Clearsynth is a leading innovator in pharmaceutical reference standards, offering high-quality Reference Standards for Ethynyl Estradiol, including both pharmacopeial and non-pharmacopeial impurities, metabolites, stable isotope products, and nitrosamines (N-NO products). Our Ethynyl Estradiol 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 Ethynyl Estradiol-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 Ethynyl Estradiol-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.
Ethynyl Estradiol Related Compounds
Stable Isotopes
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| 2-Methyl-d3 Ethynyl Estradiol | Stable Isotopes | CS-T-99478 | Not Available | Enquire |
| Ethynyl Estradiol 3-Sulfate Sodium Salt-d4 (Major) | Stable Isotopes | CS-T-102804 | 724762-79-2 (Unlabelled) | Enquire |
| Ethynyl Estradiol-13C2 | Stable Isotopes | CS-O-42582 | 2483735-63-1 | Enquire |
| Ethynyl Estradiol-2,4,9,6,6,16,16- D7 | Stable Isotopes | CS-O-14062 | 57-63-6(Unlabeled) | Enquire |
| Ethynyl Estradiol-d7 | Stable Isotopes | CS-T-99576 | Not Available | Enquire |
Metabolites
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| 17-alpha-Ethynyl Estradiol-3-Sulfate | Metabolites | CS-P-07803 | 24560-70-1 | Enquire |
| Ethynyl Estradiol Sulfate | Metabolites | CS-O-01448 | 724762-79-2 | Enquire |
Impurities
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| 17-alpha-Ethynyl Estradiol-3-Sulfate Triethylamine Salt | Impurities | CS-P-09239 | 24560-70-1 (free acid) | Enquire |
| 17-epi-Ethynyl Estradiol | Impurities | CS-T-22087 | 4717-38-8 | Enquire |
| 1-Methyl Ethynyl Estradiol | Impurities | CS-T-58205 | 15071-66-6 | Enquire |
| 2-Methyl Ethynyl Estradiol | Impurities | CS-T-58208 | 3240-39-9 | Enquire |
| 4-Methyl Ethynyl Estradiol | Impurities | CS-T-58206 | 155683-61-7 | Enquire |
| 6-Keto Ethynyl Estradiol | Impurities | CS-T-57001 | 38002-18-5 | In Stock |
| 6-α-Hydroxy Ethynyl Estradiol | Impurities | CS-T-56010 | 27521-34-2 | In Stock |
| 9,11-Dehydro Ethynyl Estradiol | Impurities | CS-O-05547 | 1231-96-5 | In Stock |
| Ethynyl Estradiol 17-Acetate | Impurities | CS-T-54229 | 21221-29-4 | Enquire |
| Ethynyl Estradiol Diacetate | Impurities | CS-T-54231 | 13258-68-9 | Enquire |
Intermediates
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| 16-Oxo Ethynyl Estradiol | Intermediates | CS-T-60074 | 1350468-76-6 | Enquire |
| 18-Methyl Ethynyl Estradiol | Intermediates | CS-T-58207 | 14012-72-7 | Enquire |
| 2-Hydroxy Ethynyl Estradiol | Intermediates | CS-T-56004 | 50394-89-3 | Enquire |
| 2-Methoxy-17a-ethynyl Estradiol | Intermediates | CS-T-57690 | 22415-44-7 | Enquire |
| 4-Hydroxy Ethynyl Estradiol | Intermediates | CS-T-56005 | 50394-90-6 | Enquire |
| 6-β-Hydroxy Ethynyl Estradiol | Intermediates | CS-T-56011 | 56324-28-8 | Enquire |
| Ethynyl Estradiol 3-Acetate | Intermediates | CS-T-54228 | 5779-47-5 | Enquire |
Glucuronides
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| Ethynyl Estradiol 17-β-D-Glucuronide | Glucuronides | CS-T-54227 | 75803-39-3 | Enquire |
| Ethynyl Estradiol 17-Acetate-β-(2',3',4'-Tri-O-acetyl)-... | Glucuronides | CS-T-54230 | 242130-33-2 | Enquire |