WARNING: This product is for research use only, not for human or veterinary use.
MedKoo CAT#: 464075
CAS#: 76-61-9
Description: Thymol blue (thymolsulfonephthalein) is a brownish-green or reddish-brown crystalline powder that is used as a pH indicator. It is insoluble in water but soluble in alcohol and dilute alkali solutions. It transitions from red to yellow at pH 1.2–2.8 and from yellow to blue at pH 8.0–9.6. It is usually a component of Universal indicator. At wavelength (378 - 382) nm, extinction coefficient > 8000 and at wavelength (298 - 302) nm , the extinction coefficient > 12000.
MedKoo Cat#: 464075
Name: Thymol blue
CAS#: 76-61-9
Chemical Formula: C27H30O5S
Exact Mass: 466.1814
Molecular Weight: 466.592
Elemental Analysis: C, 69.50; H, 6.48; O, 17.14; S, 6.87
Synonym: Thymol blue; NSC 11238; NSC11238; NSC-11238; Thymolsulfonephthalein;
IUPAC/Chemical Name: 3,3-bis(4-hydroxy-5-isopropyl-2-methylphenyl)-3H-benzo[c][1,2]oxathiole 1,1-dioxide
InChi Key: PRZSXZWFJHEZBJ-UHFFFAOYSA-N
InChi Code: InChI=1S/C27H30O5S/c1-15(2)19-13-22(17(5)11-24(19)28)27(21-9-7-8-10-26(21)33(30,31)32-27)23-14-20(16(3)4)25(29)12-18(23)6/h7-16,28-29H,1-6H3
SMILES Code: CC(c1c(O)cc(C)c(C2(c3c(C)cc(O)c(C(C)C)c3)OS(=O)(c4c2cccc4)=O)c1)C
Appearance: Solid powder
Purity: >98% (or refer to the Certificate of Analysis)
Shipping Condition: Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.
Storage Condition: Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).
Solubility: Soluble in DMSO
Shelf Life: >2 years if stored properly
Drug Formulation: This drug may be formulated in DMSO
Stock Solution Storage: 0 - 4 C for short term (days to weeks), or -20 C for long term (months).
HS Tariff Code: 2934.99.9001
The following data is based on the product molecular weight 466.592 Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.
| Concentration / Solvent Volume / Mass | 1 mg | 5 mg | 10 mg |
|---|---|---|---|
| 1 mM | 1.15 mL | 5.76 mL | 11.51 mL |
| 5 mM | 0.23 mL | 1.15 mL | 2.3 mL |
| 10 mM | 0.12 mL | 0.58 mL | 1.15 mL |
| 50 mM | 0.02 mL | 0.12 mL | 0.23 mL |
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