Levothyroxine Ethyl Ester

SZ CAT No:	SZ-L022020
CAS No	76353-71-4
Mol.F.	C17H15I4NO4
Mol.Wt.	804.9
Inv. Status	Custom Synthesis

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Chemical Name: Ethyl (S)-2-amino-3-(4-(4-hydroxy-3,5-diiodophenoxy)-3,5-diiodophenyl)propanoate

Shipping Temperature: Ambient

HSN Code: 38229010

Country of Origin: India

Smiles: OC1=C(I)C=C(OC2=C(I)C=C(C[C@H](N)C(OCC)=O)C=C2I)C=C1I

Levothyroxine Ethyl Ester is chemically Ethyl (S)-2-amino-3-(4-(4-hydroxy-3,5-diiodophenoxy)-3,5-diiodophenyl)propanoate. Levothyroxine Ethyl Ester is supplied with detailed characterization data compliant with regulatory guideline. Levothyroxine Ethyl Ester can be used for the analytical method development, method validation (AMV), Quality Controlled (QC) application for Abbreviated New Drug Application (ANDA) or during commercial production of Levothyroxine.

The product can be used as reference standards and further traceability against pharmacopeial standards (USP or EP) can be provided based on feasibility. SynZeal products are for analytical purpose only and not for human use.

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Levothyroxine EP Impurity H

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Levothyroxine EP Impurity I

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Levothyroxine EP Impurity J

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Levothyroxine EP Impurity K

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Levothyroxine Sodium Hydrate

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Mol.F.	: C15H10I4NO4 : Na : x(H2O)
Mol.Wt.	: 775.9 : 23.0 : x(18.0)
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Levothyroxine T4-Hydroxyacetic Acid

SZ CAT No:	: SZ-L022014
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Mol.F.	: C14H8I4O5
Mol.Wt.	: 763.8
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Levothyroxine Sodium Pentahydrate

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Mol.F.	: C15H10I4NO4 : Na : 5(H2O)
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Levothyroxine EP Impurity A

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Levothyroxine EP Impurity B

SZ CAT No:	: SZ-L022003
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Mol.F.	: C15H11ClI3NO4
Mol.Wt.	: 685.4
Inv. Status	: Custom Synthesis

Levothyroxine EP Impurity C

SZ CAT No:	: SZ-L022004
CAS No	: 51-24-1
Mol.F.	: C14H9I3O4
Mol.Wt.	: 621.9
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Levothyroxine EP Impurity D

SZ CAT No:	: SZ-L022005
CAS No	: 67-30-1
Mol.F.	: C14H8I4O4
Mol.Wt.	: 747.8
Inv. Status	: In Stock

Levothyroxine EP Impurity E

SZ CAT No:	: SZ-L022006
CAS No	: 1041-01-6
Mol.F.	: C15H13I2NO4
Mol.Wt.	: 525.1
Inv. Status	: In Stock

Levothyroxine N-Formyl Impurity

SZ CAT No:	: SZ-L022015
CAS No	: 671235-41-9
Mol.F.	: C16H11I4NO5
Mol.Wt.	: 804.9
Inv. Status	: In Stock

T4-Acetamide

SZ CAT No:	: SZ-L022016
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Mol.F.	: C14H9I4NO3
Mol.Wt.	: 746.8
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Levothyroxine N-Acetyl Impurity

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Mol.F.	: C17H13I4NO5
Mol.Wt.	: 818.9
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Levothyroxine Hydroxyphenoxy Aldehyde Impurity

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Mol.F.	: C13H8I2O3
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Levothyroxine Methoxyphenoxy Aldehyde Impurity

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Mol.F.	: C14H10I2O3
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Levothyroxine Ethyl Ester

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Mol.F.	: C17H15I4NO4
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Levothyroxine Methyl Ester

SZ CAT No:	: SZ-L022021
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Mol.F.	: C16H13I4NO4
Mol.Wt.	: 790.9
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Levothyroxine Monochloro Impurity

SZ CAT No:	: SZ-L022022
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Mol.F.	: C15H11ClI3NO4
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Levothyroxine N-Methylamide (USP)

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Mol.Wt.	: 789.9
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Levothyroxine D-Isomer

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Mol.Wt.	: 776.9
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Mol.Wt.	: 746.9
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3,5,3',5'-Tetraiodo Thyrolactic Acid

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L-Tyrosine,3,5-diiodo-o-(4-Methoxyphenyl)

SZ CAT No:	: SZ-L022027
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Mol.F.	: C16H15I2NO4
Mol.Wt.	: 539.1
Inv. Status	: Custom Synthesis

Levothyroxine Impurity 1

SZ CAT No:	: SZ-L022028
CAS No	: 2055-94-9
Mol.F.	: C13H8I4O3
Mol.Wt.	: 719.8
Inv. Status	: In Stock

Levothyroxine Impurity 2

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Levothyroxine Impurity 3

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Levothyroxine Impurity 4

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Inv. Status	: Custom Synthesis

Levothyroxine D3

SZ CAT No:	: SZ-L022D01
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Mol.F.	: C15H8D3I4NO4
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Levothyroxine

SZ CAT No:	: SZ-L022032
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Levothyroxine Impurity 5

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Levothyroxine Glucose Adduct

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Mol.Wt.	: 939.0
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T4-Formic acid N-methylamide

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Levothyroxine Impurity 6

SZ CAT No:	: SZ-L022036
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Inv. Status	: Custom Synthesis

N-Acetyl L-Thyroxine Ethyl Ester

SZ CAT No:	: SZ-L022037
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Mol.Wt.	: 847.0
Inv. Status	: In Stock

3-Bromo-L-Thyroxine

SZ CAT No:	: SZ-L022038
CAS No	: 1798894-90-2
Mol.F.	: C15H11BrI3NO4
Mol.Wt.	: 729.9
Inv. Status	: Custom Synthesis

Liothyronine Maillard Lactose Impurity

SZ CAT No:	: SZ-L022039
CAS No	: NA
Mol.F.	: C27H32I3NO14
Mol.Wt.	: 975.3
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Levothyroxine Mannitol Adduct

SZ CAT No:	: SZ-L022040
CAS No	: NA
Mol.F.	: C21H23I4NO9
Mol.Wt.	: 941.0
Inv. Status	: Custom Synthesis

3,5-Dichloro-L-Tyrosine

SZ CAT No:	: SZ-L022041
CAS No	: 15106-62-4
Mol.F.	: C9H9Cl2NO3
Mol.Wt.	: 250.1
Inv. Status	: In Stock

3,5-Dibromo-L-tyrosine

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Mol.F.	: C9H9Br2NO3
Mol.Wt.	: 339.0
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β-Hydroxy Thyroxine

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Mol.F.	: C15H11I4NO5
Mol.Wt.	: 792.9
Inv. Status	: Custom Synthesis

Levothyroxine Lactose Adduct

SZ CAT No:	: SZ-L022045
CAS No	: NA
Mol.F.	: C27H32I3NO14
Mol.Wt.	: 975.3
Inv. Status	: Custom Synthesis

Levothyroxine Impurity 9

SZ CAT No:	: SZ-L022047
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Mol.F.	: C7H4INO4
Mol.Wt.	: 293.0
Inv. Status	: Custom Synthesis

Levothyroxine Sodium

SZ CAT No:	: SZ-L022044
CAS No	: 55-03-8
Mol.F.	: C15H10I4NO4 : Na
Mol.Wt.	: 775.9 : 23.0
Inv. Status	: Custom Synthesis

Thyroxamine Hydrochloride

SZ CAT No:	: SZ-L022048
CAS No	: 788824-71-5
Mol.F.	: C14H11I4NO2 : HCl
Mol.Wt.	: 732.9 : 36.5
Inv. Status	: In Stock

3-Monoiodothyronine

SZ CAT No:	: SZ-L022049
CAS No	: 16170-92-6
Mol.F.	: C15H14INO4
Mol.Wt.	: 399.2
Inv. Status	: Custom Synthesis

Levothyroxine Impurity 10

SZ CAT No:	: SZ-L022050
CAS No	: NA
Mol.F.	: C16H11I4NO5
Mol.Wt.	: 804.9
Inv. Status	: Custom Synthesis

Thyroxine Sodium

SZ CAT No:	: SZ-L022051
CAS No	: NA
Mol.F.	: C15H11I4NO4 : Na
Mol.Wt.	: 776.9 : 23.0
Inv. Status	: Custom Synthesis

Levothyroxine Impurity 11

SZ CAT No:	: SZ-L022052
CAS No	: 2244907-74-0
Mol.F.	: C13H12IO2 : CF3O3S
Mol.Wt.	: 327.1 : 149.1
Inv. Status	: Custom Synthesis

Levothyroxine Impurity 12

SZ CAT No:	: SZ-L022053
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Mol.F.	: C9H9ClINO3
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Levothyroxine Ethyl Ester

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