein Number:0014215
XlogP3-AA:1.00 (est)
Molecular Weight:212.20816000
Formula:C12 H8 N2 O2
NMR Predictor:Predict (works with chrome, Edge or firefox)
Category:natural substances and extractives
US / EU / FDA / JECFA / FEMA / FLAVIS / Scholar / Patent Information:
Google Scholar:Search
Google Books:Search
Google Scholar: with word "volatile"Search
Google Scholar: with word "flavor"Search
Google Scholar: with word "odor"Search
Google Patents:Search
US Patents:Search
EU Patents:Search
Pubchem Patents:Search
Physical Properties:
Assay: 95.00 to 100.00
Food Chemicals Codex Listed: No
Soluble in:
 water, 4.035e+004 mg/L @ 25 °C (est)
Organoleptic Properties:
Odor and/or flavor descriptions from others (if found).
Cosmetic Information:
None found
BOC Sciences
For experimental / research use only.
Questiomycin A >98% by HPLC
Odor: characteristic
Use: A phenoxazine produced by several streptomyces species and some fungi and bacteria; weakly active against bacteria, fungi, plants and tumour cell lines; inhibits aromatase and sulfatases; stimulates cell growth and turnover in vitro
Santa Cruz Biotechnology
For experimental / research use only.
Questiomycin A ≥98%
Safety Information:
Hazards identification
Classification of the substance or mixture
GHS Classification in accordance with 29 CFR 1910 (OSHA HCS)
None found.
GHS Label elements, including precautionary statements
Hazard statement(s)
None found.
Precautionary statement(s)
None found.
Oral/Parenteral Toxicity:
Not determined
Dermal Toxicity:
Not determined
Inhalation Toxicity:
Not determined
Safety in Use Information:
natural substances and extractives
Recommendation for questiomycin A usage levels up to:
 not for fragrance use.
Recommendation for questiomycin A flavor usage levels up to:
 not for flavor use.
Safety References:
EPI System: View
AIDS Citations:Search
Cancer Citations:Search
Toxicology Citations:Search
EPA ACToR:Toxicology Data
EPA Substance Registry Services (SRS):Registry
Laboratory Chemical Safety Summary :72725
National Institute of Allergy and Infectious Diseases:Data
NIST Chemistry WebBook:Search Inchi
Pubchem (cid):72725
Pubchem (cas):1916-59-2
Other Information:
(IUPAC):Atomic Weights of the Elements 2011 (pdf)
Videos:The Periodic Table of Videos
tgsc:Atomic Weights use for this web site
(IUPAC):Periodic Table of the Elements
KEGG (GenomeNet):C02161
HMDB (The Human Metabolome Database):HMDB30483
VCF-Online:VCF Volatile Compounds in Food
Potential Blenders and core components note
None Found
Potential Uses:
None Found
Occurrence (nature, food, other):note
 calocybe gambosa
Search PMC Picture


PubMed:Questiomycin A stimulates sorafenib-induced cell death via suppression of glucose-regulated protein 78.
PubMed:[Exometabolites of the Fungal Isolates (Genus Penicillium, Section Chrysogena) from Low-Temperature Ecotopes].
PubMed:[Penicillium expansum, a resident fungal strain of the orbital complex Mir, producing xanthocillin X and questiomycin A].
PubMed:Glucosylquestiomycin, a novel antibiotic from Microbispora sp. TP-A0184: fermentation, isolation, structure determination, synthesis and biological activities.
PubMed:The structure of a free radical produced from questiomycin A. Photochemistry of antibiotics. II.
None found
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