己烷的同分异构体有:CH3(CH2)4CH3;CH3CH2CH2CH(CH3)2;CH3CH2CH(CH3)CH2CH3;CH3CH2C(CH3)3;CH3CH(CH3)CH(CH3)CH3.
若为CH3(CH2)4CH3,饱和一元醇有:CH3CH2CH2CH2CH2CH2OH(符合条件);CH3CH2CH2CH2CHOHCH3;CH3CH2CH2CHOHCH2CH3;
若为CH3CH2CH2CH(CH3)2,饱和一元醇有:HOCH2CH2CH2CH(CH3)2(符合条件);CH3CHOHCH2CH(CH3)2;CH3CH2CHOHCH(CH3)2;CH2OHCH(CH3)CH2CH3(符合条件);
若为CH3CH2CH(CH3)CH2CH3,饱和一元醇有:HOCH2CH2CH(CH3)CH2CH3(符合条件);CH3CHOHCH(CH3)CH2CH3;CH3CH2CH(CH2OH)CH2CH3(符合条件);
若为CH3CH2C(CH3)3,饱和一元醇有:HOCH2CH2C(CH3)3(符合条件);CH3CHOHC(CH3)3;
若为CH3CH(CH3)CH(CH3)CH3,饱和一元醇有:CH2OHCH(CH3)CH(CH3)CH3(符合条件);CH3COH(CH3)CH(CH3)CH3;CH3CH(CH2OH)CH(CH3)CH3(符合条件).
故符合条件有8种.
故选C.