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

Tacrolimus Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
13-O-Desmethyl Tacrolimus-13CD4 Stable Isotopes CS-O-47411 139958-51-3 (Unlabelled) Enquire
8-epi-Tacrolimus-13CD2 Stable Isotopes CS-O-58223 129212-35-7(Unlabelled) Enquire
Tacrolimus-13C Stable Isotopes CS-O-49017 Not Available In Stock
Tacrolimus-13C Stable Isotopes CS-O-03122 1356841-89-8 In Stock
Tacrolimus-13C,d4 Stable Isotopes CS-O-13614 104987-11-3 (Unlabeled) In Stock
Tacrolimus-d3 Stable Isotopes CS-O-48661 104987-11-3 (Unlabeled) In Stock
Tacrolimus-d5 Stable Isotopes CS-O-49019 Not Available In Stock


API Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Ascomycin API Standards CS-O-00842 104987-12-4 In Stock
Tacrolimus API Standards CS-O-30787 104987-11-3 In Stock
Tacrolimus Monohydrate API Standards CS-O-08223 109581-93-3 In Stock


Metabolites

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
15-O-Desmethyl Tacrolimus Metabolites CS-O-14039 151039-41-7 Enquire
Desmethyl Tacrolimus Metabolites CS-O-14037 132172-14-6 Enquire
Tacrolimus 31 DMT Metabolites CS-O-14038 135635-47-1 Enquire
Tacrolimus M-IV Metabolites CS-O-44215 Not Available Enquire


Impurities

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
10-demetyl Tacrolimus Impurities CS-O-33831 Not Available Enquire
13-O-Desmethyl tacrolimus Impurities CS-O-39562 139958-51-3 In Stock
8-Epitacrolimus Impurities CS-T-53956 129212-35-7 In Stock
Oxacyclohexane Open Ring Tacrolimus Impurities CS-ED-00227 144432-23-5 In Stock
Tacrolimus 19-epimer Impurities CS-T-54072 144490-63-1 In Stock
Tacrolimus 20-ethoxy acetal Impurities CS-O-53684 Not Available In Stock
Tacrolimus 21-carboxylic acid Impurities CS-O-33256 Not Available Enquire
Tacrolimus 8-Propyl Analog Impurities CS-O-08221 104987-30-6 In Stock
Tacrolimus alpha-Hydroxy Acid (TAC-H1) Impurities CS-P-08636 Not Available Enquire
Tacrolimus Butenyl analogue Impurities CS-O-51456 1262804-11-4 Enquire
Tacrolimus Dehydro Impurity Impurities CS-EO-00669 129212-37-9 In Stock
Tacrolimus Diene Impurities CS-P-00144 104987-16-8 In Stock
Tacrolimus EP Impurity B Impurities CS-EO-01090 Not Available Enquire
Tacrolimus EP Impurity C Impurities CS-O-57264 Not Available Enquire
Tacrolimus EP Impurity F Impurities CS-EO-01091 Not Available Enquire
Tacrolimus EP Impurity H Impurities CS-P-08338 143210-33-7 Enquire
Tacrolimus Impurity 18 Impurities CS-P-08339 129039-81-2 Enquire
Tacrolimus Impurity 2 Impurities CS-T-54717 131944-48-4 In Stock
Tacrolimus Impurity 21 Impurities CS-P-08962 Not Available Enquire
Tacrolimus Impurity 23 Impurities CS-P-08961 Not Available Enquire
Tacrolimus Impurity 39 Impurities CS-O-38229 Not Available Enquire
Tacrolimus Impurity 6 (Tacrolimus Hydroxy Acid Impurity) Impurities CS-P-02134 1700657-83-5 In Stock
Tacrolimus Impurity III Impurities CS-P-08639 127984-76-3 Enquire
Tacrolimus Impurity VII Impurities CS-EO-01009 Not Available Enquire
Tacrolimus impurity-1 Impurities CS-T-59735 123719-19-7 Enquire
Tacrolimus Intermediate-1 Impurities CS-O-59632 217480-91-6 Enquire
Tacrolimus Lactone Isomer Impurities CS-O-08222 134590-88-8 Enquire
Tacrolimus Methyl Acryl Aldehyde Impurities CS-T-61570 109466-74-2 Enquire
Tacrolimus Regioisomer Impurities CS-O-34798 Not Available Enquire
Tacrolimus Related Compound A Impurities CS-O-35447 135635-46-0 In Stock
Tacrolimus Ring-opening Impurity Impurities CS-P-08282 1393890-33-9 In Stock


EP Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Tacrolimus for system suitability (Y0001933) EP Standards CS-EG-01239 Not Available Enquire
Tacrolimus monohydrate (Y0001926) EP Standards CS-EG-02488 109581-93-3 Enquire