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34487-61-1

34487-61-1 structure
34487-61-1 structure
  • Name: Phenol Red sodium salt
  • Chemical Name: sodium,4-[3-(4-hydroxyphenyl)-1,1-dioxo-2,1λ6-benzoxathiol-3-yl]phenolate
  • CAS Number: 34487-61-1
  • Molecular Formula: C19H13NaO5S
  • Molecular Weight: 375.351
  • Catalog: Biochemical Biochemical reagent Biological dye
  • Create Date: 2018-02-13 08:00:00
  • Modify Date: 2025-08-24 00:24:14
  • Phenol Red sodium salt is a water soluble pH indicator used in the 6.8 (yellow) to 8.2 (red) range.
Name sodium,4-[3-(4-hydroxyphenyl)-1,1-dioxo-2,1λ6-benzoxathiol-3-yl]phenolate
Synonyms Phenolsulfonephthalein sodium salt
Phenol Red,sodium salt
PR sodium salt
phenolsulfonphthalein sodium salt
phenolsulphophthaleine sodium salt
UNII-50J9732WBG
MFCD00066901
Phenol, 4,4'-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis-, monosodium salt
EINECS 252-057-8
phenolsulfonephthalein sodium
Sodium 4-(3-(4-hydroxyphenyl)-1,1-dioxido-3H-benzo[c][1,2]oxathiol-3-yl)phenolate
Phenolate, 4,4'-(1,1-dioxido-3H-2,1-benzoxathiol-3-ylidene)bis-, sodium salt (1:1)
phenol red sodium salt
PHENOL RED,ACS
Sodium Phenol Red
sodium hydrogen 4,4'-(3H-2,1-benzoxathiol-3-ylidene)bisphenolate S,S-dioxide
Phenol Red (sodium salt)
Description Phenol Red sodium salt is a water soluble pH indicator used in the 6.8 (yellow) to 8.2 (red) range.
Related Catalog
In Vitro Phenol Red sodium salt is commonly employed as a cell tissue culture pH marker. Under normal conditions, phenol red added to the growth medium will have a pink-red color. Dying cells or overgrowth of contaminants will cause a change in pH resulting in a change in indicator color. Phenol red bears a structural resemblance to some nonsteroidal estrogens and has significant estrogenic activity at the concentrations (15-45 μM) at which it is found in tissue culture media. Phenol red binds to the estrogen receptor of MCF-7 human breast cancer cells and stimulates the proliferation of estrogen receptor-positive MCF-7 breast cancer cells in a dose-dependent manner but has no effect on the growth of estrogen receptor-negative MDA-MB-231 breast cancer cells[1]. Phenol red is a simple, rapid and inexpensive method for the measurement of hydrogen peroxide produced by cells in culture. The assay is based on the horseradish peroxidase-mediated oxidation of phenol red by hydrogen peroxide which results in the formation of a compound demonstrating increased absorbance at 610 nm[2].
Cell Assay Phenol red is dissolved in 0.1% ethanol. To determine the effect of phenol red on cell proliferation, MCF-7 cells grown for 1 week before experiments in phenol red-free MEM supplemented are harvested and seeded into T-25 flasks (ca. 1.5 x 105 cells per flask). The following day, cells from three flasks are harvested and counted with a Coulter Counter. Then the medium is changed to phenol red- and insulin-free MEM, which contains various concentrations of dextran-coated charcoal-treated calf serum, phenol red (0-300 μM), tamoxifen, hydroxytamoxifen, estradiol, or ethanol vehicle (0.1%), and cell number is monitored as a function of time[1]. Phenol Red sodium salt is dissolved in distilled water as a 10 g/L stock solution[2].
References

[1]. Berthois Y, et al. Phenol red in tissue culture media is a weak estrogen: implications concerning the study of estrogen-responsive cells in culture. Proc Natl Acad Sci U S A. 1986 Apr;83(8):2496-500.

[2]. Pick E, et al. A simple colorimetric method for the measurement of hydrogen peroxide produced by cells in culture. J Immunol Methods. 1980;38(1-2):161-70.
Density 0.972
Boiling Point 562.8ºC at 760mmHg
Melting Point 285 °C (dec.)(lit.)
Molecular Formula C19H13NaO5S
Molecular Weight 375.351
Flash Point 294.2ºC
Exact Mass 375.030853
PSA 95.04000
LogP 4.62760
Storage condition Store at RT.
Stability Stable. Incompatible with strong oxidizing agents.
Water Solubility soluble
Symbol GHS07
GHS07
Signal Word Warning
Hazard Statements H315-H319-H335
Precautionary Statements P261-P305 + P351 + P338
Personal Protective Equipment dust mask type N95 (US);Eyeshields;Gloves
Hazard Codes Xi:Irritant;
Risk Phrases R36/37/38
Safety Phrases S26-S36-S37/39
RIDADR NONH for all modes of transport
WGK Germany 3
HS Code 29349990
Precursor  0

DownStream  1

HS Code 29349990
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