13721-54-5 Usage
Physical state
Colorless liquid
Odor
Strong, unpleasant
Industrial applications
Solvent, chemical intermediate, synthesis of organic materials, manufacturing of pharmaceuticals and agrochemicals
Chemical reactivity
Can undergo addition and substitution reactions
Safety concerns
Flammable, causes skin, eye, and respiratory irritation
Check Digit Verification of cas no
The CAS Registry Mumber 13721-54-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,7,2 and 1 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 13721-54:
(7*1)+(6*3)+(5*7)+(4*2)+(3*1)+(2*5)+(1*4)=85
85 % 10 = 5
So 13721-54-5 is a valid CAS Registry Number.
InChI:InChI=1/C6H8/c1-3-5-6-4-2/h3H,1,4H2,2H3
13721-54-5Relevant articles and documents
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Thorn,Hennion,Nieuwland
, p. 797 (1936)
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Studies on the Thermal Conversion of Long-chain Alkynes at High Temperatures in the Gas Phase
Ondruschka, B.,Zimmermann, G.,Ziegler, U.,Kopinke, F.-D.,Teuber, M.
, p. 273 - 284 (2007/10/02)
In the gas phase pyrolysis of long-chain alkynes C5 to C9 at 773 to 873 K, a remarkable portion of molecular reaction (retro-ene analogous decompositions as well as cycloisomerizations of the parent alkynes to cyclopentenes alkylated in 3-position) takes place besides the thermal conversion of the starting compounds via radical chain processes.The different products were separated by GC and the main products identified by means of different methods.The mechanisms of formation of the major products are discussed.
