Clearsynth is a leading innovator in pharmaceutical reference standards, offering high-quality Reference Standards for Phenytoin, including both pharmacopeial and non-pharmacopeial impurities, metabolites, stable isotope products, and nitrosamines (N-NO products). Our Phenytoin 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 Phenytoin-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 Phenytoin-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.
Phenytoin Related Compounds
Stable Isotopes
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| (+/-)-4-Hydroxy Mephenytoin-d3 | Stable Isotopes | CS-T-56128 | 1173022-56-4 | In Stock |
| dl-5-(4-Hydroxyphenyl)-5-Phenyl-Hydantoin-1 | Stable Isotopes | CS-BU-00041 | 2784-27-2 (Unlabelled) | In Stock |
| Fosphenytoin Sodium-d10 | Stable Isotopes | CS-T-100280 | 93390-81-9(Unlabelled) | Enquire |
| Mephenytoin-d8 | Stable Isotopes | CS-W-00413 | 50-12-4(Unlabelled) | In Stock |
| Phenytoin-d10 | Stable Isotopes | CS-O-02749 | 65854-97-9 | In Stock |
| Phenytoin-d5 | Stable Isotopes | CS-B-00352 | 57-41-0 (unlabelled) | Enquire |
| rac-Mephenytoin-d3 | Stable Isotopes | CS-T-57497 | 1185101-86-3 | In Stock |
| rac-Mephenytoin-d5 | Stable Isotopes | CS-T-57498 | 1185032-66-9 | In Stock |
| rac-N-Desmethyl Mephenytoin-d5(Major) | Stable Isotopes | CS-T-52246 | 119458-27-4 | In Stock |
API Standards
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| (R)-Mephenytoin | API Standards | CS-T-31813 | 71140-51-7 | Enquire |
| (S)-Mephenytoin | API Standards | CS-T-31814 | 70989-04-7 | In Stock |
| Fosphenytoin | API Standards | CS-ED-02004 | 93390-81-9 | Enquire |
| Mephenytoin | API Standards | CS-EK-01429 | 50-12-4 | Enquire |
| Phenytoin | API Standards | CS-O-02145 | 57-41-0 | In Stock |
| Phenytoin Sodium | API Standards | CS-O-02068 | 630-93-3 | In Stock |
Metabolites
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| 3-Hydroxy Phenytoin | Metabolites | CS-T-28236 | 30074-03-4 | In Stock |
Impurities
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| (+/-)-4-Hydroxy Mephenytoin | Impurities | CS-T-56127 | 61837-65-8 | In Stock |
| (S)-4-Hydroxy Mephenytoin | Impurities | CS-T-27668 | 82695-93-0 | In Stock |
| Fosphenytoin Cyclohexyl impurity | Impurities | CS-O-43231 | Not Available | Enquire |
| Phenytoin Related Compound A | Impurities | CS-T-53819 | 3060-50-2 | In Stock |
| Phenytoin Sodium EP Impurity B | Impurities | CS-O-31145 | 134-81-6 | In Stock |
| R-(-)-N-Desmethyl Mephenytoin | Impurities | CS-T-52247 | 65567-32-0 | Enquire |
| rac N-Desmethyl Mephenytoin | Impurities | CS-T-52245 | 631-07-2 | Enquire |
Intermediates
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| (R)-1-Methylmephenytoin | Intermediates | CS-T-34275 | 201606-44-2 | Enquire |
| 4-Hydroxyphenytoin | Intermediates | CS-Q-00205 | 2784-27-2 | Enquire |
| Fosphenytoin Sodium | Intermediates | CS-T-24814 | 92134-98-0 | In Stock |
Glucuronides
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| 4-Hydroxyphenytoin glucuronide | Glucuronides | CS-ED-01004 | 53819-79-7 | Enquire |