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O1877

Sigma-Aldrich

Ochratoxin A

from Petromyces albertensis, ≥98% (HPLC), powder, mycotoxin

Synonym(s):

N-[(3R)-(5-Chloro-8-hydroxy-3-methyl-1-oxo-7-isochromanyl)carbonyl]-L-phenylalanine

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About This Item

Empirical Formula (Hill Notation):
C20H18ClNO6
CAS Number:
Molecular Weight:
403.81
Beilstein:
1301486
MDL number:
UNSPSC Code:
12352200
PubChem Substance ID:
NACRES:
NA.77

Product Name

Ochratoxin A, from Petromyces albertensis, ≥98% (HPLC)

biological source

Petromyces albertensis

Quality Level

Assay

≥98% (HPLC)

form

powder

impurities

Benzene, free

solubility

ethanol: soluble

Mode of action

enzyme | inhibits
protein synthesis | interferes

storage temp.

2-8°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

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Application

Ochratoxin A has been used as a mycotoxin:
  • to test its effect on metabolism and hypoxia in human embryonic kidney (HEK293) cells
  • to test its cytotoxic effects in bovine mammary epithelial cells
  • as a standard for gamma radiation studies with food products and in cytotoxic studies using Hep G2 cells

Biochem/physiol Actions

Ochratoxin A (OTA), a renal toxin, is produced majorly by Aspergillus and Penicillium fungal species. It is immunotoxic, teratogenic myelotoxic, and mutagenic. It effectively interrupts the intestinal barrier functions. OTA displays a long elimination half-life and stimulates the major inflammatory cytokines release.
Ochratoxin A is a mycotoxin found in food that is nephrotoxic and carcinogenic in the kidney and induces differentiation in cloned renal cell lines. Increases endoplasmic reticulum ATP-dependent Ca2+ pump activity.

Preparation Note

This product is also soluble in chloroform (9.80 - 10.20 mg/ml), methanol (10 mg/ml), ethanol (50 mM), and DMSO (100 mM).

Pictograms

Skull and crossbonesHealth hazard

Signal Word

Danger

Hazard Statements

Hazard Classifications

Acute Tox. 2 Oral - Carc. 2

Storage Class Code

6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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A Dörrenhaus et al.
Archives of toxicology, 71(11), 709-713 (1997-01-01)
In cultured rat hepatocytes the mycotoxin ochratoxin A (OTA) induced unscheduled DNA synthesis (UDS) only in a narrow concentration range. Using a culture medium supplemented with 1% fetal calf serum, at 750 nM OTA a weak induction and at 1
I Baudrimont et al.
Toxicology, 89(2), 101-111 (1994-04-18)
Ochratoxin A (OTA) is a mycotoxin produced by Aspergillus ochraceus as well as other molds. It is a natural contaminant of mouldy food and feed. OTA has a number of toxic effects, the most prominent being nephrotoxicity. Furthermore, OTA is
X Chong et al.
Biochemical pharmacology, 44(7), 1401-1409 (1992-10-06)
A disruption of calcium homeostasis, leading to a sustained increase in cytosolic calcium levels, has been associated with cytotoxicity in response to a variety of agents in different cell types. We have observed that administration of a single high dose
H Schramek et al.
The Journal of pharmacology and experimental therapeutics, 283(3), 1460-1468 (1998-02-12)
The kidneys represent one of the main targets of ochratoxin A (OTA), a secondary fungal metabolite that is produced by certain species of Aspergillus and Penicillium. OTA has the ability to disturb Madin-Darby canine kidney (MDCK) cell pH homeostasis, leading
D Hoehler et al.
Biochimica et biophysica acta, 1357(2), 225-233 (1997-06-27)
Oxidative damage may be one of the manifestations of cellular damage in the toxicity of ochratoxin A (OA). OA; its three natural analogs, OB, OC and O alpha; and three synthetic analogs, the ethyl amide of OA (OE-OA), O-methylated OA

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