Clearsynth is a leading innovator in pharmaceutical reference standards, offering high-quality Reference Standards for Pyridinium, including both pharmacopeial and non-pharmacopeial impurities, metabolites, stable isotope products, and nitrosamines (N-NO products). Our Pyridinium 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 Pyridinium-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 Pyridinium-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.
Pyridinium Related Compounds
Stable Isotopes
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| 1-[[(6R,7R)-7-Amino-2-carboxy-8-oxo-5-thia-1-azabicyclo[4.2.... | Stable Isotopes | CS-T-97819 | Not Available | Enquire |
| 3-(Aminocarbonyl)-1-(2,3,5-tri-O-acetyl-β-D-ribofuranosyl)-p... | Stable Isotopes | CS-T-100821 | Not Available | Enquire |
| 3-(Aminocarbonyl)-1,6-dimethyl-pyridinium-d3 Iodide | Stable Isotopes | CS-T-98787 | Not Available | Enquire |
| 3-(Ethoxycarbonyl)-1-(2,3,5-tri-O-acetyl-b-D-ribofuranosyl)-... | Stable Isotopes | CS-T-96573 | Not Available | Enquire |
| 4,4'-[9H-Carbazole-3,6-diyldi-(1E)-2,1-ethenediyl]bis[1-meth... | Stable Isotopes | CS-T-100686 | 647859-37-8(unlabeled) | Enquire |
| Cetylpyridinium Chloride-d5 | Stable Isotopes | CS-T-102280 | 123-03-5 (Unlabelled) | Enquire |
| Pyridinium bisretinoid A2E D4 | Stable Isotopes | CS-O-49371 | 173449-96-2 (Unlabelled) | Enquire |
| 3-Hydroxy-1-methylpyridinium-d3 Iodide | Stable Isotopes | CS-T-101043 | 7500-05-2 | Enquire |
| 3-Methoxycarbonyl-1-(methyl-d3)pyridinium Iodide | Stable Isotopes | CS-T-57640 | 131448-16-3 | Enquire |
| 5-(2-Chlorobenzyl)-thieno[3,2-c]pyridinium-d4 Chloride | Stable Isotopes | CS-T-99332 | Not Available | Enquire |
| N-(Methyl-d3)-4-phenylpyridinium Iodide | Stable Isotopes | CS-T-58577 | 207556-07-8 | Enquire |
| N-(Phenethyl)pyridinium-d5 Bromide | Stable Isotopes | CS-T-102132 | Not Available | Enquire |
| Trimegestone sulfate pyridinium salt 13C, D3 | Stable Isotopes | CS-BU-00083 | Not Available | Enquire |
API
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| Cetylpyridinium chloride | API | CS-O-06303 | 123-03-5 | In Stock |
Impurity
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| 1-Benzyl-4-(5,6-dimethoxy-1-oxoindan-2-yl)methylpyridinium B... | Impurity | CS-T-48865 | 231283-82-2 | In Stock |
| 3,4-diamino-1-(3,4-diaminopyridin-2-yl)pyridinium | Impurity | CS-O-46389 | Not Available | Enquire |
| Clopidogrel Pyridinium Bromide Impurity | Impurity | CS-O-38459 | 1396607-49-0 | In Stock |
| Destrifluoromethylphenol-pyridinium Delamanid impurity | Impurity | CS-O-56603 | ---- | Enquire |
| N-Sulfamoylethyl naratriptan pyridinium(free salt form) | Impurity | CS-O-44112 | 2144776-32-7 | Enquire |
| Ticlopidine Pyridinium Bromide | Impurity | CS-O-49012 | 2418591-13-4 | Enquire |
| (3a)-Allopregnanolone Sulfate Pyridinium Salt | Impurity | CS-T-47530 | 1177357-94-6 | Enquire |
| 1,1’-[1,4-Butanediylbis[oxy(3-oxo-3,1-propanediyl)]]bis[4-(a... | Impurity | CS-T-69672 | 116819-79-5 | Enquire |
| 1-[(Chloromethoxy)methyl]-2-[(hydroxyimino)methyl]-pyridiniu... | Impurity | CS-T-72521 | 27123-11-1 | Enquire |
| 1-Phenethylpyridinium | Impurity | CS-O-40527 | Not Available | Enquire |
| 3-hydroxy-5-methyl-1-phenylpyridinium | Impurity | CS-O-14785 | Not Available | Enquire |
| Clopidogrel Pyridinium Bromide Impurity | Impurity | CS-O-07686 | 1396607-49-0 | Enquire |
| Edoxaban pyridinium | Impurity | CS-O-51874 | Not Available | Enquire |
| N-butylpyridinium hexafluorophosphate | Impurity | CS-DA-00215 | 186088-50-6 | Enquire |
| Pregnanolone Sulfate Pyridinium Salt | Impurity | CS-T-60743 | 124107-39-7 | Enquire |
Intermediate
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| Pyridinium dichromate | Intermediate | CS-DB-00168 | 20039-37-6 | In Stock |
Fine Chemicals
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| 1,1′-Dioctyl-4,4′-bipyridinium ditriflimide | Fine Chemicals | CS-O-50223 | 270256-50-3 | Enquire |
| 1,1'-Dimethyl-4,4'-dipyridinium-dichlorid | Fine Chemicals | CS-ZH-36303 | 75365-73-0 | In Stock |
Nitrosamine
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| N-Nitroso Naratriptan N-alkyl pyridinium impurity | Nitrosamine | CS-O-51756 | Not Available | Discontinued |
| N-Nitroso Naratriptan pyridinium impurity | Nitrosamine | CS-O-51754 | Not Available | Discontinued |
| N-Nitrosopyridinium | Nitrosamine | CS-O-39617 | 45590-75-8 | Enquire |
Polymers
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| Poly(1,4-isoprene)-b-poly(N-methyl 2-vinyl pyridinium iodide... | Polymers | CS-PM-00451 | Not Available | Enquire |
| Poly(4-vinyl pyridine–co–4-vinyl N-methylpyridinium bromide)... | Polymers | CS-PM-00764 | Not Available | Enquire |
| Poly(4-vinyl pyridine–co–4-vinyl N-propylamino pyridinium br... | Polymers | CS-PM-00765 | Not Available | Enquire |
Stable Isotope Reagent
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| 3-Carbamoyl-1-methyl- d3 -pyridinium Chloride | Stable Isotope Reagent | CS-C-01734 | 1218993-18-0 | Enquire |
| n-Hexadecylpyridinium-d5 Bromide | Stable Isotope Reagent | CS-C-01111 | 143715-91-7 | Enquire |
Building Blocks
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| 1-Benzyl-4-methylpyridinium chloride | Building Blocks | CS-O-58345 | 23662-66-0 | Enquire |
| N-benzyl-4-methylpyridinium chloride | Building Blocks | CS-O-44030 | Not Available | Enquire |
| 4-Vinyl N-methyl pyridinium iodide | Building Blocks | CS-PM-01730 | 21351-43-9 | Enquire |
| N-Methylpyridinium | Building Blocks | CS-O-45090 | 694-56-4 | Enquire |
Steroids
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| 3-[[[(1S)-1-Carboxy-2-hydroxyethyl]amino]carbonyl]-1-[[[[(2R... | Steroids | CS-O-48248 | 2014450-84-9 | Enquire |
Therapeutic
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| Naratriptan Pyridinium Iodide | Therapeutic | CS-P-01819 | ---- | Enquire |