The L-Cystine,hydrochloride (1:2), with the CAS registry number 30925-07-6 and EINECS registry number 250-391-9, has the systematic name of L-cystine dihydrochloride. And the molecular formula of the chemical is C₆H₁₄Cl₂N₂O₄S₂.

The characteristics of L-Cystine,hydrochloride (1:2) are as followings: (1)ACD/LogP: 1.23; (2)# of Rule of 5 Violations: 1; (3)#H bond acceptors: 6; (4)#H bond donors: 6; (5)#Freely Rotating Bonds: 9; (6)Polar Surface Area: 177.24 Å²; (7)Flash Point: 259.5 °C; (8)Enthalpy of Vaporization: 84.85 kJ/mol; (9)Boiling Point: 505.5 °C at 760 mmHg; (10)Vapour Pressure: 1.38E-11 mmHg at 25°C.

You should be cautious while dealing with this chemical. It irritates to eyes, respiratory system and skin. Therefore, you had better take the following instructions: Wear suitable protective clothing, and if in case of contacting with eyes, rinse immediately with plenty of water and seek medical advice.

Addtionally, the following datas could be converted into the molecular structure:
(1)SMILES: Cl.Cl.N[C@@H](CSSC[C@H](N)C(O)=O)C(O)=O
(2)InChI: InChI=1/C6H12N2O4S2.2ClH/c7-3(5(9)10)1-13-14-2-4(8)6(11)12;;/h3-4H,1-2,7-8H2,(H,9,10)(H,11,12);2*1H/t3-,4-;;/m0../s1
(3)InChIKey: HHGZUQPEIHGQST-RGVONZFCBP