An internal standard for the quantification of ochratoxin B
Related Products
Unlabeled Version(s)
16167Ochratoxin B
Technical Support & Resources

Visit our FAQ

Contact Us

Toll Free Phone (USA and Canada Only): (888) 526-5351
Direct Phone: (734) 975-3888

Request Technical Support

Technical Support Request

To streamline the process attach the appropriate questionnaire to your inquiry.

Download IHC QuestionnaireDownload WB Questionnaire

View Our Privacy Statement for details on how we use and protect your data. In addition, this site is protected by hCaptcha and its Privacy Policy and Terms of Service apply.

Ochratoxin B-13C20

Item No. 40238

Product Insert (PDF)Safety Data Sheet (SDS) (PDF)
Technical Information
Formal Name
((R)-8-hydroxy-3-(methyl-13C)-1-oxoisochromane-7-carbonyl-13C9)-L-phenylalanine-13C9
Synonyms
  • OTB-13C20
Molecular Formula
[13C]20H19NO6
Formula Weight
389.2
Purity
≥98%
Formulation
A 10 µg/ml solution in methanol
SMILES
O[13C]([13C@H]([13CH2][13C]1=[13CH][13CH]=[13CH][13CH]=[13CH]1)N[13C]([13C]2=[13CH][13CH]=[13C]([13CH2][13C@@H]([13CH3])O[13C]3=O)[13C]3=[13C]2O)=O)=O
InChi Code
InChI=1S/C20H19NO6/c1-11-9-13-7-8-14(17(22)16(13)20(26)27-11)18(23)21-15(19(24)25)10-12-5-3-2-4-6-12/h2-8,11,15,22H,9-10H2,1H3,(H,21,23)(H,24,25)/t11-,15+/m1/s1/i1+1,2+1,3+1,4+1,5+1,6+1,7+1,8+1,9+1,10+1,11+1,12+1,13+1,14+1,15+1,16+1,17+1,18+1,19+1,20+1
InChi Key
DAEYIVCTQUFNTM-IUPBDDTRSA-N
Shipping & Storage Information
Storage
-20°C
Shipping
Wet ice in continental US; may vary elsewhere
Recommended Products

Certificates of Analysis & Batch Specific Data

Provide batch numbers separated by commas to download or request available product inserts, QC sheets, certificates of analysis, data packs, and GC-MS data.

Download most recent Certificate of Analysis for this product

    1.2 ml

    $853

    Add
    Cayman Chemical
    Visit Our Environmental Toxicology Resource Center

    Explore additional resources to study natural toxins, pollutants including PFAS and 6-PPD-Q, and their biological effects.

    ENVIRONMENTAL TOXICOLOGY TOOLS & SERVICES
    Product Description

    Ochratoxin B-13C20 (OTB-13C20) is intended for use as an internal standard for the quantification of ochratoxin B (Item No. 16167) by GC- or LC-MS. OTB is a mycotoxin that has been found in Aspergillus and is a non-chlorinated derivative of OTA (Item No. 11439).1 Unlike OTA, OTB is not genotoxic to HepG2 cells but does inhibit cell division when used at concentrations ranging from 1 to 25 µg/ml.2 It induces mortality (LC50 = 700 nM) and craniofacial malformations (EC50 = 200 nM) in Xenopus embryos.3 OTB has been found in poultry feed.4

    WARNING This product is not for human or veterinary use.

    References & Product Citations
    Product Description References

    1. Varga, J., Kevei, E., Rinyu, E., et al. Ochratoxin production by Aspergillus species. Appl. Environ. Microbiol. 62(12), 4461-4464 (1996).

    2. Knasmüller, S., Cavin, C., Chakraborty, A., et al. Structurally related mycotoxins ochratoxin A, ochratoxin B, and citrinin differ in their genotoxic activities and in their mode of action in human-derived liver (HepG2) cells: Implications for risk assessment. Nutr. Cancer 50(2), 190-197 (2004).

    3. O'Brien, E., Prietz, A., and Dietrich, D.R. Investigation of the teratogenic potential of ochratoxin A and B using the FETAX system. Birth Defects Res. B Dev. Reprod. Toxicol. 74(5), 417-423 (2005).

    4. Ezekiel, C.N., Bandyopadhyay, R., Sulyok, M., et al. Fungal and bacterial metabolites in commercial poultry feed from Nigeria. Food Addit. Contam. Part A Chem. Anal. Control Expo. Risk Assess. 29(8), 1288-1299 (2012).