2776. Cystamine

Nomenclature

CAS number: 51-85-4
2,2′-Dithiobisethanamine; 2,2′-dithiobis[ethylamine]; β,β′-diaminodiethyl disulfide; bis[β-aminoethyl]disulfide; decarboxycystine.
C4H12N2S2; mol wt 152.28.
C 31.55%, H 7.94%, N 18.40%, S 42.11%.

Description and references

Forms when cystine is distilled: Neuberg, Ascher, Chem. Zentralbl. 1907, II, 1156. Prepd by H2O2 oxidation of H2NCH2CH2SH: Mills, Jr., Bogert, J. Am. Chem. Soc. 62, 1173 (1940); Barnett, J. Chem. Soc. 1944, 5.

Chemical structure

Properties

Viscous oil. Cannot be distilled without decompn (even in high vacuum). Freely sol in water. Sol in alc.

Derivative

Dihydrochloride.

Nomenclature

CAS number: 56-17-7
C4H12N2S2.2HCl; mol wt 225.20.
C 21.33%, H 6.27%, N 12.44%, S 28.48%, Cl 31.49%.

Properties

Needles from methanol, dec 203-214°. Sol in water.