L-Thyroxine CAS#: 51-48-9; ChemWhat Code: 52640
| Names & Identifiers | 
| Product Name | L-Thyroxine | 
| Synonyms | 3,5,3’,5’-tetraiodothyronine;beta-[(3,5-diiodo-4-hydroxyphenoxy)-3,5-diiodophenyl]alanine;l-3,5,3’,5’-tetraiodothyronine;l-t4;o-(4-hydroxy-3,5-diiodophenyl)-3,5-diiodo-l-tyrosin;o-(4-hydroxy-3,5-diiodophenyl)-3,5-diiodotyrosine;t4(hormone);tetraiodothyronine | 
| CAS Registry Number | 51-48-9 | 
| Molecular Formula | C15H11I4NO4 | 
| Molecular Weight | 776.87 | 
| EINECS | 200-101-1 | 
| Other Registry Numbers | |
| More Identifiers on PubChem | IUPA Names, InChI, InChI Key, Canonical SMILES, etc. | 
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| Chemical & Physical Properties | 
| Melting point | 235 °C | 
| alpha | -5 º (1N NaOH:EtOH 1:2) | 
| Flash Point | 9℃ | 
| Storage | 2-8°C | 
| Solubulity | Dissolves in 4M ammonium hydroxide in Methanol at 50mg/ml | 
| pka | 2.2(at 25℃) | 
| form | Powder | 
| Color | White to Pale Brown | 
| Water Solubility | insoluble | 
| Sensitive | Light Sensitive | 
| Merck | 9491 | 
| InChIKey | XUIIKFGFIJCVMT-LBPRGKRZSA-N | 
| More Properties From PubChem | Topological Polar Surface Area, Monoisotopic Mass, etc. | 
| EPA Substance Registry System | L-Tyrosine, O-(4-hydroxy-3,5-diiodophenyl)- 3,5-diiodo-(51-48-9) | 
| Safety & Hazards(Codes & Phrases) | 
| Hazard Codes | Xn,T,F | 
| R Phrase | 40-39/23/24/25-23/24/25-11 | 
| S Phrase | 22-24/25-36-45-36/37-16 | 
| RIDADR | UN1230 – class 3 – PG 2 – Methanol, solution | 
| WGK Germany | 3 | 
| RTECS | YP2833500 | 
| F | 8-10 | 
| TSCA | Yes | 
| Storage Class | IRRITANT | 
| Hazardous Substances Data | 51-48-9(Hazardous Substances Data) | 
| More Safety & Hazards From PubChem | Signal, GHS Hazard Statements, Precautionary Statement Codes, etc. | 
| Literature | 
| Literature on PubChem | Synthesis References, Metabolite References, etc. | 
| Patents | 
| Patents on PubChem | Related Patents Of This Product | 
| Transportation, Storage & Usage | 
| Transportation | No Information | 
| Storage | No Information | 
| Usage | No Information | 
| Spectral Properties | 
| No Information | 
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