Following is the structure of L-Histidine,N-[(1,1-dimethylethoxy)carbonyl]-1-[(4-methylphenyl)sulfonyl]- (CAS NO.35899-43-5):
                             
Empirical Formula: C₁₈H₂₃N₃O₆S
Molecular Weight: 409.46 
Index of Refraction: 1.594
Molar Refractivity: 103.95 cm³
Molar Volume: 305.9 cm³ 
Density: 1.33 g/cm³ 
Storage temp.: −20°C 
Melting point: ~125 °C (dec.)
Surface Tension of L-Histidine,N-[(1,1-dimethylethoxy)carbonyl]-1-[(4-methylphenyl)sulfonyl]- (CAS NO.35899-43-5): 50.4 dyne/cm
Product Categories of L-Histidine,N-[(1,1-dimethylethoxy)carbonyl]-1-[(4-methylphenyl)sulfonyl]- (CAS NO.35899-43-5): chiral; Amino Acid Derivatives; Amino Acids; Histidine [His, H]; Boc-Amino Acids and Derivative; Amino Acids (N-Protected); Biochemistry; Boc-Amino Acids; Boc-Amino acid series
SMILES: Cc1ccc(cc1)S(=O)(=O)n2cc(nc2)CC(C(=O)O)NC(=O)OC(C)(C)C
InChI: InChI=1/C18H23N3O6S/c1-12-5-7-14(8-6-12)28(25,26)21-10-13(19-11-21)9-15(16(22)23)20-17(24)27-18(2,3)4/h5-8,10-11,15H,9H2,1-4H3,(H,20,24)(H,22,23)/t15-/m1/s1
InChIKey: DCLJSEPKYJSEHW-OAHLLOKOBR

WGK Germany: 3

 L-Histidine,N-[(1,1-dimethylethoxy)carbonyl]-1-[(4-methylphenyl)sulfonyl]- , its cas register number 35899-43-5. It also can be called  Boc-L-Histidine(Tosyl) ; and N-tert-Butoxycarbonyl-N(imidazole)-(4-toluenesulfonyl)-L-histidine; Boc-His(Tos)-OH .