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M0120005

Malathion impurity A

European Pharmacopoeia (EP) Reference Standard

Synonym(s):

2-[[Methoxy(methylthio)phosphinyl]thio]butanedioic acid 1,4-diethyl ester, Diethyl (2RS)-2-[(methoxy)(methylsulfanyl)-S-phosphinothioyl]butanedioate

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About This Item

Empirical Formula (Hill Notation):
C10H19O6PS2
CAS Number:
3344-12-5
Molecular Weight:
330.36
UNSPSC Code:
41116107
NACRES:
NA.24
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grade

pharmaceutical primary standard

API family

malathion

manufacturer/tradename

EDQM

application(s)

pharmaceutical (small molecule)

format

neat

storage temp.

−20°C

SMILES string

[P](=O)(SC(CC(=O)OCC)C(=O)OCC)(SC)OC

InChI

1S/C10H19O6PS2/c1-5-15-9(11)7-8(10(12)16-6-2)19-17(13,14-3)18-4/h8H,5-7H2,1-4H3

InChI key

LPQDGVLVYVULMX-UHFFFAOYSA-N

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General description

This product is provided as delivered and specified by the issuing Pharmacopoeia. All information provided in support of this product, including SDS and any product information leaflets have been developed and issued under the Authority of the issuing Pharmacopoeia.For further information and support please go to the website of the issuing Pharmacopoeia.

Application

Malathion impurity A EP Reference standard, intended for use in laboratory tests only as specifically prescribed in the European Pharmacopoeia.

Packaging

The product is delivered as supplied by the issuing Pharmacopoeia. For the current unit quantity, please visit the EDQM reference substance catalogue.

Other Notes

Sales restrictions may apply.

Pictograms

Skull and crossbones
GHS06

Signal Word

Danger

Hazard Statements

H301

Precautionary Statements

P301 + P330 + P331 + P310

Hazard Classifications

Acute Tox. 3 Oral

Storage Class Code

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

WGK

WGK 3

Flash Point(F)

141.8 °F

Flash Point(C)

61 °C

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

FSL

Group 4: Flammable liquids
Type 2 petroleums
Hazardous rank III
Water insoluble liquid

JAN Code

M0120005:
M0120005-1EA:

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Certificates of Analysis (COA)

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T R Fukuto
Journal of environmental science and health. Part. B, Pesticides, food contaminants, and agricultural wastes, 18(1), 89-117 (1983-01-01)
Impurities such as O,S,S-trimethyl phosphorodithioate (TMPD) and the S-methyl isomer of malathion (isomalathion) strongly potentiated the mammalian toxicity of malathion. In contrast, impurities present in the phosphoramidothioate insecticide acephate had an antagonizing effect on its mammalian toxicity. The potentiation of
Rozenn Josse et al.
Chemico-biological interactions, 209, 68-76 (2013-12-18)
Isomalathion is a major impurity of technical grade malathion, one of the most abundantly applied insecticides; however little is known about its hepatotoxicity. In the present study, cytotoxicity and genotoxicity of malathion and isomalathion either individually or in combination, were
C E Berkman et al.
Chemical research in toxicology, 6(5), 724-730 (1993-09-01)
The biomolecular reaction constants (ki), dissociation constants (Kd), and phosphorylation constants (kp) were determined for the enantiomers of malaoxon against rat brain acetylcholinesterase, and for the stereoisomers of isomalathion against rat brain acetylcholinesterase and electric eel acetylcholinesterase. (R)-Malaoxon was an
S Jianmongkol et al.
Toxicology and applied pharmacology, 155(1), 43-53 (1999-02-26)
Inhibition of acetylcholinesterase (AChE) by isomalathion has been assumed to proceed by expulsion of diethyl thiosuccinyl to produce O, S-dimethyl phosphorylated AChE. If this assumption is correct, AChE inhibited by (1R)- or (1S)-isomalathions should reactivate at the same rate as
C E Berkman et al.
Chemical research in toxicology, 6(5), 718-723 (1993-09-01)
Syntheses of the enantiomers of malathion, malaoxon, and isomalathion are reported herein. Malathion enantiomers were prepared from (R)- or (S)-malic acid in three steps. Enantiomers of malathion were converted to the corresponding enantiomers of malaoxon in 52% yield by oxidation
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