Molecular structure of Thymolphthalein Complexone (CAS NO.1913-93-5) is:

Product Name: Thymolphthalein Complexone
CAS Registry Number: 1913-93-5
IUPAC Name: 2-[[5-[1-[3-[[bis(carboxymethyl)amino]methyl]-4-hydroxy-2-methyl-5-propan-2-ylphenyl]-3-oxo-2-benzofuran-1-yl]-2-hydroxy-6-methyl-3-propan-2-ylphenyl]methyl-(carboxymethyl)amino]acetic acid
Molecular Weight: 720.76216 [g/mol]
Molecular Formula: C₃₈H₄₄N₂O₁₂
XLogP3-AA: 0.3
H-Bond Donor: 6
H-Bond Acceptor: 14
Melting Point: 191 °C 
Index of Refraction: 1.65
Molar Refractivity: 147.05 cm³
Molar Volume: 402.9 cm³ 
Surface Tension: 67.4 dyne/cm
Density: 1.359 g/cm³
Flash Point: 450.8 °C
Enthalpy of Vaporization: 125.21 kJ/mol
Boiling Point: 821.8 °C at 760 mmHg
Vapour Pressure: 1.4E-28 mmHg at 25°C
EINECS: 217-627-2
Product Categories: Analytical Chemistry;Chelating Reagents;Complexones;Photometric Reagents (Complexone)

 Thymolphthalein Complexone (CAS NO.1913-93-5) can be used as a Ph indicator.

Safty information about Thymolphthalein Complexone (CAS NO.1913-93-5) is:
Safety Statements: 24/25 
S24/25:Avoid contact with skin and eyes.
HS Code: 32041900

 Thymolphthalein Complexone , its cas register number is 1913-93-5. It also can be called N,N'-((3-Oxo-1(3H)-isobenzofuranylidene)bis((6-hydroxy-2-methyl-5-(1-methylethyl)-3,1-phenylene)methylene))bis(N-(carboxymethyl)glycine) ; TPC .It is a beige to grey-brown crystalline solid.