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MedKoo CAT#: 341249

CAS#: 298-00-0

Description: Parathion methyl, or methyl parathion, is an organophosphate pesticide and insecticide, possessing a organothiophosphate group

Price and Availability

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Pricing updated 2020-07-11. Prices are subject to change without notice.

Parathion-methyl is not in stock, may be available through custom synthesis. For cost-effective reason, minimum 1 gram order is requested. The product will be characterized by NMR, HPLC and MS analysis. Purity (HPLC) is usually >98%. CoA, QC data, MSDS will be provided when product is successfully made. The estimated lead time is 2-3 months. Please send email to to inquire quote.

Chemical Structure


Theoretical Analysis

MedKoo Cat#: 341249
Name: Parathion-methyl
CAS#: 298-00-0
Chemical Formula: C8H10NO5PS
Exact Mass: 263.0017
Molecular Weight: 263.2038
Elemental Analysis: C, 36.51; H, 3.83; N, 5.32; O, 30.39; P, 11.77; S, 12.18

Synonym: Parathion-methyl; BAY 11405; BAY-11405; BAY11405.

IUPAC/Chemical Name: Phosphorothioic acid, O,O-dimethyl O-(4-nitrophenyl) ester


InChi Code: InChI=1S/C8H10NO5PS/c1-12-15(16,13-2)14-8-5-3-7(4-6-8)9(10)11/h3-6H,1-2H3

SMILES Code: COP(OC)(Oc1ccc([N+]([O-])=O)cc1)=S

Technical Data

Solid powder

>98% (or refer to the Certificate of Analysis)

Shipping Condition:
Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.

Storage Condition:
Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).

Soluble in DMSO

Shelf Life:
>2 years if stored properly

Drug Formulation:
This drug may be formulated in DMSO

Stock Solution Storage:
0 - 4 C for short term (days to weeks), or -20 C for long term (months).

HS Tariff Code:


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