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names of substituents I need to remember

Methyl (Me)
-CH3

Ethyl (Et)
-CH3CH2

Propyl (Pr)
-CH2CH2CH3

Butyl (Bu)
-CH2CH2CH2CH3

isopropyl (i-Pr or iPr)
-CH(CH3)2

isobutyl (i-Bu or iBu)
-CH2CH(CH3)2

sec-butyl (s-Bu or sBu)

tert-butyl (t-bu or tBu)
-C(CH3)3

neopentyl
-CH2C(CH3)3

vinyl
-CH=CH2

allyl
-CH2CH=CH2

isopropenyl

styrene
Ph-CH=CH2

isoprene