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CRM89003

Supelco

Diquat metabolite Dipyridone

certified reference material, TraceCERT®, Manufactured by: Sigma-Aldrich Production GmbH, Switzerland

Synonym(s):

6,7-Dihydrodipyrido[1,2-a:2′,1′-c]pyrazine-4,9-dione, 9,10-Dihydro-8a,10a-diazaphenanthrene-1,8-dione, Diquat dipyridone

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About This Item

Empirical Formula (Hill Notation):
C12H10N2O2
CAS Number:
35022-72-1
Molecular Weight:
214.22
MDL number:
MFCD30719733
UNSPSC Code:
41116107
NACRES:
NA.24

grade

certified reference material
TraceCERT®

Quality Level

300

product line

TraceCERT®

form

solid

shelf life

limited shelf life, expiry date on the label

manufacturer/tradename

Manufactured by: Sigma-Aldrich Production GmbH, Switzerland

storage temp.

2-8°C

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General description

This certified reference material (CRM) is produced and certified in accordance with ISO/IEC 17025 and ISO 17034. This CRM is traceable to primary material from an NMI, e.g. NIST or NMIJ.
Certified content by quantitative NMR incl. uncertainty and expiry date are given on the certificate.
Download your certificate at: http://www.sigma-aldrich.com
Diquat metabolite dipyridone is a common degradation product of diquat. Diquat is a nonselective, defoliant, preharvest, and non-residual bipyridyl herbicide and crop desiccant, normally used as the dibromide salt, to control broad-leaved weeds and grasses. Its activity is based on the liberation of the superoxide anion radical and, subsequently, hydrogen peroxide, leading to tissue destruction by oxidative stress. The herbicidal activity of diquat is more pronounced in daylight, aerobic conditions, high humidity, and temperature.

As per Regulation (EC) No 1107/2009, repealing the directive 91/414/ECC, diquat is not approved for use in the European Union. The maximum residue limit (MRL) for diquat presence in the crops varies between 0.01 mg/kg in most of the commodities to 5 mg/kg for linseed in accordance with Regulation (EU) 2016/1002.

Application

The certified reference material (CRM) is intended to be used as a calibrant for chromatography and other analytical techniques.
The Diquat metabolite dipyridone CRM may also find the following uses:
  • Determination of paraquat, diquat, and two metabolites of diquat (diquat-monopyridone and diquat-dipyridone) in biological materials using high-performance liquid chromatography combined with UV and fluorescence detectors
  • Detection of two metabolites of diquat (diquat-monopyridone and diquat-dipyridone) in urine and serum of poisoned patients after ingestion of a combined herbicide of paraquat and diquat
  • Simultaneous quantitation of diquat and its two metabolites in serum and urine by ion-paired high-performance liquid chromatography
  • To develop a fast ultraperformance liquid chromatography (UPLC)-MS/MS method for the determination of diquat and its two primary metabolites in rat plasma

Recommended products

Find a digital Reference Material for this product available on our online platform ChemisTwin® for NMR. You can use this digital equivalent on ChemisTwin® for your sample identity confirmation and compound quantification (with digital external standard). An NMR spectrum of this substance can be viewed and an online comparison against your sample can be performed with a few mouseclicks. Learn more here and start your free trial.

Legal Information

TraceCERT is a registered trademark of Merck KGaA, Darmstadt, Germany

Signal Word

Danger

Hazard Classifications

Acute Tox. 2 Inhalation - Acute Tox. 3 Dermal - Acute Tox. 3 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Eye Irrit. 2 - Skin Irrit. 2 - Skin Sens. 1 - STOT RE 1 Oral - STOT SE 3

Target Organs

Respiratory system

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

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Certificates of Analysis (COA)

Lot/Batch Number
BCCL1784
BCCF0814

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C Fuke et al.
Archives of toxicology, 70(8), 504-507 (1996-01-01)
This report describes the identification of diquat-dipyridone and diquat-monopyridone as metabolites of diquat, and time course changes of these metabolites plus diquat and paraquat in urine and serum of three poisoned patients who ingested the combination herbicide Preeglox L (containing
Chiaki Fuke et al.
Legal medicine (Tokyo, Japan), 4(3), 156-163 (2003-08-26)
The determination of paraquat, diquat and two metabolites of diquat in biological materials was developed using high-performance liquid chromatography combined with UV and fluorescence detectors. Paraquat, diquat and internal standards (ethyl viologen and o-acetamidophenol) were detected by the UV detector.

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