Clearsynth is a leading innovator in pharmaceutical reference standards, offering high-quality Reference Standards for Thyroxine, including both pharmacopeial and non-pharmacopeial impurities, metabolites, stable isotope products, and nitrosamines (N-NO products). Our Thyroxine impurity reference standards are invaluable for pharmaceutical research, supporting product development, ANDA and DMF submissions, quality control (QC), method validation, and stability studies. They also aid in identifying unknown impurities and assessing genotoxic potential.
Our Thyroxine-related products undergo thorough characterization and are supplied with detailed Certificates of Analysis (COA) and analytical data that meet regulatory requirements. All supplied products are re-tested at regular intervals to ensure ongoing quality and compliance.
Our Thyroxine-related products undergo thorough characterization and are supplied with detailed Certificates of Analysis (COA) and analytical data that meet regulatory requirements. All supplied products are re-tested at regular intervals to ensure ongoing quality and compliance.
Thyroxine Related Compounds
Stable Isotopes
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| Levothyroxine-d3 | Stable Isotopes | CS-O-16186 | Not Available | In Stock |
| L-Thyroxine-[L-Tyr-d5] hydrochloride | Stable Isotopes | CS-I-00443 | 1261254-57-2 | Enquire |
| L-Thyroxine-[L-Tyr-d5] hydrochloride (Solution) | Stable Isotopes | CS-I-00554 | 1261254-57-2 | Enquire |
| N-(Trifluoroacetyl)-thyroxine-13C6 4’-O-b-D-Glucuronide Tria... | Stable Isotopes | CS-T-98391 | Not Available | Enquire |
| N-Acetyl L-Thyroxine-13C6 | Stable Isotopes | CS-T-97054 | Not Available | Enquire |
| N-Acetyl L-Thyroxine-d3 | Stable Isotopes | CS-T-97053 | Not Available | Enquire |
| Thyroxine 13C12 | Stable Isotopes | CS-C-01512 | 1262750-40-2 | Enquire |
| Thyroxine Glucuronide-13C6 Disodium Salt | Stable Isotopes | CS-T-102700 | 21462-56-6( Unlabelled) (free acid) | Enquire |
| Thyroxine Methyl Ester- 13C6 | Stable Isotopes | CS-T-99789 | Not Available | Enquire |
| Thyroxine-13C6 | Stable Isotopes | CS-O-14503 | 1217780-14-7 | In Stock |
| β-Hydroxy Thyroxine-13C6 | Stable Isotopes | CS-T-96926 | Not Available | Enquire |
API
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| Levothyroxine | API | CS-BB-00023 | 51-48-9 | In Stock |
| Levothyroxine Sodium | API | CS-O-01770 | 55-03-8 | In Stock |
| Levothyroxine Sodium Hydrate | API | CS-O-16243 | 25416-65-3 | In Stock |
| Thyroxine Sodium | API | CS-O-02455 | 55-03-8 | In Stock |
Metabolite
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| Levothyroxine N-Methylamide | Metabolite | CS-O-14502 | 2088032-52-2 | Enquire |
Impurity
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| levothyroxine Dimer | Impurity | CS-O-45712 | 2088032-62-4 | Enquire |
| Levothyroxine Dimer 2 | Impurity | CS-O-34272 | 1425050-65-2 (Racemic) | In Stock |
| Levothyroxine dimer-1 | Impurity | CS-O-34262 | 2086257-72-7 (Racemic) | In Stock |
| Levothyroxine EP Impurity B | Impurity | CS-O-15811 | 1628720-66-0 | In Stock |
| Levothyroxine EP Impurity C | Impurity | CS-T-45488 | 51-24-1 | In Stock |
| Levothyroxine EP Impurity D | Impurity | CS-T-43890 | 67-30-1 | In Stock |
| Levothyroxine EP Impurity E | Impurity | CS-T-19369 | 1041-01-6 | In Stock |
| Levothyroxine EP Impurity F | Impurity | CS-T-62058 | 911661-90-0 | In Stock |
| Levothyroxine EP Impurity G Hydrochloride | Impurity | CS-O-33624 | 2230724-39-5 (Freebase) | In Stock |
| Levothyroxine EP Impurity H | Impurity | CS-T-43894 | 2055-97-2 | In Stock |
| Levothyroxine EP Impurity I | Impurity | CS-T-43892 | 2016-06-0 | In Stock |
| Levothyroxine EP Impurity K | Impurity | CS-O-14067 | 5817-39-0 | In Stock |
| Levothyroxine Gallic acid adduct | Impurity | CS-O-54445 | ---- | Enquire |
| Levothyroxine Glucose Adduct | Impurity | CS-P-08177 | ---- | In Stock |
| Levothyroxine Lactose Adduct | Impurity | CS-P-08082 | Not Available | In Stock |
| Levothyroxine Lactose Adduct (N-lactoside) | Impurity | CS-O-35442 | Not Available | Enquire |
| Levothyroxine Monochloro Impurity | Impurity | CS-O-16035 | 909279-46-5 | In Stock |
| Levothyroxine Related Compound 10 | Impurity | CS-P-08124 | 94345-95-6 | Enquire |
| Levothyroxine Sodium EP Impurity J | Impurity | CS-I-00089 | 70-40-6 | In Stock |
| Levothyroxine stearic acid impurity 1 | Impurity | CS-O-53552 | ---- | Enquire |
| Levothyroxine stearic acid impurity 2 | Impurity | CS-O-53553 | ---- | Enquire |
| Levothyroxine-4-Lactose Maillard Impurity | Impurity | CS-O-50307 | Not Available | Enquire |
| Levothyroxine-alpha-hydroxymethy-impurity | Impurity | CS-O-34260 | 2086257-60-3 | In Stock |
| O-(4-Hydroxy-3-iodophenyl) Levothyroxine | Impurity | CS-EO-03977 | " 2086274-34-0" | Enquire |
Intermediate
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| N-Acetyl L-Thyroxine | Intermediate | CS-T-01205 | 26041-51-0 | In Stock |
Glucuronide
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| Levothyroxine Mannitol Adduct | Glucuronide | CS-O-53867 | ---- | Enquire |
| Thyroxine 4'-O-beta-D-Glucuronide | Glucuronide | CS-T-62059 | 21462-56-6 | Enquire |
| Thyroxine Acyl-beta-D-Glucuronide | Glucuronide | CS-T-62057 | 909880-81-5 | Enquire |