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Levothyroxine N-Formyl-T4 Impurity (USP)

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Chemical Name: N-Formyl-O-(4-hydroxy-3,5-diiodophenyl)-3,5-diiodo-l-tyrosine (as per USP)
Synonym: N-Formyl-T4 (USP)
CAT No: VS-L041015
CAS No: 671235-41-9
Mol.F. C16H11I4NO5
Mol.Wt.: 804.9
Status: Custom Synthesis


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Levothyroxine

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CAT No: VS-L041000
CAS No: 51-48-9
Mol.F.: C15H11I4NO4
Mol.Wt.: 776.9
Status: Custom Synthesis

Levothyroxine Sodium Hydrate

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CAT No: VS-L041001
CAS No: 25416-65-3
Mol.F.: C15H10I4NNaO4 : 5(H2O)
Mol.Wt.: 798.9 : 5(18.0)
Status: Custom Synthesis

Levothyroxine EP Impurity A

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CAT No: VS-L041002
CAS No: 55-06-1
Mol.F.: C15H11I3NO4 : Na
Mol.Wt.: 650.0 : 23.0
Status: Custom Synthesis

Levothyroxine EP Impurity B

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CAT No: VS-L041003
CAS No: 1628720-66-0
Mol.F.: C15H11ClI3NO4
Mol.Wt.: 685.4
Status: Custom Synthesis

Levothyroxine EP Impurity C

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CAT No: VS-L041004
CAS No: 51-24-1
Mol.F.: C14H9I3O4
Mol.Wt.: 621.9
Status: Custom Synthesis

Levothyroxine EP Impurity D

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CAT No: VS-L041005
CAS No: 67-30-1
Mol.F.: C14H8I4O4
Mol.Wt.: 747.8
Status: Custom Synthesis

Levothyroxine EP Impurity E

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CAT No: VS-L041006
CAS No: 1041-01-6
Mol.F.: C15H13I2NO4
Mol.Wt.: 525.1
Status: In Stock

Levothyroxine EP Impurity F

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CAT No: VS-L041007
CAS No: 911661-90-0
Mol.F.: C21H13I6NO5
Mol.Wt.: 1120.7
Status: Custom Synthesis

Levothyroxine EP Impurity H 

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CAT No: VS-L041008
CAS No: 2055-97-2
Mol.F.: C13H6I4O4
Mol.Wt.: 733.8
Status: Custom Synthesis

Levothyroxine EP Impurity I

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CAT No: VS-L041009
CAS No: 2016-06-0
Mol.F.: C13H6I4O3
Mol.Wt.: 717.8
Status: Custom Synthesis

Levothyroxine EP Impurity J

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CAT No: VS-L041010
CAS No: 4604-41-5
Mol.F.: C15H13I2NO4
Mol.Wt.: 525.1
Status: Custom Synthesis

Levothyroxine EP Impurity k

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CAT No: VS-L041011
CAS No: 5817-39-0
Mol.F.: C15H12I3NO4
Mol.Wt.: 650.9
Status: Custom Synthesis

Levothyroxine USP Sodium

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CAT No: VS-L041012
CAS No: N/A
Mol.F.: C15H10I4NO4 : Na : x(H2O)
Mol.Wt.: 775.9 : 23.0 : x(18.0)
Status: Custom Synthesis

Levothyroxine USP A

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CAT No: VS-L041013
CAS No: N/A
Mol.F.: C15H11I4NO5
Mol.Wt.: 792.9
Status: Custom Synthesis

Levothyroxine T4-Hydroxyacetic Acid

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CAT No: VS-L041014
CAS No: 93647-48-4
Mol.F.: C14H8I4O5
Mol.Wt.: 763.8
Status: Custom Synthesis

Levothyroxine N-Formyl-T4 Impurity (USP)

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CAT No: VS-L041015
CAS No: 671235-41-9
Mol.F.: C16H11I4NO5
Mol.Wt.: 804.9
Status: Custom Synthesis

Levothyroxine USP D

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CAT No: VS-L041016
CAS No: N/A
Mol.F.: C14H9I4NO3
Mol.Wt.: 746.9
Status: Custom Synthesis

Levothyroxine N-Acetyl Impurity

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CAT No: VS-L041017
CAS No: 26041-51-0
Mol.F.: C17H13I4NO5
Mol.Wt.: 818.9
Status: Custom Synthesis

Levothyroxine Hydroxyphenoxy Aldehyde Impurity

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CAT No: VS-L041018
CAS No: 2828-49-1
Mol.F.: C13H8I2O3
Mol.Wt.: 466
Status: Custom Synthesis

Levothyroxine Methoxyphenoxy Aldehyde Impurity

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CAT No: VS-L041019
CAS No: 69240-57-9
Mol.F.: C14H10I2O3
Mol.Wt.: 480
Status: Custom Synthesis

Levothyroxine Ethyl Ester

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CAT No: VS-L041020
CAS No: 76353-71-4
Mol.F.: C17H15I4NO4
Mol.Wt.: 804.9
Status: Custom Synthesis

Levothyroxine Methyl Ester

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CAT No: VS-L041021
CAS No: 32180-11-3
Mol.F.: C16H13I4NO4
Mol.Wt.: 790.9
Status: Custom Synthesis

Levothyroxine Monochloro Impurity

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CAT No: VS-L041022
CAS No: 909279-46-5
Mol.F.: C15H11ClI3NO4
Mol.Wt.: 685.4
Status: Custom Synthesis

Levothyroxine N-Methylamide (USP)

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CAT No: VS-L041023
CAS No: 2088032-52-2
Mol.F.: C16H14I4N2O3
Mol.Wt.: 789.9
Status: Custom Synthesis

Levothyroxine D-Isomer

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CAT No: VS-L041024
CAS No: 51-49-0
Mol.F.: C15H11I4NO4
Mol.Wt.: 776.9
Status: Custom Synthesis

Levothyroxine O-Methyl Amine Impurity

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CAT No: VS-L041025
CAS No: 2230724-39-5
Mol.F.: C15H13I4NO2
Mol.Wt.: 746.9
Status: Custom Synthesis

3,5,3',5'-Tetraiodo thyrolactic acid

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CAT No: VS-L041026
CAS No: 7069-47-8
Mol.F.: C15H10I4O5
Mol.Wt.: 777.9
Status: Custom Synthesis

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

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CAT No: VS-L041027
CAS No: 94345-95-6
Mol.F.: C16H15I2NO4
Mol.Wt.: 539.1
Status: Custom Synthesis

Levothyroxine Glucose Adduct

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CAT No: VS-L041028
CAS No: N/A
Mol.F.: C21H21I4NO9
Mol.Wt.: 939
Status: Custom Synthesis

T4-Formic acid N-methylamide

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CAT No: VS-L041029
CAS No: 2088032-78-2
Mol.F.: C14H9I4NO3
Mol.Wt.: 746.8
Status: Custom Synthesis

N-Acetyl L-thyroxine ethyl ester

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CAT No: VS-L041030
CAS No: 30804-52-5
Mol.F.: C19H17I4NO5
Mol.Wt.: 847
Status: Custom Synthesis

3-Bromo-L-thyroxine

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CAT No: VS-L041031
CAS No: 1798894-90-2
Mol.F.: C15H11BrI3NO4
Mol.Wt.: 729.9
Status: Custom Synthesis

Liothyronine Maillard Lactose Impurity

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CAT No: VS-L041032
CAS No: N/A
Mol.F.: C27H32I3NO14
Mol.Wt.: 975.3
Status: Custom Synthesis

Levothyroxine Mannitol Adduct

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CAT No: VS-L041033
CAS No: N/A
Mol.F.: C21H23I4NO9
Mol.Wt.: 941
Status: Custom Synthesis

β-Hydroxy Thyroxine

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CAT No: VS-L041034
CAS No: 107849-54-7
Mol.F.: C15H11I4NO5
Mol.Wt.: 792.9
Status: Custom Synthesis

Levothyroxine Lactose Adduct

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CAT No: VS-L041035
CAS No: N/A
Mol.F.: C27H32I3NO14
Mol.Wt.: 975.3
Status: Custom Synthesis

Levothyroxine Impurity 1

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CAT No: VS-L041036
CAS No: 2055-94-9
Mol.F.: C13H8I4O3
Mol.Wt.: 719.8
Status: Custom Synthesis

Levothyroxine Impurity 2

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CAT No: VS-L041037
CAS No: 176258-89-2
Mol.F.: C14H10I4O2
Mol.Wt.: 717.9
Status: Custom Synthesis

Levothyroxine Impurity 3

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CAT No: VS-L041038
CAS No: 854646-83-6
Mol.F.: C8H7I2NO3
Mol.Wt.: 419
Status: Custom Synthesis

Levothyroxine Impurity 4

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CAT No: VS-L041039
CAS No: N/A
Mol.F.: C16H12I4NO4 : Na
Mol.Wt.: 789.9 : 23.0
Status: Custom Synthesis

Levothyroxine Impurity 5

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CAT No: VS-L041040
CAS No: 51-26-3
Mol.F.: C15H11I3O4
Mol.Wt.: 636
Status: Custom Synthesis

Levothyroxine Impurity 6

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CAT No: VS-L041041
CAS No: 105172-64-3
Mol.F.: C15H11I3N2O6
Mol.Wt.: 696
Status: Custom Synthesis

Levothyroxine Impurity 7

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CAT No: VS-L041042
CAS No: 300-38-9
Mol.F.: C9H9Br2NO3
Mol.Wt.: 339
Status: Custom Synthesis

Levothyroxine Impurity 8

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CAT No: VS-L041043
CAS No: 15106-62-4
Mol.F.: C9H9Cl2NO3
Mol.Wt.: 250.1
Status: Custom Synthesis

3,3’,5-Triiodo-D-thyronine

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CAT No: VS-L041044
CAS No: 5714-08-9
Mol.F.: C15H12I3NO4
Mol.Wt.: 651.01
Status: Custom Synthesis

N-Formyl Thyroxine-13C6

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CAT No: VS-L041045
CAS No: 1346604-89-4
Mol.F.: C16H11I4NO5
Mol.Wt.: 810.84
Status: Custom Synthesis

T4-Acetamide

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CAT No: VS-L041046
CAS No: 176258-88-1
Mol.F.: C14H9I4NO3
Mol.Wt.: 746.8
Status: Custom Synthesis

LEVOTHYROXINE GALLIC ACID ADDUCT

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CAT No: VS-L041047
CAS No: NA
Mol.F.: C22H15I4NO8
Mol.Wt.: 928.97
Status: Custom Synthesis

Levothyroxine stearic acid impurity 1

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CAT No: VS-L041048
CAS No: NA
Mol.F.: C33H45I4NO5
Mol.Wt.: 1043.34
Status: Custom Synthesis

Levothyroxine stearic acid impurity 2

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CAT No: VS-L041049
CAS No: NA
Mol.F.: C33H45I4NO5
Mol.Wt.: 1043.33
Status: Custom Synthesis
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