Phenol Red sodium salt

34487-61-1

sodium 4-(3-(4-hydroxyphenyl)-1,1-dioxido-3H-benzo[c][1,2]oxathiol-3-yl)phenolate

Phenolsulfonephthalein sodium salt

0.98

≥49.3 mg/mL in DMSO; ≥9.56 mg/mL in EtOH with ultrasonic; ≥6.87 mg/mL in H2O with ultrasonic

OC1=CC=C(C=C1)C(O2)(C3=CC=C(O[Na])C=C3)C4=CC=CC=C4S2(=O)=O

C19H13NaO5S

376.36

Blue ice

Store at -20°C.