Clearsynth is a leading innovator in pharmaceutical reference standards, offering high-quality Reference Standards for Fumarate, including both pharmacopeial and non-pharmacopeial impurities, metabolites, stable isotope products, and nitrosamines (N-NO products). Our Fumarate 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 Fumarate-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 Fumarate-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.
Fumarate Related Compounds
Stable Isotopes
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| (2R,4R,5R,7S)-Aliskiren-d6 Fumarate (2:1) | Stable Isotopes | CS-T-97827 | Not Available | Enquire |
| (2S,4S,5S,7R)-Aliskiren-d6 Fumarate (2:1) | Stable Isotopes | CS-T-97828 | Not Available | Enquire |
| (S)-Fesoterodine-d7 Fumarate | Stable Isotopes | CS-T-100308 | Not Available | Enquire |
| 1,1’-[Oxybis(methylene-4,1-phenyleneoxy)]bis[3-[(1-methyleth... | Stable Isotopes | CS-T-94349 | 1225195-71-0(Unlabelled) | Enquire |
| 3’-Dechloro-3’-bromo Bupropion-d9 Fumarate | Stable Isotopes | CS-T-98919 | 2714418-64-9 | Enquire |
| 8-Hydroxy Aliskiren-d3 Fumarate (2:1) | Stable Isotopes | CS-T-97454 | Not Available | Enquire |
| Aliskiren-d6 Hemifumarate | Stable Isotopes | CS-O-02668 | 173334-58-2 (Unlabeled) | In Stock |
| Bisoprolol-d7 Hemifumarate | Stable Isotopes | CS-T-96152 | 1310012-17-9 | Enquire |
| Clemastine-d5 Fumarate | Stable Isotopes | CS-T-97684 | Not Available | Enquire |
| Demethoxy Aliskiren-d6 Fumarate (2:1) | Stable Isotopes | CS-T-97644 | Not Available | Enquire |
| Desmethyl Tenofovir Disoproxil-d4 Fumarate | Stable Isotopes | CS-T-98990 | Not Available | Enquire |
| Dronedarone-d6 Fumarate | Stable Isotopes | CS-O-06569 | 141626-36-0(Unlabeled)(Freebase) | In Stock |
| Ent-Aliskiren-d6 Fumarate (2:1) | Stable Isotopes | CS-T-97826 | Not Available | Enquire |
| Formoterol hemifumarate-d6 | Stable Isotopes | CS-T-95397 | 43229-80-7 (Unlabeled) | In Stock |
| Formoterol-13C-d3 Hemifumarate | Stable Isotopes | CS-EO-02530 | Not Available | Enquire |
| Ibutilide Fumarate-d5 | Stable Isotopes | CS-T-99200 | Not Available | Enquire |
| Ketotifen-d3 fumarate | Stable Isotopes | CS-O-42903 | 1795138-23-6 | Enquire |
| Monomethyl Fumarate-d5 | Stable Isotopes | CS-O-20007 | 1616345-45-9 | In Stock |
| N-Deformyl Formoterol-d6 Fumarate (Mixture of Diastereomers... | Stable Isotopes | CS-T-97653 | 1795142-59-4 | Enquire |
| N-Methyl Formoterol-d3 Fumarate (Mixture of Diastereomers) | Stable Isotopes | CS-T-97311 | 1795143-40-6 | Enquire |
| N-Nitroso Sitagliptin Fumarate Adduct D4 | Stable Isotopes | CS-O-44423 | Not Available | Enquire |
| Quetiapine D4 Fumarate | Stable Isotopes | CS-EO-02961 | 1217311-36-8 (free base) | Enquire |
| Quetiapine Tetra Ethylene Glycol Fumarate-d8 | Stable Isotopes | CS-T-101560 | 2734435-09-5 | Enquire |
| Quetiapine-d4 (Ethoxy-d4) Hemifumarate | Stable Isotopes | CS-O-06904 | 1217310-65-0 | Enquire |
| Quetiapine-d8 Hemifumarate (piperazine-d8) | Stable Isotopes | CS-T-95529 | 1435938-24-1 | Enquire |
| rac Formoterol Hemifumarate-d6 | Stable Isotopes | CS-O-02939 | ---- | Enquire |
| Sitagliptin Fumarate Adduct D4 | Stable Isotopes | CS-O-54332 | 2088771-60-0(Unlabelled) | Enquire |
| Tenofovir Alafenamide-d6 Fumarate(diastereomers) | Stable Isotopes | CS-O-53886 | 390409-17-3 (unlabeled) | Enquire |
| Tenofovir Alafenamide-d7 Fumarate | Stable Isotopes | CS-T-96337 | Not Available | Enquire |
| Tiamulin-13C4 Fumarate | Stable Isotopes | CS-T-99073 | Not Available | Enquire |
| Trimebutine-D5 Fumarate | Stable Isotopes | CS-EO-02442 | Not Available | Enquire |
| Vonoprazan Fumarate-13C,d3 | Stable Isotopes | CS-O-32964 | 881681-01-2 (Unlabeled) | In Stock |
| Vonoprazan-d4 Fumarate | Stable Isotopes | CS-EO-02592 | 881681-01-2(Unlabeled) | In Stock |
| Vonoprazan-d5 Fumarate | Stable Isotopes | CS-T-94673 | 2215059-99-5 | Enquire |
API
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| Aliskiren Hemifumarate | API | CS-O-10994 | 173334-58-2 | In Stock |
| Bedaquiline fumarate | API | CS-AN-00009 | 845533-86-0 | In Stock |
| Bisoprolol Fumarate | API | CS-M-34855 | 104344-23-2 | In Stock |
| CABOZANTINIB FUMARATE | API | CS-O-52726 | 849217-68-1(FREE BASE) | Enquire |
| Clemastine Fumarate | API | CS-O-06237 | 14976-57-9 | In Stock |
| Domperidone Fumarate | API | CS-EO-03499 | 2307515-18-8 | Enquire |
| E & Z Fluvoxamine Fumarate | API | CS-O-44966 | 1246666-24-9 | In Stock |
| Emedastine Difumarate | API | CS-P-00414 | 87233-62-3 | Enquire |
| Fesoterodine Fumarate | API | CS-O-30922 | 286930-03-8 | In Stock |
| Formoterol fumarate dihydrate | API | CS-O-01547 | 183814-30-4 | In Stock |
| Ketotifen fumarate | API | CS-O-01707 | 34580-14-8 | In Stock |
| Metoprolol Fumarate | API | CS-O-30668 | 80274-67-5 | In Stock |
| Rupatadine Fumarate | API | CS-O-30752 | 182349-12-8 | In Stock |
| Ruxolitinib Fumarate | API | CS-O-51568 | ---- | In Stock |
| Ruxolitinib Hemifumarate | API | CS-O-45668 | 2803478-47-7 | In Stock |
| Siponimod Fumarate | API | CS-O-44360 | 1234627-85-0 | In Stock |
| Sitagliptin Fumarate | API | CS-EO-03857 | 837430-24-7 | Enquire |
| Sodium stearyl fumarate | API | CS-O-11001 | 4070-80-8 | In Stock |
| Tafamidis Fumarate | API | CS-EO-03872 | 2641817-21-0 | Enquire |
| Tenofovir Alafenamide Fumarate | API | CS-AV-00089 | 379270-38-9 | In Stock |
| Tenofovir Disoproxil Fumarate | API | CS-M-58137 | 202138-50-9 | In Stock |
| Tiamulin Hydrogen fumarate | API | CS-O-02443 | 55297-96-6 | In Stock |
| Vonoprazan Fumarate | API | CS-ED-02045 | 881681-01-2 | In Stock |
| Vonoprazan Fumarate (TAK-438) | API | CS-O-13856 | 881681-01-2 | In Stock |
Metabolite
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| (N,N-Dimethyltryptamine Fumarate | Metabolite | CS-O-43786 | 68677-26-9 | Enquire |
| Desvenlafaxine Fumarate | Metabolite | CS-EO-03478 | 93414-04-1 | Enquire |
Impurity
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| (S)-Tenofovir Disoproxil Fumarate | Impurity | CS-T-61641 | 1432630-26-6 | In Stock |
| 1,4,5,6-tetrahydropyridin Vonoprazan Fumarate | Impurity | CS-O-53542 | ---- | Enquire |
| 2-(2,5-Dioxopyrrolidin-1-Yl)Ethyl Methyl Fumarate | Impurity | CS-ZE-03440 | 1577222-14-0 | In Stock |
| 4-chloro Vonoprazan Fumarate | Impurity | CS-O-53998 | 2855936-83-1 | Enquire |
| 5-chloro Vonoprazan Fumarate | Impurity | CS-O-50311 | ---- | Enquire |
| 5-methyl-10-(2-(piperidin-1-yl)ethoxy)-5,10-dihydrobenzo[c]t... | Impurity | CS-O-52999 | 286854-11-3(Free base) | Enquire |
| Bedaquiline fumarate adduct | Impurity | CS-O-46072 | ---- | Enquire |
| Bedaquiline Fumarate impurity A (Mixture) | Impurity | CS-O-45569 | Not Available | Enquire |
| Bedaquiline Fumarate impurity C | Impurity | CS-O-45571 | Not Available | Enquire |
| Bepotastine Ethyl ester fumarate salt | Impurity | CS-O-49254 | 210095-48-0 | Enquire |
| Bisoprolol AMINO Fumarate | Impurity | CS-O-45980 | Not Available | Enquire |
| Bisoprolol EP Impurity B Hemifumarate (Bisoprolol n-Propyl D... | Impurity | CS-P-07244 | 1447715-44-7 (free base) | In Stock |
| Bisoprolol EP Impurity G fumarate salt | Impurity | CS-O-45413 | 1215342-36-1 (Freebase) | Enquire |
| Bisoprolol OXO Fumarate | Impurity | CS-O-45979 | Not Available | Enquire |
| Clemastine Fumarate Impurity A (Mixture of Diastereomers) | Impurity | CS-P-00896 | 108825-05-4 | In Stock |
| Clemastine Fumarate Impurity B HCl | Impurity | CS-P-00897 | 61771-18-4 (freebase) | In Stock |
| Clemastine Fumarate Impurity C | Impurity | CS-P-00898 | 59767-24-7 | In Stock |
| Clobutinol Fumarate Isomer | Impurity | CS-O-48076 | 2734472-37-6 | Enquire |
| Dehydro Bisoprolol Hemifumarate | Impurity | CS-O-07377 | 1217245-60-7 (Free base) | In Stock |
| Diethylaminocarboxymethyl POC Tenofovir Fumarate | Impurity | CS-EO-03885 | 2820170-87-2 | In Stock |
| Diisopropyl Tenofovir Fumarate | Impurity | CS-EO-03884 | 160616-04-6 (Freebase) | Enquire |
| Distearyl Fumarate | Impurity | CS-O-57258 | 7283-68-3 | Enquire |
| Eicos-11-Enyl Trimethylsilyl Fumarate | Impurity | CS-O-57257 | ---- | Enquire |
| Fesoterodine Aldehyde of Diol Fumarate | Impurity | CS-EO-03559 | 214601-12-4 (Freebase) | Enquire |
| Fesoterodine Diol Dimer fumarate | Impurity | CS-O-48706 | "1428856-45-4 (Freebase)" | Enquire |
| Fesoterodine Fumarate impurity B (Diester impurity) | Impurity | CS-O-35019 | 1428856-48-7 | Enquire |
| FESOTERODINE FUMARATE IMPURITY G | Impurity | CS-O-49736 | 1428856-53-4 | Enquire |
| Fesoterodine Phenol Aldehyde Fumarate salt | Impurity | CS-O-49321 | 214601-12-4 (Freebase) | Enquire |
| Fesoterodine Related Impurity 3 Fumarate | Impurity | CS-EO-03561 | 1435768-96-9 (Freebase) | Enquire |
| Formoterol EP Impurity A Fumarate | Impurity | CS-EO-03577 | 150513-24-9 (Freebase) | Enquire |
| Formoterol Fumarate benzoxazol impurity | Impurity | CS-O-46225 | Not Available | Enquire |
| Formoterol Fumarate EP Impurity A | Impurity | CS-O-14073 | 150513-24-9 | In Stock |
| Formoterol Fumarate EP Impurity B | Impurity | CS-O-14074 | 1224588-66-2 | In Stock |
| Formoterol Fumarate EP Impurity C | Impurity | CS-O-14075 | Not Available | Enquire |
| Formoterol Fumarate EP Impurity D | Impurity | CS-O-14076 | 1795133-96-8 | In Stock |
| Formoterol Fumarate EP Impurity E | Impurity | CS-O-14077 | 1616967-26-0 | In Stock |
| Formoterol Fumarate EP Impurity F | Impurity | CS-O-14078 | 1795129-59-7 | Enquire |
| Formoterol Fumarate(Mixture of Diastereomers) | Impurity | CS-TB-59588 | 169375-55-7 | Enquire |
| Heptadecyl Trimethylsilyl Fumarate | Impurity | CS-O-57256 | ---- | Enquire |
| MOC-POC Tenofovir Fumarate | Impurity | CS-O-48041 | 1246812-43-0 (Freebase) | Enquire |
| Mono-POC Methyl Tenofovir Fumarate (Mixture of Diastereomers... | Impurity | CS-EO-03886 | 1246812-16-7 (Freebase) | Enquire |
| N-desmethyl N-ethyl vonoprazan fumarate | Impurity | CS-O-47382 | Not Available | Enquire |
| Palbociclib 2-Steryl Fumarate Adduct | Impurity | CS-O-59259 | ---- | Enquire |
| Palbociclib 3-Steryl Fumarate Adduct | Impurity | CS-O-59258 | ---- | Enquire |
| Quetiapine EP Impuirty I (Fumarate salt) | Impurity | CS-EO-03804 | 2734403-85-9 | Enquire |
| Quetiapine EP Impurity B (Fumarate salt) | Impurity | CS-EO-03803 | 937731-18-5 | Enquire |
| Quetiapine EP Impurity J Fumarate Salt | Impurity | CS-O-49021 | 2470243-24-2 | Enquire |
| Quetiapine Ethyl Ether (Fumarate) | Impurity | CS-EO-03799 | 2470241-46-2 | Enquire |
| siponimod Z-isomer Hemifumarate | Impurity | CS-O-49861 | Not Available | Enquire |
| Sitagliptin Fumarate Adduct | Impurity | CS-O-16256 | 2088771-60-0 | In Stock |
| Tenofovir Alafenamide Fumarate | Impurity | CS-ED-01327 | 1392275-56-7 | In Stock |
| Tenofovir Diphenyl HemiFumarate salt | Impurity | CS-O-50595 | Not Available | Enquire |
| Tenofovir Disoproxil (S)-Isomer Fumarate | Impurity | CS-O-15755 | 1280130-08-6 (Freebase) | In Stock |
| Tenofovir Disoproxil Fumarate Impurity | Impurity | CS-EO-00003 | 1244022-55-6 | Enquire |
| Tenofovir Disoproxil Fumarate USP RC J | Impurity | CS-EO-03121 | 1246812-23-6 | Enquire |
| Tenofovir disoproxil impurity L fumarate | Impurity | CS-O-52968 | Not Available | In Stock |
| Tenofovir Ethyl ester fumarate salt impurity | Impurity | CS-O-58098 | ---- | Enquire |
| Tenofovir isopropylphenyl HemiFumarate salt | Impurity | CS-O-50591 | 2126010-05-5(Freebase) | Enquire |
| TenofovirDisoproxil Ethyl fumarate Impurity | Impurity | CS-O-49741 | Not Available | Enquire |
Fine Chemicals
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| 2-(2,5-dioxopyrrolidin-1-yl)ethyl ethyl fumarate | Fine Chemicals | CS-O-57261 | ---- | Enquire |
| 6-(2,5-dichlorophenyl)-1,3,5-triazine-2,4(1H,3H)-diimine fum... | Fine Chemicals | CS-O-31164 | ---- | In Stock |
| Bis(2-ethylhexyl) Fumarate | Fine Chemicals | CS-O-49470 | 141-02-6 | Enquire |
| Dimethyl fumarate | Fine Chemicals | CS-O-30572 | 624-49-7 | In Stock |
Nitrosamine
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| N-Nitroso Sitagliptin Fumarate Adduct | Nitrosamine | CS-O-44359 | Not Available | In Stock |
Secondary Standards
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| Formoterol fumarate for system suitability (Y0000340) | Secondary Standards | CS-EG-02200 | 43229-80-7 | Enquire |
| Tiamulin Fumarate | Secondary Standards | CS-ER-02095 | 55297-96-6 | In Stock |
| Vonoprazan Fumarate Secondary standard | Secondary Standards | CS-SS-26552-1GM | 1260141-27-2 | Enquire |
| Vonoprazan Fumarate Secondary standard | Secondary Standards | CS-SS-26552 | 1260141-27-2 | Enquire |
Stable Isotope Reagent
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| Dimethyl Fumarate-d6 | Stable Isotope Reagent | CS-O-15666 | 66487-95-4 | In Stock |
| Dimethyl Fumarate-d8 | Stable Isotope Reagent | CS-O-47086 | 1616345-47-1 | Enquire |
| Diroximel Fumarate-d4 | Stable Isotope Reagent | CS-O-45473 | 1577222-14-0 (Unlabelled) | Enquire |
Reagents
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| Ferrous Fumarate | Reagents | CS-O-01548 | 141-01-5 | Enquire |
Analytical Standard
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| Dimethyl Fumarate D8-AR Grade-10 ppm/ACN | Analytical Standard | CS-O-47086-1ML | 1616345-47-1 | Enquire |
| Dimethyl Fumarate-d8-AR Grade | Analytical Standard | CS-O-47086-10MG | 1616345-47-1 | Enquire |
Therapeutic
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| Monoethyl Fumarate | Therapeutic | CS-O-01932 | 2459-05-4 | In Stock |
| nPOC-POC Tenofovir Fumarate | Therapeutic | CS-T-93252 | 1217542-13-6 (Freebase) | In Stock |