The L-Methionine,glycylglycyl-L-phenylalanyl-, with the CAS registry number of 61370-88-5, is also known as 1-De-tyr-met-enkephalin. Its molecular formula is C₁₈H₂₆N₄O₅S and molecular weight is 410.49. What's more, its IUPAC name is (2S)-2-[[(2S)-2-[[2-[(2-Aminoacetyl)amino]acetyl]amino]-3-phenylpropanoyl]amino]-4-methylsulfanylbutanoic acid. It can Cause retrograde amnesia in rats.

Physical properties about the L-Methionine,glycylglycyl-L-phenylalanyl- are: (1)ACD/LogP: 0.75; (2)# of Rule of 5 Violations: 1; (3)ACD/LogD (pH 5.5): -1.75; (4)ACD/LogD (pH 7.4): -1.92; (5)ACD/BCF (pH 5.5): 1; (6)ACD/BCF (pH 7.4): 1; (7)ACD/KOC (pH 5.5): 1; (8)ACD/KOC (pH 7.4): 1; (9)#H bond acceptors: 9; (10)#H bond donors: 6; (11)#Freely Rotating Bonds: 13; (12)Polar Surface Area: 115.77 Å²; (13)Index of Refraction: 1.58; (14)Molar Refractivity: 106.01 cm³; (15)Molar Volume: 318.1 cm³; (16)Surface Tension: 57.7 dyne/cm; (17)Density: 1.29 g/cm³; (18)Flash Point: 466.4 °C; (19)Enthalpy of Vaporization: 129.08 kJ/mol; (20)Boiling Point: 847.6 °C at 760 mmHg; (21)Vapour Pressure: 1.52E-30 mmHg at 25 °C.

You can still convert the following datas into molecular structure:
(1) SMILES: O=C(O)[C@@H](NC(=O)[C@@H](NC(=O)CNC(=O)CN)Cc1ccccc1)CCSC
(2) InChI: InChI=1/C18H26N4O5S/c1-28-8-7-13(18(26)27)22-17(25)14(9-12-5-3-2-4-6-12)21-16(24)11-20-15(23)10-19/h2-6,13-14H,7-11,19H2,1H3,(H,20,23)(H,21,24)(H,22,25)(H,26,27)/t13-,14-/m0/s1
(3) InChIKey: KWHAJHJQOWBJEG-KBPBESRZBH