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

Folic Acid Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
10-Formyl Folic Acid-d4 Stable Isotopes CS-T-74422 461426-41-5 Enquire
10-Formyltetrahydrofolate D4 Stable Isotopes CS-O-52422 1359841-83-0 Enquire
4,5,6,7-Tetrahydro 2-Acetamido Folic Acid Bismethyl Ester-d4 Stable Isotopes CS-T-99805 Not Available Enquire
5-(Methyl-d3)tetrahydrofolic acid Stable Isotopes CS-EO-02382 1356019-97-0 Enquire
5-(Methyl-d3)tetrahydrofolic Acid Calcium Salt (Mixture of D... Stable Isotopes CS-T-99984 26560-38-3(Unlabelled) Enquire
5,10-Diformyl-5,6,7,8-tetrahydro Folic Acid-D4 Calcium Salt ... Stable Isotopes CS-T-101537 Not Available Enquire
5-formyltetrahydrofolic acid 13C6 Stable Isotopes CS-EK-02254 212248-94-7 Enquire
5-Methyltetrahydrofolic acid 13C6 Stable Isotopes CS-EK-02865 212248-92-5 Enquire
5-Methyltetrahydrofolic acid D4 Stable Isotopes CS-P-08364 461426-39-1 Enquire
5-Methyltetrahydrofolic acid-(glutamic acid-13C5) Stable Isotopes CS-BX-00263 1207282-74-3 Enquire
5-Methyltetrahydrofolic Acid-[13C5] Stable Isotopes CS-I-00406 1207282-74-3 Enquire
5-Methyltetrahydrofolic acid-13C Stable Isotopes CS-CX-00016 1356019-94-7 In Stock
Dehydro Folic Acid 1,5-Dimethyl Ester-13C5 Stable Isotopes CS-T-102493 319919-60-3(Unlabelled) Enquire
Dihydro Folic Acid-D4 (Technical Grade) Stable Isotopes CS-T-101516 Not Available Enquire
Folic Acid 13C1 Stable Isotopes CS-T-100288 Not Available Enquire
Folic Acid D2 Stable Isotopes CS-T-55010 69022-87-3 Enquire
Folic Acid D4 Stable Isotopes CS-T-55008 171777-72-3 Enquire
Folic acid disodium salt 13C6 Stable Isotopes CS-EK-00229 161406-20-8 free acid Enquire
Folic acid-13C5 Stable Isotopes CS-T-55009 1207282-75-4 In Stock
Levomefolic Acid-d3 Stable Isotopes CS-O-01250 31690-09-2(Unlabeled) In Stock
L-Tetrahydrofolic Acid-d4 (Major) (>70% when packaged) Stable Isotopes CS-T-86674 1356841-72-9 Enquire
N-Acetyl Folic Acid-d4 Stable Isotopes CS-T-47241 461426-36-8 Enquire
N-Nitroso Folic Acid-d4 Stable Isotopes CS-O-42067 26360-21-4 (Unlabeled) In Stock
Tetrahydrofolic acid 13C5 Stable Isotopes CS-EK-00554 135-16-0 unlabeled Enquire
Tetrahydrofolic acid 13C6 Stable Isotopes CS-EK-01322 212248-88-9 Enquire


API Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Folcidin API Standards CS-ZG-78821 65165-92-6 Enquire
Folic Acid API Standards CS-O-11653 59-30-3 In Stock
Folic acid dihydrate API Standards CS-T-76592 75708-92-8 Enquire
Folic Acid Hydrate API Standards CS-EO-03575 1174277-30-5 Enquire
Grifolic Acid API Standards CS-T-25682 80557-12-6 Enquire
Homofolic Acid API Standards CS-T-78163 3566-25-4 Enquire


Metabolites

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Dimethyltetrahydrofolic acid Metabolites CS-EO-00253 3029091-15-1 Enquire


Impurities

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(6R)-5-MethylTetrahedropteroic Acid Impurities CS-O-45624 Not Available Enquire
(6S)-Tetrahydrofolic Acid Impurities CS-T-61821 71963-69-4 Enquire
10-[(3-Methanethiosulfonyl)-1-propionyl] Folic Acid Impurities CS-T-80910 1346617-38-6 Enquire
10-formyl dihydrofolic acid Impurities CS-O-35801 Not Available Enquire
10-Formylfolic acid Impurities CS-O-32559 134-05-4 In Stock
5-(Alpha-Folinilamido) Tetrahydrofolic Acid Impurities CS-O-38646 Not Available Enquire
5-(gamma-folinilamido) tetrahydrofolic acid Impurities CS-O-35692 Not Available Enquire
5-(gamma-folinyl)tetrahydrofolate Impurities CS-O-45472 Not Available Enquire
5,10-Methenyltetrahydrofolic acid Impurities CS-ED-00617 7444-29-3 Enquire
5,6,7,8-Tetrahydro-5,10-dimethylfolic acid Impurities CS-O-53895 1553-43-1 Enquire
5-Methyltetrahydrofolic acid Impurities CS-ED-41528 39605-23-7 Enquire
5-Methyltetrahydropteroic acid Impurities CS-O-42722 Not Available Enquire
6-Pterinyl Folic Acid Impurities CS-T-40937 1391068-26-0 Enquire
9-Oxofolic Acid Impurities CS-T-38286 39707-61-4 In Stock
Calcium-D-5-Methyltetrahydrofolic acid Impurities CS-O-42723 301298-88-4 In Stock
Cis 2-(1,6-dimethylpiperidine-3-yl)propan-2-ol Impurities CS-O-42724 2057-26-3 Enquire
D-Folic Acid Impurities CS-T-76757 65165-91-5 In Stock
Ferrous Sulphate & Folic acid pellets Impurities CS-DT-00027 Not Available Enquire
Folic Acid EP Impurity E Impurities CS-O-14384 1391068-26-0 Enquire
Folic Acid EP Impurity F Impurities CS-O-14383 1391194-56-1 Enquire
Folic Acid Impurity 11 Impurities CS-O-58970 82778-08-03 Enquire
Folic Acid Impurity 27 Impurities CS-O-59697 56364-06-8 Enquire
Folic acid Impurity 3 Impurities CS-EO-01030 Not Available Enquire
Folic acid Impurity 4 Impurities CS-EO-01031 Not Available Enquire
Folic acid Impurity 8 Impurities CS-EO-00895 2305206-68-0 Enquire
Folic acid Impurity A Impurities CS-O-31067 4271-30-1 In Stock
Folic Acid Impurity B Impurities CS-P-06960 35011-47-3 Enquire
Folic Acid Impurity B Impurities CS-O-31108 1004-75-7 In Stock
Folic acid impurity D Impurities CS-O-11076 119-24-4 In Stock
Folic acid impurity G Impurities CS-O-33082 2734707-85-6 In Stock
Folic acid impurity H Impurities CS-O-33083 2366274-27-1 Enquire
Folic Acid NHS Ester (~90% ) Impurities CS-T-74880 153445-05-7 Enquire
Isofolic acid Impurities CS-O-10148 47707-78-8 In Stock
Levomefolic acid Impurities CS-MM-12166 31690-09-2 Enquire
N-Nitroso 2-Deamino-2-hydroxyfolic acid Impurities CS-O-46534 Not Available In Stock
Pyrazino-s-triazine derivative (Mefox) Impurities CS-T-93507 79573-48-1 Enquire
Tetrahydrofolic Acid Impurities CS-T-43690 135-16-0 Enquire
trans 2-(1,6-Dimethylpiperidin-3-yl)propan-2-ol Impurities CS-O-42725 2057-25-2 Enquire


EP Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Folic acid for impurity I Identification (Y0001980) EP Standards CS-EG-00791 59-30-3 Enquire
Folic acid for system suitability(Y0001979) EP Standards CS-EG-00757 Not Available Enquire
Folic acid(F0300000) EP Standards CS-EG-00729 59-30-3 Enquire


Intermediates

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
10-Formyl-5,6,7,8-tetrahydro Folic Acid Intermediates CS-T-76549 2800-34-2 Enquire
Dihydro Folic Acid Intermediates CS-T-18974 4033-27-6 In Stock
Folic acid 13C6 Intermediates CS-O-45977 161406-20-8 Enquire
Folic Acid Sulfosuccinimidyl Ester Sodium Salt Intermediates CS-T-74336 1572180-79-0 Enquire


Fine Chemicals

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
CS-O-32319 Fine Chemicals CS-TC-02113 68792-52-9 Enquire


Pesticide Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Rubifolic acid Pesticide Standards CS-BT-00556 80489-65-2 Enquire