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Phenol Red Biological Stains C19H14O5S Formula PR CAS 143-74-8

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Phenol Red Biological Stains C19H14O5S Formula PR CAS 143-74-8

Phenol Red Biological Stains C19H14O5S Formula PR CAS 143-74-8
Phenol Red Biological Stains C19H14O5S Formula PR CAS 143-74-8

Large Image :  Phenol Red Biological Stains C19H14O5S Formula PR CAS 143-74-8

Product Details:
Place of Origin: China
Brand Name: YunbangPharm
Certification: ISO9001
Model Number: YB095
Payment & Shipping Terms:
Minimum Order Quantity: Negotiable
Price: Negotiable
Packaging Details: 100g,200g,1kg/Bottle, 5-25kg/Drum
Delivery Time: 3-7 working days
Payment Terms: L/C, D/A, D/P, T/T, Western Union
Supply Ability: 100kg

Phenol Red Biological Stains C19H14O5S Formula PR CAS 143-74-8

CAS NO.: 143-74-8 Formula: C19H14O5S
Appearance: Dark Red Powder Purity: 95%
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Phenol Red Biological Stains


C19H14O5S Biological Stains


CAS 143-74-8





Phenol Red Basic information
Product Name: Phenol Red
CAS: 143-74-8
MF: C19H14O5S
MW: 354.38
EINECS: 205-609-7
Product Categories: Stains and Dyes;P;Stains&Dyes, A to;General Stains/Dyes for Stem Cell BiologyStains and Dyes;PReagents and Supplements;Cell Culture;Analytical Chemistry;Indicator (pH);pH Indicators;Cell Viability and Proliferation;In Vivo/In Vitro Tracking of Stem CellsStem Cell Biology;Stains, Dyes and Indicators;Stem Cell Biology;Stem Cell Characterization;Sulfonephthalein
Phenol Red Structure
Phenol Red Chemical Properties
Melting point >300 °C
Boiling point >300°C
density 1.445 Mg m-3
refractive index 1.5300 (estimate)
Fp >300°C
storage temp. no restrictions.
solubility 1 M NaOH: soluble1mg/mL
form Solid
pka 7.9(at 25℃)
color Red
PH Range 6.6(YELLOW)-8.0(RED)
PH 6.8~8.4
Odor Odorless
Water Solubility 0.77 g/L
λmax 557nm, 558nm, 360nm, 423nm, 433nm
Merck 14,7247
BRN 326470
Major Application Display device, sol-gel matrix, photoreceptors, fuel cells, waveguides, paints, detergents, cosmetics, antiperspirant composition, diapers, screening bacteria, detecting viable cells, diagnosis of urogenital ureaplasmosis, treatment of pathogen infections, amyloid-associated diseases, glaucoma, pulmonary hypertension, asthma, chronic obstructive pulmonary disease, erectile dysfunction, Raynaud’s syndrome, heparin overdose, vulvodynia, wound healing, psychoactive drugs, evaluating dental caries activity
Phenol Red Usage And Synthesis
Chemical Properties dark red powder
Uses As indicator in 0.02-0.05% alcohol solution. pH 6.8 yellow, 8.4 red.
Uses Phenol red is used as a non absorbed marker in gravimetric method. It is a pH indicator used in cell biology laboratories and in home swimming pool test kits. It is used to check the kidney function based on the excreted phenol red by colorimetric method.
Definition ChEBI: 3H-2,1-Benzoxathiole 1,1-dioxide in which both of the hydrogens at position 3 have been substituted by 4-hydroxyphenyl groups. A pH indicator changing colour from yellow below pH 6.8 to bright pink above pH 8.2, it is commonly used as an indicator in cell cultures and in home swimming pool test kits. It is also used in the (now infrequently performed) phenolsulfonphthalein (PSP) test for estimation of overall blood flow through the kidney.
Biochem/physiol Actions Phenol Red is a pH indicator which changes color from yellow to red.
Safety Profile Moderately toxic by ingestion and intravenous routes. Mutation data reported. When heated to decomposition it emits toxicvapors of SOx.
Enzyme inhibitor This pH-indicating dye (FW = 354.38 g/mol; CAS 143-74-8; pKa = 7.9; yellow < pH 6.8; red > pH 8.4), also known as phenolsulfonphthalein and sulfophthalein, is a diagnostic aid for evaluating renal function. A typical stock indicator solution is 0.1 g phenol red in 28.2 mL 10 mM NaOH and 221.8 mL water. Target(s): aldehyde reductase; glutaminase; gglutamyl transpeptidase; glutathione S-transferase; 4- methyleneglutaminase; phosphate uptake; thromboxane A2/prostaglandin H2 receptor; and thyroglobulin iodination.

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