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Clearsynth is a leading innovator in pharmaceutical reference standards, offering high-quality Reference Standards for Thiamine, including both pharmacopeial and non-pharmacopeial impurities, metabolites, stable isotope products, and nitrosamines (N-NO products). Our Thiamine 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 Thiamine-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.

Thiamine Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
3-(N-Maleimido)propionate Thiamine-d4 Stable Isotopes CS-T-100094 Not Available Enquire
Thiamine Benzoate-d5 Hydrochloride Stable Isotopes CS-T-99077 Not Available Enquire
Thiamine d3 Hydrochloride Stable Isotopes CS-O-16964 Not Available Enquire
Thiamine hydrochloride phosphate-d3 Stable Isotopes CS-T-99792 Not Available Enquire
Thiamine monochloride-C13 hydrochloride Stable Isotopes CS-O-57404 67-03-8(Unlabelled) Enquire
Thiamine-[13C4].Hydrochloride Stable Isotopes CS-I-00110 1257525-77-1 Enquire
Thiamine-13C3 Hydrochloride Stable Isotopes CS-T-94070 67-03-8 (unlabelled) Enquire
Thiamine-d3 Pyrophosphate Chloride (d3-Major) Stable Isotopes CS-T-93735 154-87-0 (Unlabeled) Enquire
Thiamine-d4 HCl Stable Isotopes CS-P-08543 67-03-8 (Unlabelled) Enquire


API Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
2-Nor Thiamine API Standards CS-P-00220 7770-93-6 Enquire
ALLITHIAMINE API Standards CS-DV-03462 554-44-9 Enquire
Benfotiamine API Standards CS-O-06198 22457-89-2 In Stock
Oxythiamine API Standards CS-ED-01932 136-16-3 Enquire
Oxythiamine Hydrochloride API Standards CS-EO-03902 614-05-1 Enquire
Pyrithiamine API Standards CS-T-41212 534-64-5 Enquire
Thiamine Disulfide Hydrate API Standards CS-T-61990 67-16-3 In Stock
Thiamine hydrobromide API Standards CS-O-44397 4234-86-0 Enquire
Thiamine Hydrochloride API Standards CS-O-30783 67-03-8 In Stock
Toxopyrimidine API Standards CS-M-56031 73-67-6 In Stock
Vitamin B1 API Standards CS-O-02560 70-16-6 In Stock


Metabolites

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Thiamine Sulfate Metabolites CS-T-61989 2380-61-2 In Stock


Impurities

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(3R)-3-({[(4-amino-2-methylpyrimidin-5-yl)methyl]carbamothio... Impurities CS-O-35622 Not Available Enquire
2'-Nor Thiamine Impurities CS-ZH-39995 7770-93-6(Freebase) Enquire
2-Nor Thiamine Hydrochloride Salt Impurities CS-T-62882 49614-72-4 In Stock
Ethyl Thiamine Impurities CS-T-23210 3505-34-8 Enquire
Oxo Thiamine Impurities CS-T-38369 490-82-4 In Stock
Thiamine Acetate Impurities CS-T-44114 1037-29-2 Enquire
Thiamine Benzoate Hydrochloride Impurities CS-T-86420 1052-32-0 Enquire
Thiamine carboxamide Impurity Impurities CS-O-57770 7389-14-2 Enquire
Thiamine Disulfide Impurities CS-EO-03900 1899166-52-9 Enquire
Thiamine EP Impurity B Impurities CS-EO-00057 7771-57-5 Enquire
Thiamine EP Impurity B (Bromide) Impurities CS-EO-03901 7771-57-5 (Freebase) Enquire
Thiamine EP Impurity B Hydrobromide Impurities CS-O-44131 Not Available Enquire
Thiamine EP Impurity C Impurities CS-EO-00058 20166-17-0 In Stock
Thiamine EP Impurity E Impurities CS-O-31156 299-35-4 In Stock
Thiamine EP Impurity F Impurities CS-EO-00496 10593-44-9 Enquire
Thiamine Impurity 1 Impurities CS-EO-00497 7403-34-1 Enquire
Thiamine Impurity 25 Impurities CS-T-95969 2169341-54-0 Enquire
Thiamine Impurity 25 DiHCl salt Impurities CS-P-09210 2169341-54-0 (Freebase) Enquire
Thiamine Impurity G Impurities CS-P-00225 Not Available Enquire
Thiamine phosphoric acid ester phosphate salt Impurities CS-O-46978 635-97-2 Enquire
Thiamine Pyrophosphate Chloride Impurities CS-T-44112 154-87-0 In Stock
Thiamine Thiocarbamate Impurities CS-T-44116 89285-03-0 Enquire
Thiamine Triphosphate Impurities CS-T-87207 3475-65-8 In Stock


EP Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Thiamine hydrochloride (Y0000467) EP Standards CS-EG-00723 67-03-8 Enquire
Thiamine nitrate (Y0001758) EP Standards CS-EG-00783 532-43-4 Enquire
Thiamine nitrate (Y0001758) EP Standards CS-EG-00773 532-43-4 Enquire


Intermediates

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
2-(1-Hydroxyethyl)thiamine pyrophosphate Intermediates CS-ED-39200 20319-27-1 Enquire
Oxo Thiamine O-Diphosphate Intermediates CS-T-60050 59733-97-0 Enquire
Oxythiamine Chloride Intermediates CS-O-15558 582-36-5 In Stock
rac-2-(1-Hydroxyethyl)thiamine Chloride Hydrochloride Intermediates CS-T-79602 14707-32-5 Enquire
Thiamine Impurity 6 Dihydrochloride Intermediates CS-T-01878 874-43-1 In Stock
Thiamine Nitrate Intermediates CS-T-86364 532-43-4 In Stock


Fine Chemicals

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Formylaminopyrimidine Fine Chemicals CS-T-02668 1886-34-6 In Stock
Monophosphothiamine Fine Chemicals CS-ZG-68287 273724-21-3 Enquire
Thiamine monohydrate Fine Chemicals CS-O-30781 Not Available In Stock
Thiamine mononitrate Fine Chemicals CS-O-30785 532-43-4 In Stock