The CAS registry number of D-Cysteine is 921-01-7. Its EINECS registry number is 213-062-0. In addition, the molecular formula is C₃H₇NO₂S and the molecular weight is 121.16. The IUPAC name is (2S)-2-amino-3-sulfanylpropanoic acid. What's more, it is a kind of white crystalline powder and should be stored in a cool and dry place.

Physical properties about D-Cysteine are: (1)ACD/LogP: 0.09; (2)ACD/BCF (pH 5.5): 1; (3)ACD/BCF (pH 7.4): 1; (4)ACD/KOC (pH 5.5): 1; (5)ACD/KOC (pH 7.4): 1; (6)#H bond acceptors: 3; (7)#H bond donors: 3; (8)#Freely Rotating Bonds: 4; (9)Polar Surface Area: 102.12 Å²; (10)Index of Refraction: 1.55; (11)Molar Refractivity: 28.902 cm³; (12)Molar Volume: 90.783 cm³; (13)Polarizability: 11.458 ×10^-24cm³; (14)Surface Tension: 58.975 dyne/cm; (15)Density: 1.335 g/cm³; (16)Flash Point: 131.536 °C; (17)Enthalpy of Vaporization: 58.69 kJ/mol; (18)Boiling Point: 293.883 °C at 760 mmHg.

When you are using this chemical, please be cautious about it as the following:
This chemical is harmful by inhalation, in contact with skin and if swallowed. It is irritating to eyes, respiratory system and skin. In case of contact with eyes, you should rinse immediately with plenty of water and seek medical advice. Whenever you will contact it, please wear suitable protective clothing, gloves and eye/face protection.

You can still convert the following datas into molecular structure:
(1)SMILES: C([C@H](C(=O)O)N)S
(2)Std.InChI: InChI=1S/C3H7NO2S/c4-2(1-7)3(5)6/h2,7H,1,4H2,(H,5,6)/t2-/m1/s1
(3)Std.InChIKey: XUJNEKJLAYXESH-UWTATZPHSA-N