We are open as normal during COVID-19 pandemic. Order online, same day shipping out.

    WARNING: This product is for research use only, not for human or veterinary use.

MedKoo CAT#: 592071

CAS#: 298-00-0

Description: Parathion-methyl is the methyl homolog of parathion. An effective, but highly toxic, organothiophosphate insecticide and cholinesterase inhibitor.

Price and Availability

Size Price Shipping out time Quantity
100mg USD 250 2 Weeks
250mg USD 510 2 Weeks
Inquire bulk and customized quantity

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

Parathion-methyl purity > 98%, is in stock. Current shipping out time is about 2 weeks after order is received. CoA, QC data and MSDS documents are available in one week after order is received.

Chemical Structure


Theoretical Analysis

MedKoo Cat#: 592071
Name: Parathion-methyl
CAS#: 298-00-0
Chemical Formula: C8H10NO5PS
Exact Mass: 263.0017
Molecular Weight: 263.2
Elemental Analysis: C, 36.51; H, 3.83; N, 5.32; O, 30.39; P, 11.77; S, 12.18

Synonym: Parathion-methyl; NCI-C02971 NCI C02971; NCIC02971

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: S=P(OC)(OC1=CC=C([N+]([O-])=O)C=C1)OC

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:
>3 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: