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Diphenyl phosphorofluoridate (DFP) is a highly toxic organophosphorus compound with the chemical formula (C6H5)2P(O)F. It is an oily, colorless liquid that is insoluble in water but soluble in organic solvents. DFP is a potent inhibitor of the enzyme acetylcholinesterase, which plays a crucial role in the nervous system by breaking down the neurotransmitter acetylcholine. By inhibiting this enzyme, DFP leads to an accumulation of acetylcholine, causing overstimulation of the nervous system and potentially leading to severe health effects or death. It was historically used as a chemical warfare agent and is still employed as a pesticide in some countries. Due to its high toxicity and potential for misuse, DFP is strictly regulated and its production and use are limited.

403-65-6

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403-65-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 403-65-6 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 4,0 and 3 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 403-65:
(5*4)+(4*0)+(3*3)+(2*6)+(1*5)=46
46 % 10 = 6
So 403-65-6 is a valid CAS Registry Number.

403-65-6SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 19, 2017

Revision Date: Aug 19, 2017

1.Identification

1.1 GHS Product identifier

Product name [fluoro(phenoxy)phosphoryl]oxybenzene

1.2 Other means of identification

Product number -
Other names Fluorophosphorsaeure-diphenylester

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:403-65-6 SDS

403-65-6Downstream Products

403-65-6Relevant academic research and scientific papers

Reaction of p-Nitrophenyl Diphenyl Phosphate in Cetyltrimethylammonium Fluoride. Apparent Failure of the Pseudophase Model for Kinetics

Bunton, Clifford A.,Frankson, Jane,Romsted, Laurence S.

, p. 2607 - 2611 (1980)

The reaction of F- with p-nitrophenyl diphenyl phosphate (pNPDPP) is very rapid in aqueous solutions of cetyltrimethylammonium fluoride (CTAF).However, the results do not conform to the pseudophase ion-exchange model because the rate constant does not become constant when the substrate is fully micellar bound, but continues to increase with increasing or with addition of NaF.Added Br- as NaBr or CTABr inhibits reaction showing that Br- displaces F- from the micelle.Reasons for the apparent failure of the pseudophase model are considered.

Fluorination of Trimethylsilyl Phosphites and Their Structural Analogues by Sulphuryl Chloride Fluoride. A Facile Preparation of Phosphorofluoridates and Related Compounds

Dabkowski, W.,Michalski, J.

, p. 755 - 756 (1987)

Trimethylsilyl esters of general formula RR'POSiMe3 react in a quantitative and fully chemoselective way with sulphuryl chloride fluoride to give phosphorofluoridates RR'P(O)F of high purity under extremely mild conditions.

Preparation method of phosphoryl fluoride compound

-

Paragraph 0166-0170, (2021/11/03)

The invention discloses a preparation method of a phosphoryl fluoride compound. The invention uses the phosphorus reagent under the protection of inert gas. Sodium fluoride is used as a starting raw material, and trifluoroacetic anhydride and dimethyl sul

Electrophilic Fluorination of Secondary Phosphine Oxides and Its Application to P-O Bond Construction

Chen, Qian,Zeng, Jiekun,Yan, Xinxing,Huang, Yulin,Wen, Chunxiao,Liu, Xingguo,Zhang, Kun

, p. 10043 - 10048 (2016/11/02)

A novel and efficient electrophilic fluorination of secondary phosphine oxides with Selectfluor has been achieved. This transformation provides direct access to phosphoric fluorides in up to 92% yield under mild conditions. In addition, P-O bond construction via a one-pot coupling process of secondary phosphine oxides with water or alcohols in the presence of Selectfluor leads to the formation of phosphinic acids or phosphinates in up to 96% yield.

Dichlorodimethylhydantoin-KF as an efficient reagent for one pot synthesis of dialkylfluorophosphates from dialkylphosphites

Gupta,Acharya,Dubey,Kaushik

, p. 226 - 229 (2008/09/16)

Organic-inorganic hybrid reagent dichlorodimethylhydantoin-KF (DCDMH-KF) mixture was explored as an efficient reagent for the direct conversion of dialkylphosphites to their corresponding dialkylfluorophosphates at room temperature and in shorter reaction times through a facile electrophilic-nucleophilic metathesis.

Single step fluorination of dialkylphosphites: trichloroacetonitrile-KF as an efficient reagent for the synthesis of dialkyl fluorophosphates

Gupta,Acharya,Pardasani,Dubey

, p. 2232 - 2235 (2008/09/19)

The use of trichloroacetonitrile and KF mixture is described as an efficient reagent for the direct conversion of dialkylphosphites to their corresponding dialkyl fluorophosphates via in situ formation of dialkyl chlorophosphates in one-pot.

Trichloroisocyanuric acid-KF as an efficient reagent for one-pot synthesis of dialkylfluorophosphates from dialkylphosphites

Acharya,Gupta,Pardasani, Deepak,Dubey,Kaushik

, p. 3760 - 3765 (2008/12/23)

Trichloroisocyanuric acid-KF afforded dialkylfluorophosphates from dialkylphosphites at room temperature through a facile electrophilic- nucleophilic metathesis. Copyright Taylor & Francis Group, LLC.

α-haloenamines as reagents for the conversion of phosphorus oxyacids to their halogenated analogues

Norlin, Rikard,Juhlin, Lars,Lind, Per,Trogen, Lars

, p. 1765 - 1770 (2007/10/03)

Phosphorus oxyacids are converted to their halogenated analogues under mild conditions. α-Haloenamines are shown to be effective halogen transfer reagents affording good to high yields of the desired products at reaction times, in some cases, less than one minute. Georg Thieme Verlag Stuttgart.

Rapid and efficient solid-supported reagent synthesis of fluorine derivatives of phosphorus(V) compounds

Sierakowski, Timothy,Kiddle, James J.

, p. 2215 - 2217 (2007/10/03)

Direct conversion of phosphorus(V) chlorides to the corresponding phosphorus(V) fluorides was achieved utilizing a solid-supported reagent. The phosphorus(V) fluorides were straightforwardly synthesized and efficiently isolated in very good yields.

Fluorination of organochlorophosphorus compounds with alkali metal salts of perfluorinated complex anions. Part 2

Farooq, Omar

, p. 81 - 84 (2007/10/03)

Alkali metal salts of perfluorinated complex anions were used to fluorinate a few selected organochlorophosphorus compounds in the presence and absence of a multifunctional etheral solvent. Together with oxidative products, low to moderate yields of the desired monofluorinated products were obtained.

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