1,3-Cyclopentadiene,methyl- (CAS NO.26519-91-5) is also called as Methylcyclopentadiene Methyl-1,3-cyclopentadiene ; Methylcyclopentadiene ; Monomethylcyclopentadiene ; Cyclopentadiene, methyl- (6CI,7CI) ; Methylcyclopenta-1,3-diene .