1-(Chloromethyl)-4-fluoro-1,4-diazoniabicyclo[2.2.2]octane bis(tetrafluoroborate)

Catalogue Number PC3728K

Synonym(s): Selectfluor

CAS Number


Commodity Code


MDL Number


Delivery of this item to mainland UK is £40, additional charge will be added at order confirmation stage by our sales team. Electrophilic fluorinating agent. Ask for technical literature(SelectfluorR - Registered trademark of Air Products). Decomposes exothermally at >1000C
CAS: 140681-55-6 | PC3728K | 1-(Chloromethyl)-4-fluoro-1,4-diazoniabicyclo[2.2.2]octane bis(tetrafluoroborate)

1-(Chloromethyl)-4-fluoro-1,4-diazoniabicyclo[2.2.2]octane bis(tetrafluoroborate) (Cas Number: 18162-48-6), is often known by the name Selectfluor.

This versatile fluorinating agent is supplied by Apollo Scientific to customers in the UK and across the Globe.

1-Chloromethyl-4-fluoro-1,4-diazoniabicyclo[2.2.2]octane bis(tetrafluoroborate) is used as a reagent for electrophilic fluorination and also acts as a selective oxidizing agent. It is an effective and versatile source of electrophilic fluorine and also used in the synthesis of organofluorine.

Selectfluor is used for greener fluorination of acetoacetamides in PEG-400. It is also a reagent that effects oxidative ring opening of 2,5-diarylfurans to cis-1,4-enediones, for fluorination of silyl ketene acetals leading to the formation of α-fluoro-α-arylcarboxylic acids.

Apollo Scientific are a leading UK chemical distributor with a global reach. With over 25,000 compounds as potential precursors in stock, and with more than 3,000 diverse compounds created in our UK labs, you can trust Apollo to deliver the solution you need.

We have stock locations in both the UK and USA, so please get in touch if you would like to learn more about how to buy Selectfluor.

Formula Weight
354.26 g/mol
Melting Point
260 °C
Chemical Hazard
Hazard Statements
H252: Self-heating in large quantities; may catch fire.
H302: Harmful if swallowed.
H317: May cause an allergic skin reaction.
H318: Causes serious eye damage.
Precautionary Statements
P210: Keep away from heat: hazard.P210: Keep away from heat
hot surfaces: hazard. hot surfaces
sparks: hazard. sparks
open flames and other ignition sources. No smoking. P280: Wear <protective gloves/protective clothing/eye protection/face protection>.: hazard. open flames and other ignition sources. No smoking. P280: Wear <protective gloves/protective clothing/eye protection/face protection>.

25g £19.00

Stock Location
In Stock

100g £70.00

Stock Location
In Stock

250g £139.00

Stock Location
In Stock
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