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2-Butenoyl fluoride, also known as 2-butynoate fluoride or 2-butynoic acid fluoride, is a chemical compound with the molecular formula C4H5FO. It is a colorless liquid that is highly reactive and sensitive to moisture, making it prone to hydrolysis. 2-Butenoyl fluoride is an important building block in organic synthesis, particularly in the preparation of various pharmaceuticals, agrochemicals, and specialty chemicals. It is used as a reagent in the formation of esters, amides, and other derivatives due to its ability to act as an electrophile in nucleophilic substitution reactions. 2-Butenoyl fluoride is typically synthesized through the reaction of 2-butynoic acid with a fluorinating agent, such as diethylaminosulfur trifluoride (DAST). Due to its reactivity, it is often handled under anhydrous conditions and is stored in airtight containers to prevent unwanted reactions.

691-48-5

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691-48-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 691-48-5 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 6,9 and 1 respectively; the second part has 2 digits, 4 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 691-48:
(5*6)+(4*9)+(3*1)+(2*4)+(1*8)=85
85 % 10 = 5
So 691-48-5 is a valid CAS Registry Number.

691-48-5SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 12, 2017

Revision Date: Aug 12, 2017

1.Identification

1.1 GHS Product identifier

Product name but-2-enoyl fluoride

1.2 Other means of identification

Product number -
Other names Crotonylfluorid

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:691-48-5 SDS

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