IUPAC Name: 2-[(2-Methylpropan-2-yl)oxycarbonylamino]-3-tritylsulfanylpropanoic acid 
Following is the structure of N-Boc-S-Trityl-L-cysteine (CAS NO.21947-98-8):
                             
Empirical Formula: C₂₇H₂₉NO₄S
Molecular Weight: 463.5885
EINECS: 244-674-6
Index of Refraction: 1.596
Molar Refractivity: 131.45 cm³
Molar Volume: 386.1 cm³
 Density: 1.2 g/cm³
Flash Point: 323.3 °C
Storage temp.: 2-8 °C
Melting point 143-146 °C
Surface Tension: 48.7 dyne/cm
Enthalpy of Vaporization: 95.38 kJ/mol
Boiling Point: 610.9 °C at 760 mmHg
Vapour Pressure: 8.85E-16 mmHg at 25 °C
Appearance of N-Boc-S-Trityl-L-cysteine (CAS NO.21947-98-8): White to yellow crystalline powder
Product Categories of N-Boc-S-Trityl-L-cysteine (CAS NO.21947-98-8): Amino Acid Derivatives; Amino Acids; Cysteine [Cys, C]; Boc-Amino Acids and Derivative; Boc-Amino acid series
Canonical SMILES: CC(C)(C)OC(=O)NC(CSC(C1=CC=CC=C1)(C2=CC=CC=C2)C3=CC=CC=C3)C(=O)O
InChI: InChI=1S/C27H29NO4S/c1-26(2,3)32-25(31)28-23(24(29)30)19-33-27(20-13-7-4-8-14-20,21-15-9-5-10-16-21)22-17-11-6-12-18-22/h4-18,23H,19H2,1-3H3,(H,28,31)(H,29,30)
InChIKey: JDTOWOURWBDELG-UHFFFAOYSA-N

Safety Statements: 22-24/25 
S22:Do not breathe dust. 
S24/25:Avoid contact with skin and eyes.
WGK Germany: 3
F: 3-10

 N-Boc-S-Trityl-L-cysteine , its cas register number 21947-98-8. It also can be called N-(tert-Butoxycarbonyl)-S-trityl-L-cysteine ; and L-cysteine, N-[(1,1-dimethylethoxy)carbonyl]-S-(triphenylmethyl)- .