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

Ascorbic Acid Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Ascorbic acid-13C6 Stable Isotopes CS-O-10050 1354064-87-1 In Stock
Ascorbic Acid-d4 Stable Isotopes CS-P-08526 Not Available Enquire
L-[1,2-13C2]ascorbic acid Stable Isotopes CS-OC-00050 50-81-7 (unlabeled) Enquire
L-[1,3-13C2]ascorbic acid Stable Isotopes CS-OC-00049 50-81-7 (unlabeled) Enquire
L-[1,6-13C2]ascorbic acid Stable Isotopes CS-OC-00313 50-81-7 (unlabeled) Enquire
L-[3-13C]ascorbic acid Stable Isotopes CS-OC-00052 50-81-7 (unlabeled) Enquire
L-[5,6-18O2]ascorbic acid Stable Isotopes CS-OC-00311 50-81-7 (unlabeled) Enquire
L-[5-13C]ascorbic acid Stable Isotopes CS-OC-00051 50-81-7 (unlabeled) Enquire
L-[6,6'-D2]ascorbic acid Stable Isotopes CS-OC-00312 50-81-7 (unlabeled) Enquire
L-Ascorbic acid 13C6 Stable Isotopes CS-EK-02305 50-81-7 unlabeled Enquire
L-Ascorbic Acid 2-(Dihydrogen Phosphate) Cyclohexanamine 13C... Stable Isotopes CS-T-48374 82134-96-1 Enquire
L-Ascorbic acid-1 13C Stable Isotopes CS-T-48370 178101-88-7 In Stock
L-Ascorbic Acid-13C6 Stable Isotopes CS-T-95656 1331939-77-5 Enquire
L-Ascorbic Acid-2 13C Stable Isotopes CS-T-48371 178101-89-8 Enquire
L-Ascorbic Acid-6 13C Stable Isotopes CS-T-48372 149153-08-2 Enquire
L-Dehydro Ascorbic Acid-13C6 Stable Isotopes CS-T-73101 1217529-45-7 Enquire


API Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Ascorbic acid API Standards CS-O-00843 50-81-7 In Stock


Metabolites

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Ascorbic Acid 3-Sulfate Metabolites CS-P-07069 22430-27-9 Enquire


Impurities

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
2-Keto-L-Gulonic Acid Impurities CS-P-08525 526-98-7 Enquire
2-O-Ethyl-L-ascorbic Acid Impurities CS-O-56891 112894-37-8 Enquire
Ascorbic acid EP Imp-E (Oxalic acid) Impurities CS-T-38166 144-62-7 In Stock
Ascorbic Acid EP Impurity A Impurities CS-T-24964 98-01-1 In Stock
Ascorbic Acid EP Impurity B Impurities CS-O-14292 Not Available Enquire
Ascorbic Acid EP Impurity C Impurities CS-T-62791 16533-48-5 In Stock
Ascorbic Acid EP Impurity D Impurities CS-T-57007 67776-07-2 In Stock
Ascorbic Acid EP Impurity F Impurities CS-T-21939 89-65-6 In Stock
Ascorbic Acid EP Impurity G Impurities CS-O-14290 66757-69-5 In Stock
Ascorbic Acid EP Impurity H Impurities CS-O-14291 122046-79-1 Enquire
Ascorbic Acid Impurity 6 (L-xylo-2-Hexulopyranosonic acid) Impurities CS-P-08524 2073888-75-0 Enquire
Ascorbyl tetraisopalmitate Impurities CS-P-07190 183476-82-6 Enquire
Dehydro Ascorbic Acid (threo-2,3-Hexodiulosonic Acid, gama-l... Impurities CS-P-07068 33124-69-5 Enquire
Dehydro-L-(+)-ascorbic acid dimer Impurities CS-BX-01020 72691-25-9 Enquire
Ferrous Ascorbate Impurities CS-O-40904 24808-52-4 Enquire
L-Dehydro Ascorbic Acid Impurities CS-T-14824 490-83-5 In Stock
Magnesium Ascorbic Acid Phosphate and Ciprofloxacin Hydrochl... Impurities CS-O-13254 Not Available Enquire


EP Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Ascorbic acid (A1300000) EP Standards CS-EG-00896 50-81-7 In Stock
Ascorbic Acid EP Impurity D(Y0001170) EP Standards CS-EG-03254 67776-07-2 Enquire
Ascorbic acid impurity C (Y0001024) EP Standards CS-EG-00120 21675-47-8 In Stock
Ascorbic acid impurity D (Y0001170) EP Standards CS-EG-00121 Not Available In Stock


Intermediates

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
2-Phospho-L-ascorbic Acid Trisodium Salt Intermediates CS-T-83885 66170-10-3 In Stock
Ascorbic Acid Acetonide Intermediates CS-T-48373 15042-01-0 Enquire
L-Ascorbic acid 2-phosphate magnesium salt Intermediates CS-CG-00009 113170-55-1 In Stock
L-Ascorbic acid 2-phosphate magnesium salt hydrate Intermediates CS-ED-11645 1713265-25-8 In Stock


Glucuronides

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
D-glucaro-1,4-lactone Glucuronides CS-ED-00787 389-36-6 Enquire


Fine Chemicals

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(3S,4R,5S)-Methyl 3,4,5,6-Tetrahydroxy-2-Oxohexanoate Fine Chemicals CS-MM-09471 3031-98-9 In Stock
2-Keto-D-gulonic Acid Fine Chemicals CS-T-57006 21675-47-8 In Stock
2-O-Octadecylascorbic acid Fine Chemicals CS-ED-01557 98829-12-0 Enquire
D-Ascorbic acid Fine Chemicals CS-ED-02046 10504-35-5 Enquire
L-isoascorbic acid Fine Chemicals CS-ED-01880 26094-91-7 Enquire
Sulfur Trioxide-Triethylamine Complex Fine Chemicals CS-O-15626 761-01-3 In Stock


Building Blocks

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Sodium Ascorbate Building Blocks CS-O-02296 134-03-2 In Stock