L-Thyroxine 51-48-9 98%
L-Thyroxine Chemical Properties
Melting point 235 °C
alpha -5 º (1N NaOH:EtOH 1:2)
density 2.4440 (estimate)
Fp 9℃
storage temp. 2-8°C
solubility Dissolves in 4M ammonium hydroxide in Methanol at 50mg/ml
pka 2.2(at 25℃)
form Powder
Boiling point 576.3±50.0 °C(Predicted)
color White to Pale Brown
Water Solubility insoluble
Sensitive Light Sensitive
Merck 9491
BRN 2228515
InChIKey XUIIKFGFIJCVMT-LBPRGKRZSA-N
CAS DataBase Reference 51-48-9(CAS DataBase Reference)
EPA Substance Registry System L-Thyroxine (51-48-9)
L-Thyroxine Basic information
Overview Biosynthesis Indication and dosage Formulations Pharmacokinetics Mechanism of action Adverse reactions Precaution Reference
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;β-((3,5-Diiodo-4-hydroxyphenoxy)-3,5-diiodophenyl)alanine;3,5,3',5'-TETRAIODO-L-THYRONINE;3,3',5,5'-TETRAIODO-L-THYRONIN
CAS: 51-48-9
MF: C15H11I4NO4
MW: 776.87
EINECS: 200-101-1
Mol File: 51-48-9.mol
Safety Information
Hazard Codes Xn,T,F
Risk Statements 40-39/23/24/25-23/24/25-11
Safety Statements 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
HazardClass IRRITANT
HS Code 29379000
Hazardous Substances Data 51-48-9(Hazardous Substances Data)
Toxicity TDLo oral in child: 328ug/kg
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