TLC Standards
      
Products List (Parent drug: LEVOTHYROXINE)
Levothyroxine-13C6
13C6 C9H11I4NO4 M.W. 782.81
L-4601
Levothyroxine-13C6
Levothyroxine acyl glucuronide
CAS No. 909880-81-5
C21H19I4NO10 M.W. 953.00
L-4602
Levothyroxine acyl glucuronide
Levothyroxine phenolic glucuronide
CAS No. 21462-56-6
C21H19I4NO10 M.W. 953.00
L-4603
Levothyroxine phenolic glucuronide
Levothyroxine sulfate
CAS No. 77074-49-8
C15H11I4NO7S M.W. 856.94
L-4604
Levothyroxine sulfate
Levothyroxine Impurity 22 (O-(4-Hydroxy-3,5-diiodophenyl)-3,5-diiodo-hydroxy-l-tyrosine)
C15H11I4NO5 M.W. 792.88
L-4605
Levothyroxine Impurity 22 (O-(4-Hydroxy-3,5-diiodophenyl)-3,5-diiodo-hydroxy-l-tyrosine)
Levothyroxine Related Compound 2
CAS No. 93647-48-4
C14H8I4O5 M.W. 763.83
L-4606
Levothyroxine Related Compound 2
Levothyroxine Related Compound 3 (N-Formyl-O-(4-hydroxy-3,5-diiodophenyl)-3,5-diiodo-L-Tyrosine)
CAS No. 671235-41-9
C16H11I4NO5 M.W. 804.88
L-4607
Levothyroxine Related Compound 3 (N-Formyl-O-(4-hydroxy-3,5-diiodophenyl)-3,5-diiodo-L-Tyrosine)
Levothyroxine Related Compound 4 (2-(4-(4-Hydroxy-3,5-diiodophenoxy)-3,5-diiodophenyl)acetamide)
CAS No. 176258-88-1
C14H9I4NO3 M.W. 746.85
L-4608
Levothyroxine Related Compound 4 (2-(4-(4-Hydroxy-3,5-diiodophenoxy)-3,5-diiodophenyl)acetamide)
Levothyroxine Related Compound 5 [N-Acetyl-O-(4-Hydroxy-3,5-Diiodophenyl)-3,5-Diiodo-L-Tyrosine]
CAS No. 26041-51-0
C17H13I4NO5 M.W. 818.91
L-4609
Levothyroxine Related Compound 5 [N-Acetyl-O-(4-Hydroxy-3,5-Diiodophenyl)-3,5-Diiodo-L-Tyrosine]
2-(4-(4-Hydroxy-3,5-diiodophenoxy)-3,5-diiodophenyl)acetic acid
C14H8I4O4 M.W. 747.84
L-4610
2-(4-(4-Hydroxy-3,5-diiodophenoxy)-3,5-diiodophenyl)acetic acid
Levothyroxine EP Impurity I (4-(4-Hydroxy-3,5-diiodophenoxy)-3,5-diiodobenzaldehyde)
CAS No. 2016-06-0
C13H6I4O3 M.W. 717.81
L-4611
Levothyroxine EP Impurity I (4-(4-Hydroxy-3,5-diiodophenoxy)-3,5-diiodobenzaldehyde)
Levothyroxine EP Impurity H
CAS No. 2055-97-2
C13H6I4O4 M.W. 733.80
L-4612
Levothyroxine EP Impurity H
Levothyroxine Impurity 21
CAS No. 107849-54-7
C15H11I4NO5 M.W. 792.87
L-4613
Levothyroxine Impurity 21
Levothyroxine EP Impurity F
CAS No. 911661-90-0
C21H13I6NO5 M.W. 1120.76
L-4614
Levothyroxine EP Impurity F
Levothyroxine N-Methylamine
C16H14I4N2O3 M.W. 789.92
L-4615
Levothyroxine N-Methylamine
N-Methylamide Levothyroxine
C16H14I4N2O3 M.W. 789.92
L-4616
N-Methylamide Levothyroxine
3,5-Diiodo-L-tyrosine
C9H9I2NO3 M.W. 432.99
L-4617
3,5-Diiodo-L-tyrosine
Levothyroxine Related Compound 6
CAS No. 153324-21-1
C13H13I2NO5 M.W. 517.06
L-4618
Levothyroxine Related Compound 6
Levothyroxine Related Compound 1 (N-Acetyl-3,5-Diiodo-L-Tyrosine)
CAS No. 1027-28-7
C11H11I2NO4 M.W. 475.02
L-4619
Levothyroxine Related Compound 1 (N-Acetyl-3,5-Diiodo-L-Tyrosine)
Levothyroxine Related Compound 7
CAS No. 56460-41-4
C12H13I2NO4 M.W. 489.05
L-4620
Levothyroxine Related Compound 7
Bis(p-anisyl)iodonium bromide
C14H14IO2.Br M.W. 341.17 79.90
L-4621
Bis(p-anisyl)iodonium bromide
Levothyroxine Related Compound 8 (2-Acetamido-3-(3,5-diiodo-4-(4-methoxyphenoxy)phenyl) Propanoic Acid)
CAS No. 886203-79-8
C18H17I2NO5 M.W. 581.15
L-4622
Levothyroxine Related Compound 8 (2-Acetamido-3-(3,5-diiodo-4-(4-methoxyphenoxy)phenyl) Propanoic Acid)
Levothyroxine Related Compound 9 (2-Amino-3(3-bromo-4-(4-hydroxyphenoxy)-5-iodophenyl)propanoic Acid
C15H13BrINO4 M.W. 478.08
L-4623
Levothyroxine Related Compound 9 (2-Amino-3(3-bromo-4-(4-hydroxyphenoxy)-5-iodophenyl)propanoic Acid
Levothyroxine Related Compound 10
CAS No. 94345-95-6
C16H15I2NO4 M.W. 539.11
L-4624
Levothyroxine Related Compound 10
Levothyroxine Related Compound 11
C19H19I2NO5 M.W. 595.17
L-4625
Levothyroxine Related Compound 11
Levothyroxine EP Impurity B
CAS No. 1628720-66-0
C15H11ClI3NO4 M.W. 685.42
L-4626
Levothyroxine EP Impurity B
rac-Levothyroxine EP Impurity J (rac-3,3'-DL-Diiodothyronine)
CAS No. 70-40-6
C15H13I2NO4 M.W. 525.08
L-4627
rac-Levothyroxine EP Impurity J (rac-3,3-DL-Diiodothyronine)
Levothyroxine Impurity K
CAS No. 5817-39-0
C15H12I3NO4 M.W. 650.98
L-4628
Levothyroxine Impurity K
Levothyroxine Impurity C
CAS No. 51-24-1
C14H9I3O4 M.W. 621.94
L-4629
Levothyroxine Impurity C
Levothyroxine Impurity 10
CAS No. 909279-46-5
C15H11ClI3NO4 M.W. 685.43
L-4631
Levothyroxine Impurity 10
Levothyroxine-13C9-15N
CAS No. 1431868-11-9
13C9 15N C6H11I4O4 M.W. 786.80
L-4632
Levothyroxine-13C9-15N
Levothyroxine Impurity 11
CAS No. 1155-40-4
C14H10I2O4 M.W. 496.04
L-4633
Levothyroxine Impurity 11
Levothyroxine Impurity 12
CAS No. 176258-89-2
C14H10I4O2 M.W. 717.85
L-4634
Levothyroxine Impurity 12
Levothyroxine Impurity 14
CAS No. 854646-83-6
C8H7I2NO3 M.W. 418.96
L-4636
Levothyroxine Impurity 14
Levothyroxine Impurity 15
C19H19I2NO5 M.W. 595.17
L-4637
Levothyroxine Impurity 15
Levothyroxine Impurity 16
CAS No. 3006-01-7
C19H18I3NO5 M.W. 721.07
L-4638
Levothyroxine Impurity 16
Levothyroxine Impurity 17
CAS No. 3914-31-6
C15H11I3O4 M.W. 635.96
L-4639
Levothyroxine Impurity 17
Levothyroxine Impurity 18
C25H19I6NO6 M.W. 1190.85
L-4640
Levothyroxine Impurity 18
Levothyroxine Impurity 19
C15H10I3NO5 M.W. 664.96
L-4641
Levothyroxine Impurity 19
Levothyroxine Impurity 20
C15H13I4NO2 M.W. 746.89
L-4642
Levothyroxine Impurity 20
Levothyroxine Glucose Adduct
C21H21I4NO9 M.W. 939.02
L-4643
Levothyroxine Glucose Adduct
Levothyroxine Lactose Adduct
C27H31I4NO14 M.W. 1101.16
L-4644
Levothyroxine Lactose Adduct
Levothyroxine Impurity 23
C21H14I5NO5 M.W. 994.87
L-4645
Levothyroxine Impurity 23
Levothyroxine Impurity 24
C15H11I4NO4 M.W. 776.87
L-4646
Levothyroxine Impurity 24
Levothyroxine Impurity 25
C21H14I5NO5 M.W. 994.87
L-4647
Levothyroxine Impurity 25
Levothyroxine Impurity 26
C14H9I4NO3 M.W. 746.85
L-4648
Levothyroxine Impurity 26
Levothyroxine Impurity 27
C29H13I8NO6 M.W. 1486.66
L-4649
Levothyroxine Impurity 27
Levothyroxine Impurity 28
C15H12I3NO5 M.W. 666.98
L-4650
Levothyroxine Impurity 28
Levothyroxine Impurity 29
CAS No. 2055-94-9
C13H8I4O3 M.W. 719.82
L-4651
Levothyroxine Impurity 29
Levothyroxine Impurity 30 Sodium Salt
C16H12I4NO4. Na M.W. 789.90 22.99
L-4652
Levothyroxine Impurity 30 Sodium Salt
Levothyroxine Impurity 31
C18H16I4N2O5 M.W. 847.95
L-4653
Levothyroxine Impurity 31
Levothyroxine Impurity 32
C30H22I6N2O8 M.W. 1299.94
L-4654
Levothyroxine Impurity 32
Levothyroxine Impurity 33
C30H23I5N2O8 M.W. 1174.04
L-4655
Levothyroxine Impurity 33
Levothyroxine Impurity 34
C30H23I5N2O8 M.W. 1174.04
L-4656
Levothyroxine Impurity 34
Levothyroxine Impurity 35
C30H22I6N2O8 M.W. 1299.94
L-4657
Levothyroxine Impurity 35
Levothyroxine Impurity 36
C30H21I7N2O8 M.W. 1425.84
L-4658
Levothyroxine Impurity 36
Levothyroxine Impurity 37
C21H15I4NO5 M.W. 868.97
L-4659
Levothyroxine Impurity 37
Levothyroxine Impurity 39
C44H30I10N2O10 M.W. 2015.77
L-4660
Levothyroxine Impurity 39
Levothyroxine Impurity 40
C28H16I7NO7 M.W. 1366.77
L-4661
Levothyroxine Impurity 40
Levothyroxine Impurity 41
C28H16I7NO7 M.W. 1366.77
L-4662
Levothyroxine Impurity 41
Levothyroxine Impurity 42
C29H17I8NO8 M.W. 1522.69
L-4663
Levothyroxine Impurity 42
Levothyroxine Impurity 43
C29H17I8NO8 M.W. 1522.69
L-4664
Levothyroxine Impurity 43
Levothyroxine Lactose adduct 2 (Amadori Rearrangement Product)
C27H31I4NO14 M.W. 1101.16
L-4665
Levothyroxine Lactose adduct 2 (Amadori Rearrangement Product)
Levothyroxine Impurity 44
C15H10I4O5 M.W. 777.86
L-4666
Levothyroxine Impurity 44