| Stereochemistry | ABSOLUTE |
| Molecular Formula | C6H12N2O4S2 |
| Molecular Weight | 240.3 |
| Optical Activity | UNSPECIFIED |
| Defined Stereocenters | 2 / 2 |
| E/Z Centers | 0 |
| Charge | 0 |
SHOW SMILES / InChI
SMILES
N[C@H](CSSC[C@@H](N)C(O)=O)C(O)=O
InChI
InChIKey=LEVWYRKDKASIDU-QWWZWVQMSA-N
InChI=1S/C6H12N2O4S2/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)/t3-,4-/m1/s1
DL-Cystine is a racemic mixture of the proteinogenic amino acids L-cystine and the non-proteinogenic D-cystine. Cystine is the oxidized dimer form of the amino acid cysteine. L-Cystine serves two biological functions, a site of redox reactions and a mechanical linkage that allows proteins to retain their 3-dimensional structure. DL-cystine is used in the preparation of sulfur-containing dimeric and monomeric surfactants.
CNS Activity
Originator
Approval Year
Targets
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PubMed
Patents
Sample Use Guides
The study was performed with the MG 155 strain of the dermatophyte Microsporum gypseum (ATCC 26 554). For inoculum we used a suspension of spores (100/nL) released from the surface of cultures cultivated for 10 d on Sabouraud's agar (4 % glucose, 1% peptone) at 26C after shaking with glass beads. The medium contained 0.8 % glucose, 0.2 % arginine hydrochloride and 0.04 % potassium dihydrogenphosphate, and was sterilized repeatedly in a stream of steam. As a source of sulphur the basic medium A contained 1 mM sodium sulphate, medium B 3 mM L-cystine and medium C 3 mM DL-cystine. Cystine was added to the sterile medium in the form of a concentrated solution in 1 ~t hydrochloric acid and the medium was immediately neutralized with 1 M potassium hydroxide.
SUBSTANCE RECORD
