Levothyroxine Ethyl Ester

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

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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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CAS No	: 25416-65-3
Mol.F.	: C15H10I4NO4 : Na : x(H2O)
Mol.Wt.	: 775.9 : 23.0 : x(18.0)
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Rel. CAS No	: 51-48-9 (free base) : 55-03-8 (Na salt)

Levothyroxine T4-Hydroxyacetic Acid

SZ CAT No:	: SZ-L022014
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Levothyroxine Sodium Pentahydrate

SZ CAT No:	: SZ-L022001
CAS No	: 25416-65-3
Mol.F.	: C15H10I4NO4 : Na : 5(H2O)
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Levothyroxine EP Impurity A

SZ CAT No:	: SZ-L022002
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Mol.F.	: C15H11I3NO4 : Na
Mol.Wt.	: 650.0 : 23.0
Inv. Status	: In Stock
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Levothyroxine EP Impurity B

SZ CAT No:	: SZ-L022003
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Mol.F.	: C15H11ClI3NO4
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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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Rel. CAT No	: SZ-L077004 ,

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
Rel. CAT No	: SZ-L077005 ,

Levothyroxine EP Impurity E

SZ CAT No:	: SZ-L022006
CAS No	: 1041-01-6
Mol.F.	: C15H13I2NO4
Mol.Wt.	: 525.1
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Levothyroxine N-Formyl Impurity

SZ CAT No:	: SZ-L022015
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Mol.F.	: C16H11I4NO5
Mol.Wt.	: 804.9
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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.Wt.	: 466.0
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Levothyroxine Methoxyphenoxy Aldehyde Impurity

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CAS No	: 69240-57-9
Mol.F.	: C14H10I2O3
Mol.Wt.	: 480.0
Inv. Status	: In Stock

Levothyroxine Ethyl Ester

SZ CAT No:	: SZ-L022020
CAS No	: 76353-71-4
Mol.F.	: C17H15I4NO4
Mol.Wt.	: 804.9
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Levothyroxine Methyl Ester

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

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Levothyroxine N-Methylamide (USP)

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Mol.F.	: C16H14I4N2O3
Mol.Wt.	: 789.9
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Levothyroxine D-Isomer

SZ CAT No:	: SZ-L022024
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Mol.Wt.	: 776.9
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Levothyroxine O-Methyl Amine Impurity

SZ CAT No:	: SZ-L022025
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Mol.F.	: C15H13I4NO2
Mol.Wt.	: 746.9
Inv. Status	: In Stock

3,5,3',5'-Tetraiodo Thyrolactic Acid

SZ CAT No:	: SZ-L022026
CAS No	: 7069-47-8
Mol.F.	: C15H10I4O5
Mol.Wt.	: 777.9
Inv. Status	: Out of Stock, Custom Synthesis

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

SZ CAT No:	: SZ-L022027
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Levothyroxine Impurity 1

SZ CAT No:	: SZ-L022028
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Levothyroxine Impurity 2

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Levothyroxine Impurity 3

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Levothyroxine Impurity 4

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Mol.F.	: C16H12I4NO4 : Na
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Inv. Status	: Custom Synthesis
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Levothyroxine D3

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Mol.F.	: C15H8D3I4NO4
Mol.Wt.	: 779.9
Inv. Status	: Custom Synthesis

Levothyroxine

SZ CAT No:	: SZ-L022032
CAS No	: 51-48-9
Mol.F.	: C15H11I4NO4
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Levothyroxine Impurity 5

SZ CAT No:	: SZ-L022033
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Mol.Wt.	: 636.0
Inv. Status	: In Stock

Levothyroxine Glucose Adduct

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Mol.F.	: C21H21I4NO9
Mol.Wt.	: 939.0
Inv. Status	: Out of Stock

T4-Formic acid N-methylamide

SZ CAT No:	: SZ-L022035
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Mol.Wt.	: 746.8
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Levothyroxine Impurity 6

SZ CAT No:	: SZ-L022036
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Mol.F.	: C15H11I3N2O6
Mol.Wt.	: 696.0
Inv. Status	: Custom Synthesis

N-Acetyl L-Thyroxine Ethyl Ester

SZ CAT No:	: SZ-L022037
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Mol.F.	: C19H17I4NO5
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
Inv. Status	: In Stock

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
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Mol.F.	: C9H9Cl2NO3
Mol.Wt.	: 250.1
Inv. Status	: In Stock

3,5-Dibromo-L-tyrosine

SZ CAT No:	: SZ-L022042
CAS No	: 300-38-9
Mol.F.	: C9H9Br2NO3
Mol.Wt.	: 339.0
Inv. Status	: In Stock

β-Hydroxy Thyroxine

SZ CAT No:	: SZ-L022043
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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
CAS No	: 3861-58-3
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
Rel. CAS No	: 51-48-9 (free base) ; 6106-07-6 (sodium pentahydrate)

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
Rel. CAS No	: 3571-49-1 (free base) ; 1628689-42-8 (TFA salt)

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
Rel. CAS No	: 300-30-1 (free base)

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
Rel. CAS No	: 167998-35-8 (free base)

Levothyroxine Impurity 12

SZ CAT No:	: SZ-L022053
CAS No	: 889871-36-7
Mol.F.	: C9H9ClINO3
Mol.Wt.	: 341.5
Inv. Status	: In Stock

Levothyroxine Ethyl Ester

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