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51-48-9

Basic Information
CAS No.: 51-48-9
Name: L-Tyrosine,O-(4-hydroxy-3,5-diiodophenyl)-3,5-diiodo-
Molecular Structure:
Molecular Structure of 51-48-9 (L-Tyrosine,O-(4-hydroxy-3,5-diiodophenyl)-3,5-diiodo-)
Formula: C15H11I4NO4
Molecular Weight: 776.87
Synonyms: Thyroxine,L- (8CI);(-)-Thyroxine;3,3',5,5'-Tetraiodo-L-thyronine;Henning;L-T4;L-Thyroxin;Levothyroxine;NSC 36397;T4;T4 (hormone);THX;Tetraiodothyronine;Thyrax;Thyreoideum;Thyroxin;Thyroxinal;Thyroxine;
EINECS: 200-101-1
Density: 2.635 g/cm3
Melting Point: 235 °C
Boiling Point: 576.306 °C at 760 mmHg
Flash Point: 302.339 °C
Solubility: insoluble in water
Appearance: Crystalline Solid
Hazard Symbols: HarmfulXn
Risk Codes: 40
Safety: 22-24/25-36
Transport Information:
PSA: 92.78000
LogP: 5.25760
Synthetic route
51-48-9

L-thyroxine

Conditions
ConditionsYield
With sodium hypochlorite; tert-butylamine; sodium iodide In methanol at 20 - 30℃; Reagent/catalyst; Solvent;100%
With iodine; methylamine; potassium iodide In water at 0 - 5℃; for 2h;95%
With iodine; potassium iodide; sodium hydroxide In water at -10 - 10℃; Reagent/catalyst; Temperature;76.7%
With water; iodine; ethylamine; potassium iodide
With ammonia; iodine; potassium iodide

L-thyroxine, sodium salt hexahydrate

51-48-9

L-thyroxine

Conditions
ConditionsYield
With hydrogenchloride In methanol; dimethyl sulfoxide96%
300-39-0

3,5-diiodo-l-tyrosine

5,7-diiodo-1-oxaspiro[2.5]octa-4,7-dien-6-one

51-48-9

L-thyroxine

Conditions
ConditionsYield
In N,N-dimethyl-formamide at 24℃; for 16h; 0.2 M borate buffer, pH 8.0 (add. of 0.1 M NaOH);94%
70-40-6

3,3′-diiodothyronine

51-48-9

L-thyroxine

Conditions
ConditionsYield
Stage #1: 3,3′-diiodothyronine With methylamine In methanol at 25 - 30℃;
Stage #2: With iodine In methanol at -8 - 0℃;
Stage #3: With potassium dihydrogenphosphate; sodium hydrogensulfite In methanol at 15 - 20℃;
91.2%
300-39-0

3,5-diiodo-l-tyrosine

51-48-9

L-thyroxine

Conditions
ConditionsYield
With sodium hydroxide; dihydrogen peroxide; butan-1-ol
Multi-step reaction with 4 steps
1.1: sodium hydroxide / water / 1 h
1.2: 2 h / 20 - 40 °C
2.1: diisopropylamine / water; butan-1-ol / 2 h / 20 - 90 °C
2.2: 2 h / 20 - 30 °C
3.1: acetic acid; hydrogen iodide / 5 h / 100 °C
4.1: methylamine / methanol / 25 - 30 °C
4.2: -8 - 0 °C
4.3: 15 - 20 °C
View Scheme
1027-28-7

N-acetyl-3,5-diiodo-L-tyrosine

51-48-9

L-thyroxine

Conditions
ConditionsYield
With air; water at 37℃; Erhitzen des Reaktionsprodukts mit wss. Salzsaeure und Essigsaeure;
300-39-0

3,5-diiodo-l-tyrosine

((7R,8S)-8-Hydroxy-5,7-diiodo-6-oxo-1-oxa-spiro[2.5]oct-4-en-2-yl)-oxo-acetic acid

51-48-9

L-thyroxine

Conditions
ConditionsYield
at 0℃; for 0.75h; Yield given;
27059-94-5

iodoacetamide

3,5-diiodo-thyronine

3,5-diiodo-thyronine

51-48-9

L-thyroxine

Conditions
ConditionsYield
With methanol; triethylamine
623-11-0

1-methyl-4-nitrosobenzene

300-39-0

3,5-diiodo-l-tyrosine

7722-84-1

dihydrogen peroxide

71-36-3

butan-1-ol

51-48-9

L-thyroxine

casein

casein

51-48-9

L-thyroxine

Conditions
ConditionsYield
Jodierung und anschliessende Hydrolyse;
7553-56-2

iodine

aqueous sodium hydrogencarbonate solution

aqueous sodium hydrogencarbonate solution

51-48-9

L-thyroxine

4-Hydroxymethyl-2,6-diiodo-cyclohexa-2,5-dienone

51-48-9

L-thyroxine

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: 37 percent / NaBiO3 / ethyl acetate; acetic acid; H2O / 4 h
2: 94 percent / dimethylformamide / 16 h / 24 °C / 0.2 M borate buffer, pH 8.0 (add. of 0.1 M NaOH)
View Scheme
534-51-0

3,5-diiodo-DL-thyronine

51-48-9

L-thyroxine

Conditions
ConditionsYield
Multi-step reaction with 4 steps
2: (-)-α-phenethylamine; water
3: hydrobromic acid
4: concentrated ammonia; potassium iodide; iodine
View Scheme
96679-34-4

3.5-diiodo-N.O-diacetyl-L-tyrosine

51-48-9

L-thyroxine

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: aq. NaOH solution
2: water; air / 37 °C / Erhitzen des Reaktionsprodukts mit wss. Salzsaeure und Essigsaeure
View Scheme
94298-44-9

N-formyl-3,5-diiodo-DL-thyronine

51-48-9

L-thyroxine

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: (-)-α-phenethylamine; water
2: hydrobromic acid
3: concentrated ammonia; potassium iodide; iodine
View Scheme
94298-44-9, 120408-14-2

N-formyl-3,5-diiodo-L-thyronine

51-48-9

L-thyroxine

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: hydrobromic acid
2: concentrated ammonia; potassium iodide; iodine
View Scheme
60-18-4

L-tyrosine

51-48-9

L-thyroxine

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: acetic acid; iodine monochloride
2: aq. NaOH solution; butanol-(1); aqueous hydrogen peroxide
View Scheme
Multi-step reaction with 8 steps
1: hydrogenchloride / water / 24 h / 20 °C
2: sodium hydrogencarbonate / water; tetrahydrofuran / 24 h / 20 °C
3: N-iodo-succinimide / dichloromethane / 0.67 h / 0 °C
4: N-ethyl-N,N-diisopropylamine; pyridine; copper diacetate / dichloromethane / 48 h / 20 °C / Molecular sieve
5: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.33 h / 0 - 20 °C
6: Iodine monochloride; N-butylamine / dichloromethane; N,N-dimethyl-formamide / 0.33 h / 0 °C
7: lithium hydroxide / water; methanol / 1.5 h / 4 °C
8: hydrogenchloride / 1,4-dioxane / 20 °C / Inert atmosphere
View Scheme

O-(4-hydroxy-3,5-diiodophenyl)-3,5-diiodo-L-tyrosine disodium salt

51-48-9

L-thyroxine

Conditions
ConditionsYield
With hydrogenchloride In water at 20℃; for 1h; pH=~ 4 - 5;
300-30-1

thyroxine

A

51-48-9

L-thyroxine

B

51-49-0

dextrothyroxine

Conditions
ConditionsYield
With chiral stationary phase including isopropyl-functionalized CF6 In methanol; acetic acid; triethylamine; acetonitrile at 20℃; Purification / work up;
1431868-09-5

methyl (S)-2-((tert-butoxycarbonyl)amino)-3-(4-(4-hydroxy-3,5-diaiodophenoxy)-3,5-diaiodophenyl)propanoate

51-48-9

L-thyroxine

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1: lithium hydroxide / water; methanol / 1.5 h / 4 °C
2: hydrogenchloride / 1,4-dioxane / 20 °C / Inert atmosphere
View Scheme

(S)-2-((tert-butoxycarbonyl)amino)-3-(4-(4-hydroxy-3,5-diaiodophenoxy)-3,5-diaiodophenyl)propanoic acid

51-48-9

L-thyroxine

Conditions
ConditionsYield
With hydrogenchloride In 1,4-dioxane at 20℃; Inert atmosphere;
1080-06-4

L-Tyr-OMe

51-48-9

L-thyroxine

Conditions
ConditionsYield
Multi-step reaction with 7 steps
1: sodium hydrogencarbonate / water; tetrahydrofuran / 24 h / 20 °C
2: N-iodo-succinimide / dichloromethane / 0.67 h / 0 °C
3: N-ethyl-N,N-diisopropylamine; pyridine; copper diacetate / dichloromethane / 48 h / 20 °C / Molecular sieve
4: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.33 h / 0 - 20 °C
5: Iodine monochloride; N-butylamine / dichloromethane; N,N-dimethyl-formamide / 0.33 h / 0 °C
6: lithium hydroxide / water; methanol / 1.5 h / 4 °C
7: hydrogenchloride / 1,4-dioxane / 20 °C / Inert atmosphere
View Scheme
4326-36-7

(S)-N-(tert-butoxycarbonyl)tyrosine methyl ester

51-48-9

L-thyroxine

Conditions
ConditionsYield
Multi-step reaction with 6 steps
1: N-iodo-succinimide / dichloromethane / 0.67 h / 0 °C
2: N-ethyl-N,N-diisopropylamine; pyridine; copper diacetate / dichloromethane / 48 h / 20 °C / Molecular sieve
3: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.33 h / 0 - 20 °C
4: Iodine monochloride; N-butylamine / dichloromethane; N,N-dimethyl-formamide / 0.33 h / 0 °C
5: lithium hydroxide / water; methanol / 1.5 h / 4 °C
6: hydrogenchloride / 1,4-dioxane / 20 °C / Inert atmosphere
View Scheme
128781-80-6

(S)-methyl 2-((tert-butoxycarbonyl)amino)-3-(4-hydroxy-3,5-diiodophenyl)propanoate

51-48-9

L-thyroxine

Conditions
ConditionsYield
Multi-step reaction with 5 steps
1: N-ethyl-N,N-diisopropylamine; pyridine; copper diacetate / dichloromethane / 48 h / 20 °C / Molecular sieve
2: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.33 h / 0 - 20 °C
3: Iodine monochloride; N-butylamine / dichloromethane; N,N-dimethyl-formamide / 0.33 h / 0 °C
4: lithium hydroxide / water; methanol / 1.5 h / 4 °C
5: hydrogenchloride / 1,4-dioxane / 20 °C / Inert atmosphere
View Scheme
1016161-91-3

C30H43I2NO6Si

51-48-9

L-thyroxine

Conditions
ConditionsYield
Multi-step reaction with 4 steps
1: tetrabutyl ammonium fluoride / tetrahydrofuran / 0.33 h / 0 - 20 °C
2: Iodine monochloride; N-butylamine / dichloromethane; N,N-dimethyl-formamide / 0.33 h / 0 °C
3: lithium hydroxide / water; methanol / 1.5 h / 4 °C
4: hydrogenchloride / 1,4-dioxane / 20 °C / Inert atmosphere
View Scheme
1431868-05-1

C21H23I2NO6

51-48-9

L-thyroxine

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1: Iodine monochloride; N-butylamine / dichloromethane; N,N-dimethyl-formamide / 0.33 h / 0 °C
2: lithium hydroxide / water; methanol / 1.5 h / 4 °C
3: hydrogenchloride / 1,4-dioxane / 20 °C / Inert atmosphere
View Scheme

3,5-diiodo L-tyrosine copper complex

51-48-9

L-thyroxine

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1.1: diisopropylamine / water; butan-1-ol / 2 h / 20 - 90 °C
1.2: 2 h / 20 - 30 °C
2.1: acetic acid; hydrogen iodide / 5 h / 100 °C
3.1: methylamine / methanol / 25 - 30 °C
3.2: -8 - 0 °C
3.3: 15 - 20 °C
View Scheme
6293-71-6

4,4'-dimethoxydiphenyliodonium iodide

51-48-9

L-thyroxine

Conditions
ConditionsYield
Multi-step reaction with 3 steps
1.1: diisopropylamine / water; butan-1-ol / 2 h / 20 - 90 °C
1.2: 2 h / 20 - 30 °C
2.1: acetic acid; hydrogen iodide / 5 h / 100 °C
3.1: methylamine / methanol / 25 - 30 °C
3.2: -8 - 0 °C
3.3: 15 - 20 °C
View Scheme
94345-95-6

2-amino-3-(3,5-diiodo-4-(4-methoxyphenoxy)phenyl)propanoic acid

51-48-9

L-thyroxine

Conditions
ConditionsYield
Multi-step reaction with 2 steps
1.1: acetic acid; hydrogen iodide / 5 h / 100 °C
2.1: methylamine / methanol / 25 - 30 °C
2.2: -8 - 0 °C
2.3: 15 - 20 °C
View Scheme
79-33-4

L-Lactic acid

87-69-4

L-Tartaric acid

51-48-9

L-thyroxine

C4H6O6*C15H11I4NO4*C3H6O3

Conditions
ConditionsYield
at 10 - 20℃; for 168h;99.5%
51-48-9

L-thyroxine

55-03-8

L-thyroxine sodium

Conditions
ConditionsYield
With sodium carbonate In water Reflux;98%
Stage #1: L-thyroxine With sulfuric acid; ammonia In butan-1-ol at 5 - 65℃; for 1h; pH=8;
Stage #2: With sodium hydroxide In propan-1-ol; butan-1-ol at 25 - 50℃; pH=10;
83%
With sodium carbonate Reflux;79.2%
With sodium carbonate In propan-1-ol; water at 80 - 90℃; for 1h;68%
87-69-4

L-Tartaric acid

51-48-9

L-thyroxine

C4H6O6*C15H11I4NO4

Conditions
ConditionsYield
In ethanol for 72h;96%
51-48-9

L-thyroxine

Conditions
ConditionsYield
With sodium sulfite In water at 130℃; for 2h; Sealed tube; Microwave irradiation; Green chemistry;92%
51-48-9

L-thyroxine

O-(4-hydroxy-3,5-diiodophenyl)-3,5-diiodo-L-tyrosine disodium salt

Conditions
ConditionsYield
With sodium hydroxide In propan-1-ol; water at 80 - 90℃;91%
With sodium hydroxide In ethanol for 0.25h; Reflux;
24424-99-5

di-tert-butyl dicarbonate

51-48-9

L-thyroxine

(S)-2-((tert-butoxycarbonyl)amino)-3-(4-(4-hydroxy-3,5-diaiodophenoxy)-3,5-diaiodophenyl)propanoic acid

Conditions
ConditionsYield
In N,N-dimethyl-formamide at 20℃; for 2h;90%
In N,N-dimethyl-formamide at 20℃; for 2h;90%
With triethylamine In N,N-dimethyl-formamide at 20℃; for 1h;50%
With sodium carbonate In dimethyl sulfoxide
With hydrogenchloride; sodium hydrogencarbonate In N-methyl-acetamide; methanol; water4.2 g (4.8 mmol, 83%)
51-48-9

L-thyroxine

77-76-9

2,2-dimethoxy-propane

methyl (S)-2-amino-3-(4-(4-hydroxy-3,5-diaiodophenoxy)-3,5-diaiodophenyl)propanoate hydrochloride

Conditions
ConditionsYield
With hydrogenchloride In methanol; water87%
With hydrogenchloride In methanol; water87%
3392-12-9

Boc-Val-ONSu

51-48-9

L-thyroxine

N-(t-butoxycarbonyl)-L-valyl-L-thyroxine

Conditions
ConditionsYield
With triethylamine In tetrahydrofuran; water at 20℃; Condensation;85%
51-48-9

L-thyroxine

144-62-7

oxalic acid

C15H11I4NO4*C2H2O4

Conditions
ConditionsYield
In ethanol at 10 - 20℃; for 120h;82.5%
32315-10-9

bis(trichloromethyl) carbonate

51-48-9

L-thyroxine

C16H9I4NO5

Conditions
ConditionsYield
In tetrahydrofuran at 50℃; for 1h;80%
32315-10-9

bis(trichloromethyl) carbonate

51-48-9

L-thyroxine

L-thyroxine-N-carboxyanhydride

Conditions
ConditionsYield
In tetrahydrofuran at 50℃; for 1h; Inert atmosphere;80%
51-48-9

L-thyroxine

73122-01-7

α-(N-Trifluoroacetyl)amino-β-[3,5-diiodo-4-(3',5'-diiodo-4'-hydroxyphenoxy)phenyl] propanoic acid

Conditions
ConditionsYield
With sodium hydrogencarbonate; trifluoroacetic acid; trifluoroacetic anhydride In water; ethyl acetate70.5%
With sodium hydrogencarbonate; trifluoroacetic acid; trifluoroacetic anhydride In water; ethyl acetate70.5%
51-48-9

L-thyroxine

75-03-6

ethyl iodide

1021496-83-2

2-(ethylamino)-3-[4-(4-hydroxy-3,5-diiodophenoxy)-3,5-diiodophenyl]propanoic acid

Conditions
ConditionsYield
In N,N-dimethyl-formamide at 20℃; for 2h;62%
In N,N-dimethyl-formamide at 20℃; for 2h;62%
106-31-0

butanoic acid anhydride

51-48-9

L-thyroxine

806620-06-4

2-(butyrylamino)-3-[4-(4-hydroxy-3,5-diiodophenoxy)-3,5-diiodophenyl]propanoic acid

Conditions
ConditionsYield
With triethylamine In N,N-dimethyl-formamide at 20℃; for 0.0833333h;50%
Stage #1: L-thyroxine With triethylamine In N,N-dimethyl-formamide at 20℃; for 0.0833333h;
Stage #2: butanoic acid anhydride In N,N-dimethyl-formamide at 20℃;
45%
Stage #1: L-thyroxine With triethylamine In N,N-dimethyl-formamide at 20℃; for 0.0833333h;
Stage #2: butanoic acid anhydride In N,N-dimethyl-formamide at 20℃; for 0.75h;
45%
51-48-9

L-thyroxine

108-24-7

acetic anhydride

26041-53-2

2-acetamido-3-[4-(4-acetoxy-3,5-diiodophenoxy)-3,5-diiodophenyl]propanoic acid

Conditions
ConditionsYield
Stage #1: L-thyroxine With triethylamine In N,N-dimethyl-formamide at 20℃; for 0.0833333h;
Stage #2: acetic anhydride In N,N-dimethyl-formamide at 20℃;
50%
With pyridine at 0 - 23℃; for 12h; Inert atmosphere;
51-48-9

L-thyroxine

75-03-6

ethyl iodide

1083039-06-8

ethyl 2-(ethylamino)-3-[4-(4-hydroxy-3,5-diiodophenoxy)-3,5-diiodophenyl]propanoate

Conditions
ConditionsYield
Stage #1: L-thyroxine With caesium carbonate In N,N-dimethyl-formamide at 20℃; for 0.0833333h;
Stage #2: ethyl iodide In N,N-dimethyl-formamide at 20℃; for 1h;
50%
Stage #1: L-thyroxine With caesium carbonate In N,N-dimethyl-formamide at 20℃; for 0.0833333h;
Stage #2: ethyl iodide In N,N-dimethyl-formamide at 20℃;
10%
51-48-9

L-thyroxine

89889-52-1

biotinamidocaproate N-hydroxysuccinimide ester

Conditions
ConditionsYield
With sodium hydrogencarbonate In water; dimethyl sulfoxide at 20℃; Cooling with ice;42%
51-48-9

L-thyroxine

L-thyroxine sulfate

Conditions
ConditionsYield
With chlorosulfonic acid; trifluoroacetic acid at 0℃; for 0.166667h;40%
51-48-9

L-thyroxine

74-88-4

methyl iodide

1234572-93-0

potassium 3-[4-(4-hydroxy-3,5-diiodophenoxy)-3,5-diiodophenyl]-2-(methylamino)propanoate dihydrate

Conditions
ConditionsYield
Stage #1: L-thyroxine; methyl iodide In N,N-dimethyl-formamide at 20℃; for 2h;
Stage #2: With potassium carbonate In N,N-dimethyl-formamide
24%
Stage #1: L-thyroxine; methyl iodide With triiodothyronine In N,N-dimethyl-formamide at 20℃; for 2h;
Stage #2: With potassium carbonate In water; N,N-dimethyl-formamide
24%
51-48-9

L-thyroxine

O-[3,5-diiodo-4-(sulfooxy)phenyl]-3,5-diiodo-L-tyrosine sodium salt

Conditions
ConditionsYield
Stage #1: L-thyroxine With chlorosulfonic acid In N,N-dimethyl acetamide at 0 - 20℃; for 5h; Inert atmosphere;
Stage #2: With sodium hydrogencarbonate; sodium carbonate In N,N-dimethyl acetamide; water for 1.5h;
18%
51-48-9

L-thyroxine

1596-67-4

O-(4-hydroxyphenyl)-3,5-diiodo-L-tyrosine

Conditions
ConditionsYield
With potassium hydroxide; palladium Hydrogenation;
With sodium tetrahydroborate; C10H8STe; D,L-dithiothreitol In aq. phosphate buffer at 37℃; for 0.5h; pH=7.5; Reagent/catalyst;
51-48-9

L-thyroxine

79-04-9

chloroacetyl chloride

97738-15-3

N-chloroacetyl-3,5,3',5'-tetraiodo-L-thyronine

Conditions
ConditionsYield
With ethyl acetate
51-48-9

L-thyroxine

77-78-1

dimethyl sulfate

4-(3,5-diiodo-4-methoxy-phenoxy)-3,5-diiodo-trans-cinnamic acid

Conditions
ConditionsYield
With sodium hydroxide
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    Tel:+86-571-87396432

    Address:No.200 Zhenhua Rd.Xihu Industrial Park, Hangzhou 310030, China

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  • High Quality L-Tyrosine,O-(4-hydroxy-3,5-diiodophenyl)-3,5-diiodo

  • Casno:

    51-48-9

    High Quality L-Tyrosine,O-(4-hydroxy-3,5-diiodophenyl)-3,5-diiodo

    Min.Order: 1 Gram

    FOB Price:  USD $ 1.0-1.0/Gram

    Qingdao Sigma Chemical Ltd is is a global chemical industry manufacturers and suppliers of pharmaceuticals and intermediates, peptide,Nootropis etc API, food and feed additives, herbal extracts, agrochemicals and fine chemicals etc. Our Labo

    SHANDONG SIGMACHEMICAL is mainly engaged in R&D, manufacturing and marketing pharmaceuticals, chemical intermediates, Biochemicals, Veterinary medicines and Nutrition products. Wit

  •  Qingdao Sigma Chemical Co., Ltd.

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    Business Type:Trading Company

    Tel:0532-80916960

    Address:shandong qingdao

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  • Top Quality T4 L-Thyroxine

  • Casno:

    51-48-9

    Top Quality T4 L-Thyroxine

    Min.Order: 1 Kilogram

    FOB Price:  USD $ 100.0-100.0/Kilogram

    HangYu Chemical is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality pharmaceuticals, intermediates, special chemicals and OLED intermediates and other fine chemicals. HangYu Chemical consis

    Zibo HangYu Chemical is a leading manufacturer and supplier of chemicals in China. We develop produce and distribute high quality pharmaceuticals, intermediates, special chemicals

  •  Zibo Hangyu Import&Export Co., Ltd

    China (Mainland)  |  Contact Details

    Business Type:Lab/Research institutions

    Tel:86-15988566987

    Address:Room1701, Tianxing Building,Licheng district, jinan, Shandong, China

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Specification

The Levothyroxine, with the CAS registry number 51-48-9, is also known as L-thyroxine. It belongs to the product categories of Amino Acids; Organics; Heterocyclic Compounds; Amino Acids & Derivatives; Intermediates & Fine Chemicals; Pharmaceuticals; Isotope Labeled Compounds. Its EINECS registry number is 200-101-1. This chemical's molecular formula is C15H11I4NO4 and molecular weight is 776.87002. Its IUPAC name is called (2S)-2-amino-3-[4-(4-hydroxy-3,5-diiodophenoxy)-3,5-diiodophenyl]propanoic acid. This chemical's classification codes are Hormone; Human Data; Mutation data; Reproductive Effect. 

Physical properties of Levothyroxine: (1)ACD/LogP: 4.72; (2)# of Rule of 5 Violations: 1; (3)ACD/LogD (pH 5.5): 2.206; (4)ACD/LogD (pH 7.4): 1.678; (5)ACD/BCF (pH 5.5): 6.982; (6)ACD/BCF (pH 7.4): 2.069; (7)ACD/KOC (pH 5.5): 27.027; (8)ACD/KOC (pH 7.4): 8.01; (9)#H bond acceptors: 5; (10)#H bond donors: 4; (11)#Freely Rotating Bonds: 7; (12)Index of Refraction: 1.795; (13)Molar Refractivity: 125.446 cm3; (14)Molar Volume: 294.745 cm3; (15)Surface Tension: 79.617 dyne/cm; (16)Density: 2.636 g/cm3; (17)Flash Point: 302.339 °C; (18)Enthalpy of Vaporization: 90.781 kJ/mol; (19)Boiling Point: 576.306 °C at 760 mmHg; (20)Vapour Pressure: 0 mmHg at 25°C.

Preparation: this chemical can be extracted from animal thyroid, but also can use 5-bis iodine-L-tyrosine as raw material.

Levothyroxine can be used as a hormone replacement for patients with thyroid problems. This medicine is a hormone replacement usually given to patients with hypothyroidism. Levothyroxine is also frequently used to treat goiter because it usually lowers the levels of thyroid-stimulating hormone, a hormone that is considered goitrogenic. This chemical can be used in veterinary. The dosage for dogs with hypothyroidism is usually a twice daily dose of between 10-40 μg per kg of body weight.

When you are using this chemical, please be cautious about it as the following:
This chemical may cause damage to health. There is limited evidence of a carcinogenic effect. You should not breathe its dust. What's more, you must avoid contacting it with skin and eyes. Whenever you will contact it, please wear suitable protective clothing.

You can still convert the following datas into molecular structure:
(1)Canonical SMILES: C1=C(C=C(C(=C1I)OC2=CC(=C(C(=C2)I)O)I)I)CC(C(=O)O)N
(2)Isomeric SMILES: C1=C(C=C(C(=C1I)OC2=CC(=C(C(=C2)I)O)I)I)C[C@@H](C(=O)O)N
(3)InChI: InChI=1S/C15H11I4NO4/c16-8-4-7(5-9(17)13(8)21)24-14-10(18)1-6(2-11(14)19)3-12(20)15(22)23/h1-2,4-5,12,21H,3,20H2,(H,22,23)/t12-/m0/s1
(4)InChIKey: XUIIKFGFIJCVMT-LBPRGKRZSA-N

The toxicity data is as follows:

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
child TDLo oral 328ug/kg (0.328mg/kg) CARDIAC: PULSE RATE INCREASE WITHOUT FALL IN BP

VASCULAR: BP LOWERING NOT CHARACTERIZED IN AUTONOMIC SECTION
Pediatrics. Vol. 73, Pg. 313, 1984.
man TDLo oral 63ug/kg (0.063mg/kg) BEHAVIORAL: "HALLUCINATIONS, DISTORTED PERCEPTIONS"

CARDIAC: PULSE RATE INCREASE WITHOUT FALL IN BP
Journal of Toxicology, Clinical Toxicology. Vol. 20, Pg. 517, 1983.
man TDLo oral 10286ug/kg (10.286mg/kg) BEHAVIORAL: EXCITEMENT

CARDIAC: PULSE RATE INCREASE WITHOUT FALL IN BP

GASTROINTESTINAL: NAUSEA OR VOMITING
Veterinary and Human Toxicology. Vol. 41, Pg. 323, 1999.
women TDLo oral 400ug/kg/2D-I (0.4mg/kg) BEHAVIORAL: COMA

CARDIAC: ARRHYTHMIAS (INCLUDING CHANGES IN CONDUCTION)
Intensive Care Medicine. Vol. 13, Pg. 33, 1987.