| Identification | More | [Name]
DJENKOLIC ACID | [CAS]
498-59-9 | [Synonyms]
DJENKOLIC ACID
DJENKOLIC ACID, L-
L-DJENKOLIC ACID
L-S,S'-METHYLENEDICYSTEINE
S,S'-METHYLENEDI-L-CYSTEINE
3,3'-(methylenedithio)-dialanine
jenkolic acid | [EINECS(EC#)]
207-863-4 | [Molecular Formula]
C7H14N2O4S2 | [MDL Number]
MFCD00063079 | [Molecular Weight]
254.33 | [MOL File]
498-59-9.mol |
| Chemical Properties | Back Directory | [Melting point ]
325°C (rough estimate) | [alpha ]
D20.5 -65.0° (1.0N HCl); D25 -47.5° (c = 2 in 1.0N HCl) | [Boiling point ]
515.4±50.0 °C(Predicted) | [density ]
1.4799 (rough estimate) | [refractive index ]
-65 ° (C=1, 1mol/L HCl) | [storage temp. ]
2-8°C | [pka]
pK1:2.200(＋1);pK2:8.16(0) (25°C) | [Water Solubility ]
5g/L(100 ºC) | [Merck ]
3387 | [CAS DataBase Reference]
498-59-9(CAS DataBase Reference) |
| Hazard Information | Back Directory | [Definition]
ChEBI: A dithioacetal consisting of two molecules of L-cysteine joined via their sulfanyl groups to methylene. | [Purification Methods]
Crystallise djenkolic acid from a large volume of water (solubility is 0.5g%). [du Vigneaud & Patterson J Biol Chem 114 533 1936, Greenstein & Winitz The Chemistry of the Amino Acids J. Wiley, Vol 3 pp 2682, 2687 1961, Beilstein 4 III 1591.] The N,N’-dibenzoyl derivative crystallises with 1H2O from aqueous EtOH with m 87.5-89o [Beilstein 9 III 1171.] |
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