Levothyroxine > Impurities > 19

Structure Compound Pricing
T4-Formic Acid-N-methylamide
CS-T-87948 > Impurities

Molecular Formula : C14H9I4NO3   Molecular Weight: 746.84   CAS Number: 2088032-78-2
Synonyms : 4-(4-Hydroxy-3,5-diiodophenoxy)-3,5-diiodo-N-methylbenzamide;
Parent API : Levothyroxine
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a-Hydroxy-4-(4-hydroxy-3,5-diiodophenoxy)-3,5-diiodo-N-methyl-benzeneacetamide
CS-T-78995 > Impurities

Molecular Formula : C15H11I4NO4   Molecular Weight: 776.87   CAS Number: 2088032-68-0  
Parent API : Levothyroxine
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Levothyroxine EP Impurity E
CS-T-19369 > Impurities

Molecular Formula : C15H13I2NO4   Molecular Weight: 525.08   CAS Number: 1041-01-6
Synonyms : O-(4-Hydroxyphenyl)-3,5-diiodo-L-tyrosine; 3,5-Diiodo-L-thyronine ; (2S)-2-Amino-3-[4-(4-hydroxyphenoxy)-3,5-diiodophenyl]-propanoic acid;CS-P-00151
Parent API : Levothyroxine
USD 182.00 / 10mg
USD 274.00 / 25mg
USD 410.00 / 50mg
Levothyroxine EP Impurity B
CS-O-15811 > Impurities

Molecular Formula : C15H11ClI3NO4   Molecular Weight: 685.42   CAS Number: 1628720-66-0
Synonyms : Levothyroxine Chloro Impurity;3-Chloro Thyroxine;(2S)-2-Amino-3-[4-(3-chloro-4-hydroxy-5-iodophenoxy)-3,5-diiodophenyl] propanoic acid
Parent API : Levothyroxine
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Levothyroxine EP Impurity K
CS-O-14067 > Impurities

Molecular Formula : C15H12I3NO4   Molecular Weight: 650.97   CAS Number: 5817-39-0
Synonyms : Levothyroxine EP Impurity K;Reverse T3;3,3,5-Triiodo-L-thyronine;Reverse Thyonine;4-(4-hydroxy-3,5-diiodophenoxy)-3,5-diiodobenzoic acid;Reverse triiodothyronine;3,3,5-Triiodo-L-thyronine;5-Triiodothyronine;Triiodothyronine, reverse; (S)-2-Amino-3-(4-(4-hydroxy-3,5-diiodophenoxy)-3-iodophenyl)propanoic acid.
Parent API : Levothyroxine
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Levothyroxine Monochloro Impurity
CS-O-16035 > Impurities

Molecular Weight: 685.42   CAS Number: 909279-46-5
Synonyms : Monochloro Triiodo Thyronine (USP) ; (S)-2-Amino-3-[3-chloro-4-(4-hydroxy-3,5-diiodophenoxy)-5-iodophenyl] propanoic acid; (S)-2-amino-3-(3-chloro-4-(4-hydroxy-3,5-diiodophenoxy)-5-iodophenyl)propanoic acid
Parent API : Levothyroxine
USD 426.00 / 10mg
USD 638.00 / 25mg
USD 958.00 / 50mg
Levothyroxine Sodium EP Impurity J
CS-I-00089 > Impurities

Molecular Formula : C15H13I2NO4   Molecular Weight: 525   CAS Number: 70-40-6
Synonyms : Levothyroxine Sodium EP Impurity J;L-3,3- Diiodothyronine;L-3,3- Diiodothyronine; (2S)-2-amino-3-[4-(4-hydroxy-3-iodophenoxy)-3-iodophenyl]propanoic acid;Alanine, 3-[4-(4-hydroxy-3-iodophenoxy)-3-iodophenyl]-, L- (8CI);(2S)-2-amino-3-[4-(4-hydroxy-3-iodophenoxy)-3-iodophenyl]propanoic acid.
Parent API : Levothyroxine
USD 426.00 / 10mg
USD 638.00 / 25mg
USD 958.00 / 50mg
O-Methyl-T4-Amine
CS-O-16036 > Impurities

Molecular Formula : C15H13I4NO2   Molecular Weight: 746.89   CAS Number: NA
Synonyms : T4-amine O-methyl; O-Methyl-Tetraiodothyroethylamine (USP); 2-[4-(3,5-Diiodo-4-methoxyphenoxy)-3,5-diiodophenyl]ethanamine; Levothyroxine O-Methyl Amine Impurity; Thyroxine Related Compound 1
Parent API : Levothyroxine
USD 912.00 / 10mg
USD 1,368.00 / 25mg
USD 2,052.00 / 50mg
Levothyroxine- Impurity 5
CS-DN-00016 > Impurities

Molecular Formula : C15H13I4NO2   Molecular Weight: 746.89   CAS Number: NA
Synonyms : 2-(4-(3,5-diiodo-4-methoxyphenoxy)-3,5-diiodophenyl)ethanamine
Parent API : Levothyroxine
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Levothyroxine N- formamide Impurity
CS-DN-00017 > Impurities

Molecular Formula : C16H11I4NO5   Molecular Weight: 804.88   CAS Number: NA
Synonyms : (S)-2-formamido-3-(4-(4-hydroxy-3,5-diiodophenoxy)-3,5-diiodophenyl)propanoicacid
Parent API : Levothyroxine
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Levothyroxine EP Impurity J
CS-T-53273 > Impurities

Molecular Formula : C15H13I2NO4   Molecular Weight: 525.08   CAS Number: 4604-41-5
Synonyms : 3,3'-Diiodo-L-thyronine
Parent API : Levothyroxine
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Levothyroxine Lactose Adduct
CS-P-08082 > Impurities

Molecular Formula : C27H31I4NO14   Molecular Weight: 1101.16   CAS Number: NA
Synonyms : (S)-2-(((2R,3R,4R,5S,6R)-3,4-Dihydroxy-6-(hydroxymethyl)-5-(((2S,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)tetrahydro-2H-pyran-2-yl)amino)-3-(4-(4-hydroxy-3,5-diiodophenoxy)-3,5-diiodophenyl)propanoicacid
Parent API : Levothyroxine
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Liothyronine EP Impurity D
CS-T-43890 > Impurities

Molecular Formula : C14H8I4O4   Molecular Weight: 747.83   CAS Number: 67-30-1
Synonyms : 4-(4-Hydroxy-3,5-diiodophenoxy)-3,5-diiodobenzeneacetic Acid; 3,5,3',5'-Tetraiodo Thyroacetic Acid; Levothyroxine EP Impurity D
Parent API : Levothyroxine
USD 274.00 / 10mg
USD 410.00 / 25mg
USD 616.00 / 50mg
Levothyroxine EP Impurity I
CS-T-43892 > Impurities

Molecular Formula : C13H6I4O3   Molecular Weight: 717.8   CAS Number: 2016-06-0
Synonyms : 4-(4-Hydroxy-3,5-diiodophenoxy)-3,5-diiodobenzaldehyde; 3,5,3',5'-Tetraiodo Thyroaldehyde
Parent API : Levothyroxine
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Levothyroxine EP Impurity H
CS-T-43894 > Impurities

Molecular Formula : C13H6I4O4   Molecular Weight: 733.8   CAS Number: 2055-97-2
Synonyms : 4-(4-Hydroxy-3,5-diiodophenoxy)-3,5-diiodobenzoic Acid; 3,3',5,5'-Tetraiodo Thyroformic Acid.
Parent API : Levothyroxine
USD 426.00 / 10mg
USD 638.00 / 25mg
USD 958.00 / 50mg
Liothyronine EP Impurity C
CS-T-45488 > Impurities

Molecular Formula : C14H9I3O4   Molecular Weight: 621.93   CAS Number: 51-24-1
Synonyms : 4-(4-Hydroxy-3-iodophenoxy)-3,5-diiodobenzeneacetic Acid; 3,3',5-Triiodo Thyroacetic Acid;CS-P-00149; Levothyroxine EP Impurity C
Parent API : Levothyroxine
USD 274.00 / 10mg
USD 410.00 / 25mg
USD 616.00 / 50mg
Levothyroxine Related Compound 10
CS-P-08124 > Impurities

Molecular Formula : C16H15I2NO4   Molecular Weight: 539.11   CAS Number: 94345-95-6
Synonyms : L-Tyrosine,3,5-diiodo-o-(4-Methoxyphenyl); 2-Amino-3-(3,5-diiodo-4-(4-methoxyphenoxy)phenyl)propanoic acid
Parent API : Levothyroxine
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Levothyroxine Impurity 30 Sodium Salt
CS-P-08125 > Impurities

Molecular Formula : C16H13I4NO4. Na   Molecular Weight: 812.88   CAS Number: NA
Synonyms : 3,5-Diiodo-O-(3,5-diiodo (4-methoxyphenyl))-L-tyrosine. sodium salt
Parent API : Levothyroxine
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3-Bromo-L-thyroxine
CS-T-93287 > Impurities

Molecular Formula : C15H11BrI3NO4   Molecular Weight: 729.87   CAS Number: 1798894-90-2
Synonyms : (S)-2-amino-3-(3-bromo-4-(4-hydroxy-3,5-diiodophenoxy)-5-iodophenyl)propanoic acid; Levothyroxine Monobromo-triiodothyronine; 3-​bromo-​O-​(4-​hydroxy-​3,​5-​diiodophenyl)​-​5-​iodo-L-​Tyrosine
Parent API : Levothyroxine
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