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| Product | Description | |
|---|---|---|
| Levothyroxine Impurity 10 | a chlorinated derivative of 3,3',5'-Triiodo-L-thyronine. Synonyms: 3-Chloro-3',5,5'-triiodo-L-thyronine; 3-[3-Chloro-4(4-hydroxy-3,5-diodophenoxy)-5-iodopheyl]-L-Alanine. Grades: > 95%. CAS No. 909279-46-5. Molecular formula: C15H11ClI3NO4. Mole weight: 685.43. |  |
| Levothyroxine Impurity 11 | The acetic acid analog of Thyroxine. A potent Thyroxine impurity. Synonyms: 3,5-Diiodo Thyroacetic Acid; 4-(4-Hydroxyphenoxy)-3,5-diiodobenzeneacetic Acid. Grades: > 95%. CAS No. 1155-40-4. Molecular formula: C14H10I2O4. Mole weight: 496.04. | |
| Levothyroxine impurity 3 | Levothyroxine impurity 3. Uses: For analytical and research use. Group: Impurity standards. CAS No. 107849-54-7. Molecular formula: C15H11I4NO5. Mole weight: 792.87. Catalog: APB107849547. |  |
| Levothyroxine Impurity B | an impurity of Thyroxine. Synonyms: O-(4-Hydroxy-3-chloro-5-iodophenyl)-3,5-diiodo-L-tyrosine; (2S)-2-Amino-3-[4-(3-chloro-4-hydroxy-5-iodophenoxy)-3,5-diiodophenyl]propanoic Acid; 3-Chloro Thyroxine. Grades: > 95%. CAS No. 1628720-66-0. Molecular formula: C15H11ClI3NO4. Mole weight: 685.43. | |
| Levothyroxine EP Impurity E | Levothyroxine EP Impurity E. Uses: For analytical and research use. Group: Impurity standards. CAS No. 1041-01-6. Molecular formula: C15H13I2NO4. Mole weight: 525.08. Catalog: APB1041016. | |
| 2- (2-Hydroxy-2- (4- (4-hydroxy-3, 5-diiodophenoxy) -3, 5-diiodophenyl) acetamido) -3- (4- (4-hydroxy-3, 5-diiodophenoxy) -3, 5-diiodophenyl) propanoic Acid, Amide-Bridged | 2- (2-Hydroxy-2- (4- (4-hydroxy-3, 5-diiodophenoxy) -3, 5-diiodophenyl) acetamido) -3- (4- (4-hydroxy-3, 5-diiodophenoxy) -3, 5-diiodophenyl) propanoic Acid, Amide-Bridged is a Levothyroxine impurity of Thyroxine (T425600), which is one of the thyroid hormones involved in the maintenance of metabolic homeostasis. Thyroxine is deiodinated in peripheral tissues to the active metabolite, liothyronine, which has been used to treat hyperlipidemia. Group: Biochemicals. Grades: Highly Purified. Pack Sizes: 500ug, 2.5mg. Molecular Formula: C29H17I8NO8, Molecular Weight: 1522.68. US Biological Life Sciences. |  Worldwide |
| 2-(3-(4-Hydroxy-3,5-diiodophenoxy)-2,4-diiodobenzamido)-3-(4-(4-hydroxy-3-iodophenoxy)-3,5-diiodophenyl)propanoic Acid, Amide-Bridged | 2-(3-(4-Hydroxy-3,5-diiodophenoxy)-2,4-diiodobenzamido)-3-(4-(4-hydroxy-3-iodophenoxy)-3,5-diiodophenyl)propanoic Acid, Amide-Bridged is a Levothyroxine impurity of Thyroxine (T425600), which is one of the thyroid hormones involved in the maintenance of metabolic homeostasis. Thyroxine is deiodinated in peripheral tissues to the active metabolite, liothyronine, which has been used to treat hyperlipidemia. Group: Biochemicals. Grades: Highly Purified. Pack Sizes: 500ug, 2.5mg. Molecular Formula: C28H16I7NO7, Molecular Weight: 1366.76. US Biological Life Sciences. | Worldwide |
| (2S)-2-Amino-3-(4-(4-(2-hydroxy-2-(4-(4-hydroxy-3,5-diiodophenoxy)-3,5-diiodophenyl)acetoxy)-3,5-diiodophenoxy)-3,5-diiodophenyl)propanoic Acid, Ester-Bridged | (2S)-2-Amino-3-(4-(4-(2-hydroxy-2-(4-(4-hydroxy-3,5-diiodophenoxy)-3,5-diiodophenyl)acetoxy)-3,5-diiodophenoxy)-3,5-diiodophenyl)propanoic Acid, Ester-Bridged is a Levothyroxine impurity of Thyroxine (T425600), which is one of the thyroid hormones involved in the maintenance of metabolic homeostasis. Thyroxine is deiodinated in peripheral tissues to the active metabolite, liothyronine, which has been used to treat hyperlipidemia. Group: Biochemicals. Grades: Highly Purified. CAS No. 2088032-74-8. Pack Sizes: 500ug, 2.5mg. Molecular Formula: C29H17I8NO8, Molecular Weight: 1522.68. US Biological Life Sciences. | Worldwide |
| (2S,2'S)-3,3'-(((6,6'-Dihydroxy-5,5'-diiodo-[1,1'-biphenyl]-3,3'-diyl)bis(oxy))bis(3,5-diiodo-4,1-phenylene))bis(2-aminopropanoic acid) | (2S,2'S)-3,3'-(((6,6'-Dihydroxy-5,5'-diiodo-[1,1'-biphenyl]-3,3'-diyl)bis(oxy))bis(3,5-diiodo-4,1-phenylene))bis(2-aminopropanoic acid) is a Levothyroxine impurity of Thyroxine (T425600), which is one of the thyroid hormones involved in the maintenance of metabolic homeostasis. Thyroxine is deiodinated in peripheral tissues to the active metabolite, liothyronine, which has been used to treat hyperlipidemia. Group: Biochemicals. Grades: Highly Purified. CAS No. 2088032-54-4. Pack Sizes: 500ug, 2.5mg. Molecular Formula: C30H22I6N2O8, Molecular Weight: 1299.93. US Biological Life Sciences. | Worldwide |
| (2S,2'S)-3,3'-(((6,6'-Dihydroxy-5-iodo-[1,1'-biphenyl]-3,3'-diyl)bis(oxy))bis(3,5-diiodo-4,1-phenylene))bis(2-aminopropanoic Acid) | (2S,2'S)-3,3'-(((6,6'-Dihydroxy-5-iodo-[1,1'-biphenyl]-3,3'-diyl)bis(oxy))bis(3,5-diiodo-4,1-phenylene))bis(2-aminopropanoic Acid) is a Levothyroxine impurity of Thyroxine (T425600), which is one of the thyroid hormones involved in the maintenance of metabolic homeostasis. Thyroxine is deiodinated in peripheral tissues to the active metabolite, liothyronine, which has been used to treat hyperlipidemia. Group: Biochemicals. Grades: Highly Purified. CAS No. 2088032-60-2. Pack Sizes: 500ug, 2.5mg. Molecular Formula: C30H23I5N2O8, Molecular Weight: 1174.03. US Biological Life Sciences. | Worldwide |
| 3,3',5'-Triiodo-L-thyronine | Early detection and treatment of congenital or drug-induced hypothyroidism in the developing human fetus. Group: Biochemicals. Alternative Names: Reverse T3; Levothyroxine EP Impurity K; 3,3,5-Triiodo-L-Thyronine. Grades: Highly Purified. CAS No. 5817-39-0. Pack Sizes: 5mg, 10mg, 25mg. Molecular Formula: C15H12I3NO4, Molecular Weight: 650.97. US Biological Life Sciences. | Worldwide |
| 3,3,5-Triiodo-L-thyronine (Reverse T3) | Early detection and treatment of congenital or drug-induced hypothyroidism in the developing human fetus. Group: Biochemicals. Alternative Names: Reverse T3; Levothyroxine EP Impurity K; 3,3,5-Triiodo-L-Thyronine. Grades: Highly Purified. CAS No. 5817-39-0. Pack Sizes: 5mg. Molecular Formula: C15H12I3NO4, Molecular Weight: 650.97. US Biological Life Sciences. | Worldwide |
| 3,3'-L-Diiodothyronine | 3,3'-L-Diiodothyronine is an impurity of the thyroid medicine Levothyroxine. Synonyms: O-(4-Hydroxy-3-iodophenyl)-3-iodo-L-tyrosine; L-3,3'-Diiodothyronine. Grades: >95%. CAS No. 4604-41-5. Molecular formula: C15H13I2NO4. Mole weight: 525.08. | |
| 4-(4-Hydroxy-3,5-diiodophenoxy)-3,5-diiodobenzaldehyde | Thyroid hormone analogue. A Thyroxine analogue. Synonyms: 3,5,3',5'-Tetraiodo Thyroaldehyde; 4-(4-Hydroxy-3,5-diiodophenoxy)-3,5-diiodobenzaldehyde; Levothyroxine EP Impurity I. Grades: > 95%. CAS No. 2016-06-0. Molecular formula: C13H6I4O3. Mole weight: 717.81. | |
| O-Methyl Tetraiodothyroethylamine | An impurity of Thyroxine which is formed by the molecular addition of iodine to the amino acid tyrosine while the latter is bound to the protein thyroglobulin. Synonyms: O-methyl-tetraiodothyroethylamine; T4-AMINE O-METHYL; X6P4742Z19; Q27293608; 2-(4-(3,5-DIIODO-4-METHOXYPHENOXY)-3,5-DIIODOPHENYL)ETHANAMINE; LEVOTHYROXINE SODIUM IMPURITY, O-METHYL-TETRAIODOTHYROETHYLAMINE, OR T4-AMINE O-METHYL- [USP IMPURITY]. Grades: > 95%. Molecular formula: C15H13I4NO2. Mole weight: 746.89. | |
| Levothyroxine N-methylamide | an impurity of Thyroxine. Synonyms: (S)-2-Amino-3-(4-(4-hydroxy-3,5-diiodophenoxy)-3,5-diiodophenyl)-N-methylpropanamide. Grades: > 95%. Molecular formula: C16H14I4N2O3. Mole weight: 789.92. | |
| Levothyroxine N-Methylamine | an impurity of Thyroxine. Synonyms: (S)-2-Amino-3-(4-(4-hydroxy-3,5-diiodophenoxy)-3,5-diiodophenyl)-N-methylpropanamide. Grades: > 95%. Molecular formula: C16H14I4N2O3. Mole weight: 789.92. | |
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