| CAS Number | 52-90-4 |
| Catalog Description | L-Cysteine, 98% |
| Synonym | L-2-Amino-3-mercaptopropionic acid |
| Synonym | H-Cys-OH |
| MDL Number | MFCD00064306 |
| Master Molecular formula | C3H7NO2S |
| Molecular formula | C3H7NO2S |
| Melting point in C | 240° (decomposes) |
| Optical Rotation | [α]20/D +6.5±1.5°, c = 2 in 5M HCl |
| Merck Number | 14,2781 |
| Beilstein | 1721408 |
| Sensitivity | Air Sensitive |
| EC Number | 200-158-2 |
| Shipping | Non-hazardous for shipping |
| CAS Number | 52-90-4 |
| Signal Word | Warning |
| Pictogram code 1 |
|
| H Phrases | H302 |
| P Phrases | P264-P270-P301+P312-P330-P501A |
| TSCA | Yes |
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