32937

Ochratoxin A

from Aspergillus ochraceus, reference material

• Synonym(s): N-[(3R)-(5-Chloro-8-hydroxy-3-methyl-1-oxo-7-isochromanyl)carbonyl]-L-phenylalanine
• Empirical Formula (Hill Notation): C₂₀H₁₈ClNO₆
• CAS Number: 303-47-9
• Molecular Weight: 403.81
• Beilstein/REAXYS Number: 1301486
• EC Number: 206-143-7
• MDL number: MFCD00078079
• UNSPSC Code: 85151701
• PubChem Substance ID: 329754398

Properties

• biological source: Aspergillus ochraceus
• grade: analytical standard; reference material
• shelf life: limited shelf life, expiry date on the label
• technique(s): HPLC: suitable; gas chromatography (GC): suitable
• application(s): cleaning products; cosmetics; food and beverages; personal care
• format: neat
• storage temp.: −20°C
• SMILES string: C[C@@H]1Cc2c(Cl)cc(c(O)c2C(=O)O1)C(=O)N[C@@H](Cc3ccccc3)C(O)=O
• InChI: 1S/C20H18ClNO6/c1-10-7-12-14(21)9-13(17(23)16(12)20(27)28-10)18(24)22-15(19(25)26)8-11-5-3-2-4-6-11/h2-6,9-10,15,23H,7-8H2,1H3,(H,22,24)(H,25,26)/t10-,15+/m1/s1
• InChI key: RWQKHEORZBHNRI-BMIGLBTASA-N

Description

General description

Ochratoxin A, a mycotoxin, is a naturally occurring secondary metabolite, produced by filamentous fungi, such as Aspergillus and Penicillium. It has been classified as a group 2B substance by International Agency for Research on Cancer, for possibly being carcinogenic to humans

Application

The CRM can also be used as follows:

• Identification and determination of ochratoxin A in different types of commercial coffee samples using dispersive liquid-liquid microextraction-solidification of a floating organic drop (DLLME-SFO) for sample treatment and ultra high-performance liquid chromatography-positive electrospray ionization-tandem mass spectrometry (UHPLC-(+-ESI)-MS/MS)
• Determination of ochratoxin A in beer samples by a selective method based on salting-out assisted liquid-liquid extraction (SALLE) and ultra high-performance liquid chromatography-tandem mass spectrometry (UHPLC-MS/MS)
• Simultaneous determination of ochratoxin A and ochratoxin B in Tokaj wine samples using online solid phase extraction (SPE) combined with high-performance liquid chromatography-fluorescence detection(HPLC-FD)
• Development of an online-SPE-HPLC method to determine ochratoxin A in wine samples
• Electrochemical determination of ochratoxin A using an aptamer-based on functionalized graphene (f-graphene) doped chitosan in grape juice samples by differential pulse voltammetry

Other Notes

Refer to the product′s Certificate of Analysis for more information on a suitable instrument technique. Contact Technical Service for further support.

Safety Information

• pictograms: GHS06,GHS08
• signalword: Danger
• hcodes: H300,H351
• pcodes: P201 - P301 + P310 + P330
• Hazard Classifications: Acute Tox. 2 Oral - Carc. 2
• Storage Class: 6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials
• wgk_germany: WGK 3
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges