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Merck
CN

33395

Methamidophos

PESTANAL®, analytical standard

Synonym(s):

O,S-Dimethyl phosphoramidothioate

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About This Item

Empirical Formula (Hill Notation):
C2H8NO2PS
CAS Number:
10265-92-6
Molecular Weight:
141.13
UNSPSC Code:
41116107
NACRES:
NA.24
PubChem Substance ID:
329754521
EC Number:
233-606-0
Beilstein/REAXYS Number:
8137714
MDL number:
MFCD00041808

Key Documents

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InChI key

NNKVPIKMPCQWCG-UHFFFAOYSA-N

InChI

1S/C2H8NO2PS/c1-5-6(3,4)7-2/h1-2H3,(H2,3,4)

SMILES string

COP(N)(=O)SC

grade

analytical standard

product line

PESTANAL®

shelf life

limited shelf life, expiry date on the label

technique(s)

HPLC: suitable, NMR: suitable, gas chromatography (GC): suitable

impurities

≤0.5% water (Karl Fischer)

mp

42-45 °C

suitability

passes test for identity (NMR)

application(s)

agriculture
environmental

format

neat

storage temp.

−20°C

Quality Level

100

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General description

Methamidophos is a broad spectrum organophosphate pesticide used for controlling a variety of plant and soil pests in agricultural crops.

Application

Methamidophos may be used as a reference standard for the determination of the analyte in human serum samples using gas chromatography with mass spectrometry (GC-MS).
Refer to the product′s Certificate of Analysis for more information on a suitable instrument technique. Contact Technical Service for further support.

Legal Information

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

pictograms

Skull and crossbonesEnvironment
GHS06,GHS09

signalword

Danger

Hazard Classifications

Acute Tox. 2 Dermal - Acute Tox. 2 Inhalation - Acute Tox. 2 Oral - Aquatic Acute 1 - Aquatic Chronic 1

Storage Class

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

wgk

WGK 3

flash_point_f

413.6 °F - closed cup

flash_point_c

212 °C - closed cup

ppe

dust mask type N95 (US), Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges

Regulatory Information

剧毒化学品
北京危化品禁限
危险化学品
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Certificates of Analysis (COA)

Lot/Batch Number
BCCL1280
BCCG2949
BCCB0580
BCBT1513
BCBS9211V

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Simultaneous analysis of acephate and methamidophos in human serum by improved extraction and GC-MS.
Adachi N, et al.
Forensic Toxicology, 26(2), 76-76 (2008)
Impacts of methamidophos on the biochemical, catabolic, and genetic characteristics of soil microbial communities.
Wang CM, et al.
Critical reviews in environmental science and technology, 40(3), 778-788 (2008)
Guilherme L Emerick et al.
Environmental toxicology and chemistry, 31(2), 239-245 (2011-11-03)
Many chiral pesticides are introduced into the environment as racemates, although their pesticidal activity is usually the result of preferential reactivity of only one enantiomer, while the other enantiomer may have toxic effects against nontarget organisms. Methamidophos (O,S-dimethyl phosphoramidothioate), a
Zhong-Lan Shen et al.
Bioscience, biotechnology, and biochemistry, 75(3), 473-479 (2011-03-11)
An analytical methodology for the analysis of methamidophos in water and soil samples incorporating a molecularly imprinted solid-phase extraction process using methamidophos-imprinted polymer was developed. Binding study demonstrated that the polymer exhibited excellent affinity and high selectivity to the methamidophos.
Hongkun Li et al.
Talanta, 87, 93-99 (2011-11-22)
With citrate-coated Au nanoparticles as colorimetric probe, a novel visual method for rapid assay of organophosphorus pesticides has been developed. The assay principle is based on catalytic hydrolysis of acetylthiocholine into thiocholine by acetylcholinesterase, which induces the aggregation of Au
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