The D,3-Mercaptovaline with CAS registry number of 52-67-5 is also called D-Valine, 3-mercapto-. The IUPAC name is (2S)-2-amino-3-methyl-3-sulfanylbutanoic acid. Its EINECS registry number is 200-148-8. In addition, the molecular formula is C₅H₁₁NO₂S and the molecular weight is 149.21. It is a kind of white to off-white crystalline powder and belongs to the classes of Amino Acids; Biochemistry; non-Proteinorganic Amino Acids; Miscellaneous Compounds; Antibiotics. And it is stable and incompatible with strong oxidizing agents.

Physical properties about this chemical are: (1)ACD/LogP: 0.85; (2)# of Rule of 5 Violations: 0 ; (3)ACD/BCF (pH 5.5): 1; (4)ACD/BCF (pH 7.4): 1; (5)ACD/KOC (pH 5.5): 1; (6)ACD/KOC (pH 7.4): 1; (7)#H bond acceptors: 3; (8)#H bond donors: 3; (9)#Freely Rotating Bonds: 4; (10)Polar Surface Area: 102.12 Å²; (11)Index of Refraction: 1.528; (12)Molar Refractivity: 38.134 cm³; (13)Molar Volume: 123.845 cm³; (14)Polarizability: 15.117 ×10^-24cm³; (15)Surface Tension: 48.155 dyne/cm; (16)Density: 1.205 g/cm³; (17)Flash Point: 106.068 °C; (18)Enthalpy of Vaporization: 53.854 kJ/mol; (19)Boiling Point: 251.772 °C at 760 mmHg; (20)Vapour Pressure: 0.006 mmHg at 25°C.

Preparation of D,3-Mercaptovaline: it can be prepared by penicillin through synthesis or degradation. It also can be prepared by penicillin G potassium by means of hydrolysis.

Uses of D,3-Mercaptovaline: it can be used as antidoteit of some heavy metals such as copper and mercury. And it can be used in the treatment of Wilson's disease and rheumatoid arthritis. It does not apply to the hematopoiesis function obstacle patients, kidney function decline patients and who allergic to penicillin. In addition, it can react with formic acid to get N-formyl-penicillamine. This reaction will need reagent acetic anhydride. The reaction time is 3 hours at ambient temperature. The yield is about 78%.

When you are using this chemical, please be cautious about it as the following:
This chemical is irritating to eyes, respiratory system and skin and harmful by inhalation, in contact with skin and if swallowed. The evidence of a carcinogenic effect is limited. During using it, do not breathe dust and wear suitable protective clothing. Moreover, avoid contact with skin and eyes. In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.

You can still convert the following datas into molecular structure:
(1)SMILES: CC(C)([C@H](C(=O)O)N)S
(2)InChI: InChI=1/C5H11NO2S/c1-5(2,9)3(6)4(7)8/h3,9H,6H2,1-2H3,(H,7,8)/t3-/m0/s1
(3)InChIKey: VVNCNSJFMMFHPL-VKHMYHEABH

The toxicity data is as follows: