Keyword Analysis & Research: when was fentanyl first discovered

Keyword Analysis

Keyword	CPC	PCC	Volume	Score	Length of keyword
when was fentanyl first discovered	1.95	0.5	5825	23	34
when	1.15	0.5	1124	58	4
was	1.82	0.5	9242	43	3
fentanyl	0.07	0.1	551	61	8
first	0.53	0.2	3680	98	5
discovered	1.55	0.3	7331	22	10

Keyword	CPC	PCC	Volume	Score
when was fentanyl first discovered	1.63	0.7	8548	7