bromophenol blue vs bromphenol blue

bromophenol blue and bromphenol blue both are nouns.

Word	Noun	Adjective	Verb	Adverb
bromophenol blue	Yes	No	No	No
bromphenol blue	Yes	No	No	No

As nouns, bromophenol blue and bromphenol blue are synonyms defined as:

bromophenol blue and bromphenol blue: a dye used as an acid-base indicator, with useful range between pH 3.0 and 4.6

Other synonyms of bromophenol blue include tetrabromo-phenolsulfonephthalein.

bromophenol blue (noun)	bromphenol blue (noun)
a dye used as an acid-base indicator, with useful range between pH 3.0 and 4.6	a dye used as an acid-base indicator, with useful range between pH 3.0 and 4.6