The L-Cysteine, 2-methyl-,hydrochloride (1:1), with the CAS registry number 148766-37-4, is also known as L-2-Methylcysteine hydrochloride. This chemical's molecular formula is C₄H₁₀ClNO₂S and molecular weight is 171.6457. Its systematic name is called (2R)-2-amino-2-methyl-3-sulfanyl-propanoic acid hydrochloride.

Physical properties of L-Cysteine, 2-methyl-,hydrochloride (1:1): (1)ACD/LogP: 0.59; (2)#H bond acceptors: 3; (3)#H bond donors: 3; (4)#Freely Rotating Bonds: 4; (5)Flash Point: 128.6 °C; (6)Enthalpy of Vaporization: 58.12 kJ/mol; (7)Boiling Point: 289 °C at 760 mmHg; (8)Vapour Pressure: 0.000571 mmHg at 25°C.

You can still convert the following datas into molecular structure:
(1)SMILES: CC(CS)(C(=O)O)N.Cl
(2)InChI: InChI=1/C4H9NO2S.ClH/c1-4(5,2-8)3(6)7;/h8H,2,5H2,1H3,(H,6,7);1H/t4-;/m0./s1
(3)InChIKey: MAGCVRLGTQSVGF-WCCKRBBIBJ