Hexynoyl chloride, also known as 6-hexynoyl chloride or hex-5-ynoic acid chloride, is a chemical compound with the molecular formula C6H7ClO. It is a colorless liquid that is soluble in organic solvents and has a pungent odor. Hexynoyl chloride is an important intermediate in the synthesis of various pharmaceuticals, agrochemicals, and other specialty chemicals. It is produced by the reaction of 6-hexyn-1-ol with thionyl chloride or phosphorus pentachloride. Due to its reactivity, hexynoyl chloride is commonly used in the formation of amides, esters, and other derivatives through nucleophilic substitution reactions. It is also known for its ability to undergo [2+2] cycloaddition reactions, making it a valuable building block in organic synthesis.
The CAS Registry Mumber 7299-57-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 7,2,9 and 9 respectively; the second part has 2 digits, 5 and 7 respectively. Calculate Digit Verification of CAS Registry Number 7299-57: (6*7)+(5*2)+(4*9)+(3*9)+(2*5)+(1*7)=132 132 % 10 = 2 So 7299-57-2 is a valid CAS Registry Number.