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O-Methyl-O-(4-nitrophenyl)-O-ethyl-thiophosphate, also known as OMNP, is an organophosphorus compound that serves as a chemical warfare agent. It is a toxic substance with the chemical formula C9H11NO6PS. OMNP is a colorless, oily liquid that is soluble in organic solvents and has a pungent odor. It is a potent inhibitor of the enzyme acetylcholinesterase, which leads to the accumulation of acetylcholine in the nervous system, causing overstimulation and potentially fatal effects. OMNP is considered a highly dangerous substance due to its high toxicity, and exposure can result in severe health issues, including respiratory failure, seizures, and death. It is important to handle OMNP with extreme caution and to follow proper safety protocols to minimize the risk of exposure.

2591-57-3

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2591-57-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 2591-57-3 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,5,9 and 1 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 2591-57:
(6*2)+(5*5)+(4*9)+(3*1)+(2*5)+(1*7)=93
93 % 10 = 3
So 2591-57-3 is a valid CAS Registry Number.
InChI:InChI=1/C9H12NO5PS/c1-3-14-16(17,13-2)15-9-6-4-8(5-7-9)10(11)12/h4-7H,3H2,1-2H3

2591-57-3SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 15, 2017

Revision Date: Aug 15, 2017

1.Identification

1.1 GHS Product identifier

Product name ethoxy-methoxy-(4-nitrophenoxy)-sulfanylidene-λ<sup>5</sup>-phosphane

1.2 Other means of identification

Product number -
Other names O-Ethyl-O-methyl-O-p-nitrofenylester kyseliny thiofosforecne [Czech]

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:2591-57-3 SDS

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