Levothyroxine

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Pharmaceutical Reference Standards

Levothyroxine

CAT. No.	CP-L18000
CAS. No.	51-48-9
Mol. F.	C15H11I4NO4
Mol. Wt.	776.87
Stock Status:	In Stock

Rel. Cas No: 55-03-8 (Na salt) ; 6106-07-6 (sodium pentahydrate)

Levothyroxine EP Impurity A

CAT. No.	CP-L18001
CAS. No.	55-06-1
Mol. F.	C15H11I3NNaO4
Mol. Wt.	672.96
Stock Status:	In Stock

Rel. Cas No: 6893-02-3 (free base)

Levothyroxine EP Impurity C

CAT. No.	CP-L18003
CAS. No.	51-24-1
Mol. F.	C14H9I3O4
Mol. Wt.	621.93
Stock Status:	In Stock

Levothyroxine EP Impurity D

CAT. No.	CP-L18004
CAS. No.	67-30-1
Mol. F.	C14H8I4O4
Mol. Wt.	747.82
Stock Status:	In Stock

Levothyroxine EP Impurity E

CAT. No.	CP-L18005
CAS. No.	1041-01-6
Mol. F.	C15H13I2NO4
Mol. Wt.	525.08
Stock Status:	Custom Synthesis

Levothyroxine EP Impurity F

CAT. No.	CP-L18006
CAS. No.	911661-90-0
Mol. F.	C21H13I6NO5
Mol. Wt.	1120.76
Stock Status:	In Stock

Levothyroxine EP Impurity G

CAT. No.	CP-L18007
CAS. No.	2230724-39-5
Mol. F.	C15H13I4NO2
Mol. Wt.	746.89
Stock Status:	In Stock

Levothyroxine EP Impurity H

CAT. No.	CP-L18008
CAS. No.	2055-97-2
Mol. F.	C13H6I4O4
Mol. Wt.	733.80
Stock Status:	In Stock

Levothyroxine EP Impurity I

CAT. No.	CP-L18009
CAS. No.	2016-06-0
Mol. F.	C13H6I4O3
Mol. Wt.	717.8
Stock Status:	In Stock

Levothyroxine N-Formyl Impurity

CAT. No.	CP-L18013
CAS. No.	671235-41-9
Mol. F.	C16H11I4NO5
Mol. Wt.	804.88
Stock Status:	In Stock

Levothyroxine N-Acetyl Impurity

CAT. No.	CP-L18014
CAS. No.	26041-51-0
Mol. F.	C17H13I4NO5
Mol. Wt.	818.91
Stock Status:	In Stock

Levothyroxine T4-Acetamide

CAT. No.	CP-L18016
CAS. No.	176258-88-1
Mol. F.	C14H9I4NO3
Mol. Wt.	746.84
Stock Status:	In Stock

Levothyroxine N-Methylamide

CAT. No.	CP-L18017
CAS. No.	2088032-52-2
Mol. F.	C16H14I4N2O3
Mol. Wt.	789.91
Stock Status:	In Stock

Levothyroxine-lactose maillard impurity

CAT. No.	CP-L18020
CAS. No.	NA
Mol. F.	C27H31I4NO14
Mol. Wt.	1101.16
Stock Status:	In Stock

β-Hydroxy Thyroxine

CAT. No.	CP-L18021
CAS. No.	107849-54-7
Mol. F.	C15H11I4NO5
Mol. Wt.	792.87
Stock Status:	In Stock

Levothyroxine Methyl Ester

CAT. No.	CP-L18022
CAS. No.	32180-11-3
Mol. F.	C16H13I4NO4
Mol. Wt.	790.90
Stock Status:	In Stock

Levothyroxine Hydroxyphenoxy Aldehyde Impurity

CAT. No.	CP-L18023
CAS. No.	2828-49-1
Mol. F.	C13H8I2O3
Mol. Wt.	466.01
Stock Status:	Custom Synthesis

Levothyroxine Methoxyphenoxy Aldehyde Impurity

CAT. No.	CP-L18024
CAS. No.	69240-57-9
Mol. F.	C14H10I2O3
Mol. Wt.	480.04
Stock Status:	Custom Synthesis

Levothyroxine Monochloro Impurity

CAT. No.	CP-L18025
CAS. No.	909279-46-5
Mol. F.	C15H11ClI3NO4
Mol. Wt.	685.42
Stock Status:	Custom Synthesis

Levothyroxine Glucose Adduct

CAT. No.	CP-L18026
CAS. No.	NA
Mol. F.	C21H21I4NO9
Mol. Wt.	939.01
Stock Status:	Custom Synthesis

Levothyroxine Mannitol Adduct

CAT. No.	CP-L18028
CAS. No.	NA
Mol. F.	C21H23I4NO9
Mol. Wt.	941.03
Stock Status:	Custom Synthesis

Levothyroxine Lactose Adduct

CAT. No.	CP-L18029
CAS. No.	NA
Mol. F.	C27H32I3NO14
Mol. Wt.	975.3
Stock Status:	Custom Synthesis

Levothyroxine Impurity 9

CAT. No.	CP-L18030
CAS. No.	3861-58-3
Mol. F.	C7H4INO4
Mol. Wt.	293.02
Stock Status:	Custom Synthesis

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

CAT. No.	CP-L18031
CAS. No.	7069-47-8
Mol. F.	C15H10I4O5
Mol. Wt.	777.86
Stock Status:	Custom Synthesis

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

CAT. No.	CP-L18032
CAS. No.	94345-95-6
Mol. F.	C16H15I2NO4
Mol. Wt.	539.11
Stock Status:	Custom Synthesis

T4-Formic acid N-methylamide

CAT. No.	CP-L18033
CAS. No.	2088032-78-2
Mol. F.	C14H9I4NO3
Mol. Wt.	746.85
Stock Status:	Custom Synthesis

N-Acetyl L-thyroxine ethyl ester

CAT. No.	CP-L18034
CAS. No.	30804-52-5
Mol. F.	C19H17I4NO5
Mol. Wt.	846.96
Stock Status:	Custom Synthesis

N-ethylamide Levothyroxine

CAT. No.	CP-L18035
CAS. No.	NA
Mol. F.	C17H16I4N2O3
Mol. Wt.	803.73
Stock Status:	In Stock

Levothyroxine sodium butyl ester impurity

CAT. No.	CP-L18036
CAS. No.	NA
Mol. F.	C20H19I4O4 : Na
Mol. Wt.	830.99 : 23.0
Stock Status:	Custom Synthesis

Levothyroxine Sodium

CAT. No.	CP-L18037
CAS. No.	55-03-8
Mol. F.	C15H10I4NO4 : Na
Mol. Wt.	775.87 : 23.0
Stock Status:	Custom Synthesis

Rel. Cas No: 51-48-9 (free base) ; 6106-07-6 (sodium pentahydrate)

a b c d e f g h i j k l m n o p q r s t u v w x y z

Levothyroxine

Pharmaceutical Reference Standards

Levothyroxine

Levothyroxine EP Impurity A

Levothyroxine EP Impurity C

Levothyroxine EP Impurity D

Levothyroxine EP Impurity E

Levothyroxine EP Impurity F

Levothyroxine EP Impurity G

Levothyroxine EP Impurity H

Levothyroxine EP Impurity I

Levothyroxine N-Formyl Impurity

Levothyroxine N-Acetyl Impurity

Levothyroxine T4-Acetamide

Levothyroxine N-Methylamide

Levothyroxine-lactose maillard impurity

β-Hydroxy Thyroxine

Levothyroxine Methyl Ester

Levothyroxine Hydroxyphenoxy Aldehyde Impurity

Levothyroxine Methoxyphenoxy Aldehyde Impurity

Levothyroxine Monochloro Impurity

Levothyroxine Glucose Adduct

Levothyroxine Mannitol Adduct

Levothyroxine Lactose Adduct

Levothyroxine Impurity 9

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

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

T4-Formic acid N-methylamide

N-Acetyl L-thyroxine ethyl ester

N-ethylamide Levothyroxine

Levothyroxine sodium butyl ester impurity

Levothyroxine Sodium

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