Is “Phenolphthalein” a Scrabble word?
Yes
PHENOLPHTHALEIN
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Phenolphthalein
/fiːnɒlˈfθeɪliːn/
noun
1.A quinone derivative used as a pH indicator, and once used as a laxative