filter4dフェノールレッド liquid, 0.5%, sterile-filtered, BioReagent, suitable for cell culture; CAS Number: 143-74-8; Synonyms: Phenolsulfonphthalein solution at Sma-AldrichWe carry 3D printing activated carbon, air filters, fume extractors, gloves, and more. Thank you for supporting our small business!