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

Prednisolone Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
16a-Methyl(d3)-9,11-dehydro Prednisolone Stable Isotopes CS-T-102981 13209-41-1(Unlabelled) Enquire
17-O-(Acetyl-d3)-6-methylprednisolone Stable Isotopes CS-T-97839 Not Available Enquire
6a,9a-Difluoroprednisolone-17-butyrate-d6 Stable Isotopes CS-B-00273 23640-96-2 (unlabeled) Enquire
6-Alpha-Methyl-Prednisolone-d4 Stable Isotopes CS-BU-00018 ---- Enquire
6-alpha-Methylprednisolone-D6 Stable Isotopes CS-O-14401 83-43-2 (Unlabeled) Enquire
6-alpha-Methylprednisolone-d6 (Major) Stable Isotopes CS-O-60109 83-43-2 (Unlabeled) In Stock
6a-Methylprednisolone-17-Propionate-D6 (major) Stable Isotopes CS-F-00064 79512-61-1(Unlabelled) Enquire
6α-Methyl Prednisolone-d3 3,20-Dioxime Stable Isotopes CS-T-99463 Not Available Enquire
6α-Methyl-20(R)-hydroxy Prednisolone 21-Acetate-d5 Stable Isotopes CS-T-99473 Not Available Enquire
Methylprednisolone 21-Propionate-d5 Stable Isotopes CS-T-99462 Not Available Enquire
Prednisolone 21-Propionate-d5 Stable Isotopes CS-T-94335 5740-62-5(Unlabelled) Enquire
Prednisolone-d4-21-carboxylic Acid Sodium Salt Stable Isotopes CS-T-99444 Not Available Enquire
Prednisolone-d6 Stable Isotopes CS-O-02641 50-24-8 (Unlabeled) In Stock
Prednisolone-d8 (Major) Stable Isotopes CS-T-95525 512165-95-6 (Unlabelled) Enquire
Prednisolone-d8 (Major) 21-β-D-Glucuronide Stable Isotopes CS-T-98412 Not Available Enquire
Prednisolone-d8 (Major) Acetate Stable Isotopes CS-T-95526 52-21-1 (Unlabelled) Enquire
Prednisolone-d8 21-Sulfate Sodium Salt Stable Isotopes CS-T-99124 Not Available Enquire
(11,12,12,6α-Methyl-D6)-Prednisolone Stable Isotopes CS-T-97298 Not Available Enquire
16a-Methyl-d3-9,11-dehydro Prednisolone 21-Acetate Stable Isotopes CS-T-99486 Not Available Enquire
16α-Hydroxyprednisolone-d5 Stable Isotopes CS-O-33707 13951-70-7 (Unlabeled) Enquire
17-Dehydroxy Prednisolone-d8 Stable Isotopes CS-T-99636 Not Available Enquire
20-Hydroxy Prednisolone-D8 Stable Isotopes CS-T-99513 Not Available Enquire
6a-Methyl Prednisolone-d3 (Major) Stable Isotopes CS-T-99467 Not Available Enquire
6a-Methylprednisolone-21-Acetate-D6 (major) Stable Isotopes CS-F-00061 Not Available Enquire
6β-Methyl Prednisolone 17-Hemisuccinate-d4 (major) Stable Isotopes CS-T-99466 Not Available Enquire
6β-Methylprednisolone Hemisuccinate-d3 Stable Isotopes CS-T-99465 Not Available Enquire
6β-Methylprednisolone-d3 Stable Isotopes CS-T-99464 Not Available Enquire
6β-Μethyl Prednisolone-d3 21-Acetate Stable Isotopes CS-T-97301 Not Available Enquire
9α-Fluoroprednisolone 17-Valerate-d9 Stable Isotopes CS-T-99550 Not Available Enquire
Prednisolone 17-(Ethyl Carbonate) 21-Acetate-d3 Stable Isotopes CS-T-99443 Not Available Enquire
Prednisolone 21-Dimethylamine-d6 Stable Isotopes CS-T-99441 Not Available Enquire
Prednisolone D8 Acetate Stable Isotopes CS-O-15754 52-21-1 (Unlabeled) Enquire
Prednisolone Hemisuccinate-d8 Stable Isotopes CS-T-99442 Not Available Enquire


API

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Hydrocortisone API CS-O-10249 50-23-7 In Stock
Methylprednisolone API CS-O-06007 83-43-2 In Stock
Methylprednisolone Aceponate API CS-O-01830 86401-95-8 In Stock
Methylprednisolone hydrogen succinate API CS-O-01851 2921-57-5 In Stock
Prednisolone API CS-O-02063 50-24-8 In Stock
Prednisolone Acetate API CS-O-02113 52-21-1 In Stock
Prednisolone phosphate API CS-O-02090 302-25-0 In Stock
Prednisolone sodium phosphate API CS-O-02137 125-02-0 Enquire
Prednisolone Acetate API CS-O-11052 Not Available Enquire
Prednival API CS-L-00018 15180-00-4 Enquire


Metabolite

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
14-α-Hydroxy Prednisolone Metabolite CS-T-56388 95815-58-0 Enquire
6a-Methyl Prednisolone 21-Acetate Metabolite CS-T-58553 53-36-1 In Stock
Prednisolone 21-Sulfate Sodium Salt Metabolite CS-T-60722 3664-95-7 In Stock


Impurity

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(11β)-11,20-dihydroxy-3-oxo-pregna-1,4-dien-21-oic acid ( Mi... Impurity CS-O-34746 75448-52-1 In Stock
(Z)-2-hydroxy-2-((8S,9S,10R,11S,13S,14S)-11-hydroxy-10,13-di... Impurity CS-O-38768 118864-87-2 Enquire
1,2-Dihydro 11-Keto Methylprednisolone Impurity CS-O-44228 1746-38-9 Enquire
11-Alpha-hydroxyprednisolone sodium phosphate Impurity CS-EO-01278 ---- Enquire
11-Alpha-Methylprednisolone Impurity CS-O-50148 105500-05-8 Enquire
16a-Butyloxyprednisolone (Budenoside Impurity) Impurity CS-T-50101 113930-13-5 In Stock
16alpha-Hydroxyprednisolone Impurity CS-O-00864 13951-70-7 In Stock
16-Beta-17-Alpha Hydroxy Prednisolone Impurity CS-O-42674 2408699-72-7 Enquire
17-Dehydroxy Prednisolone Impurity CS-T-14972 13479-38-4 In Stock
17-Deshydroxyacetyl 17-Carbonyl Prednisolone Impurity CS-T-96043 167997-18-4 Enquire
17-Hydroxypregna-1,4-diene-3,20-dione Impurity CS-O-45221 2477-61-4 Enquire
20 β-hydroxy-6-α-methyl Prednisolone Impurity CS-O-16490 103574-57-8 In Stock
20 β-hydroxymethyl Prednisolone Impurity CS-O-16489 387-66-6 In Stock
6 α,9α-difluoro prednisolone 17,21-Trimethylortobutyrate Impurity CS-O-51132 23640-92-8 Enquire
6a-Fluoro-16a-Hydroxyprednisolone Impurity CS-F-00217 3915-36-4 Enquire
6alpha-​hydroxyprednisolone Impurity CS-O-44164 95909-33-4 Enquire
6a-Methyl Prednisolone 17-Hemisuccinate Impurity CS-T-80702 77074-42-1 In Stock
6a-Methyl Prednisolone 17-Propionate Impurity CS-T-80696 79512-61-1 In Stock
6a-Methyl Prednisolone Propionate 17-carboxylic acid Impurity CS-O-51826 Not Available Enquire
6-beta-methylprednisolone aceponate Impurity CS-O-51824 ---- Enquire
6-methylene prednisolone aceponate Impurity CS-O-51827 Not Available Enquire
6α-chloro-9-fluoro prednisolone Impurity CS-O-53022 806-27-9 Enquire
6α-fluoro-9-chloro prednisolone Impurity CS-O-53021 Not Available Enquire
6α-hydroxy-9-fluoro prednisolone Impurity CS-O-53020 1296177-39-3 Enquire
6-β-Hydroxy Prednisolone Impurity CS-T-56387 16355-29-6 Enquire
9 α-Fluoro prednisolone 17,21-Trimethylortobutyrate Impurity CS-O-51131 Not Available Enquire
9 α-Fluoro prednisolone 17-butyrate Impurity CS-O-51127 Not Available Enquire
9-Alpha-Fluro-21-Chlorine,prednisolone-17-propioinate Impurity CS-O-58192 ---- Enquire
9α-Fluoro Prednisolone 17-Butyrate-21-acetate Impurity CS-O-51129 Not Available Enquire
Delta-9,11-Methylprednisolone Acetate Impurity CS-O-33125 93239-37-3 In Stock
Deltacortinene Acetate Impurity CS-T-15069 4380-55-6 In Stock
Deoxyprednisolone-16-ene Impurity CS-O-13256 3103-17-1 In Stock
Isoflupropedone-21 phosphate Impurity CS-EO-03781 432-44-0 Enquire
Methyl Prednisolone Sulfate Triethyl Amine Impurity CS-O-36742 1127921-81-6 In Stock
Methylprednisolone EP Impurity D Impurity CS-EO-00460 1338549-02-2 Enquire
Methylprednisolone EP Impurity D (E-Isomer) Impurity CS-T-53229 ---- Enquire
Methylprednisolone EP Impurity D (Z-Isomer) Impurity CS-O-49403 1338549-02-2 Enquire
Methylprednisolone Hemisuccinate β isomer Impurity CS-O-34377 Not Available In Stock
Prednienic Acid Impurity CS-T-60717 37927-29-0 In Stock
Prednisolone 11,21-Diacetate Impurity CS-T-84041 98523-85-4 In Stock
Prednisolone 17-beta hydroxyacid Impurity CS-O-57887 95671-46-8 Enquire
Prednisolone 21-Dimethylamine Impurity CS-SN-00149 Not Available Enquire
Prednisolone 21-formate Impurity CS-O-13290 2141-22-2 In Stock
Prednisolone Aldehyde Impurity Impurity CS-O-54923 ---- Enquire
Prednisolone Dehydrated (Ether form) Impurity CS-O-36057 96168-88-6 In Stock
Prednisolone D-Homo A derivative Impurity CS-EO-00433 95615-71-7 Enquire
Prednisolone D-homo B Derivative Impurity CS-EO-00394 ---- Enquire
Prednisolone Dicarbonate Impurity CS-P-08480 1428883-48-0 Enquire
Prednisolone EP Impurity A Hydrochloride Impurity CS-EO-03780 393782-60-0 Enquire
Prednisolone EP Impurity F Impurity CS-T-53958 600-90-8 Enquire
Prednisolone EP Impurity J Impurity CS-T-15501 1807-14-3 In Stock
Prednisolone Impurity 11 Impurity CS-O-59866 118866-09-4 Enquire
Prednisolone Impurity 16 Impurity CS-EO-01166 Not Available Enquire
Prednisolone Impurity 2 Impurity CS-O-44180 Not Available Enquire
Prednisolone Impurity 20 Impurity CS-TA-88683 68791-68-4 In Stock
Prednisolone Impurity 26 Impurity CS-O-54709 118864-88-3 Enquire
Prednisolone Sodium Phosphate 11-Phospahte Impurity CS-EO-00032 ---- In Stock
Prednisolone Sodium Phosphate USP Impurity E Impurity CS-O-44214 Not Available Enquire
Prednisolone-17-propionate Impurity CS-O-51822 50718-16-6 Enquire
Prednisone sodium phosphate Impurity CS-T-78741 33903-70-7 Enquire
(8S,9S,10R,11S,13S,14S)-11-hydroxy-10,13-dimethyl-17-(4-meth... Impurity CS-O-38769 Not Available Enquire
(8S,9S,10R,11S,13S,14S)-11-hydroxy-10,13-dimethyl-3-oxo-6,7,... Impurity CS-O-38767 Not Available Enquire
(8S,9S,10R,11S,13S,14S)-11-hydroxy-17-(4-(hydroxymethyl)-1,3... Impurity CS-O-38766 Not Available Enquire
11-oxo-methylprednisolone hemisuccinate Impurity CS-O-36576 Not Available Enquire
16α,17-Epoxy-11β,21-dihydroxy-pregna-1,4-diene-3,20-dione Impurity CS-T-92294 111186-92-6 Enquire
16α-Hydroxyprednisolone Acetate Impurity CS-T-93988 86401-80-1 Enquire
17-O-Acetyl-6-methylprednisolone Impurity CS-T-64561 86401-94-7 In Stock
17α,21-Dideoxy-6α,9α-Difluoroprednisolone Impurity CS-T-91232 167997-12-8 Enquire
20-Deoxo-20ß-hydroxy-6α-Methyl Prednisolone Impurity CS-T-73743 387-65-5 Enquire
20-Dihydroprednisolonic Acid Impurity CS-T-53019 62358-12-7 Enquire
21-Dehydro Prednisolone Impurity CS-T-51793 22420-16-2 Enquire
21-Dehydro-16a-hydroxy Prednisolone Impurity CS-T-51776 1188271-73-9 Enquire
5β-4,5-Dihydro Prednisolone 21-Acetate Impurity CS-T-91694 114127-54-7 Enquire
6a,9a-Difluoroprednisolone Impurity CS-T-52911 806-29-1 Enquire
6a,9a-Difluoroprednisolone 21-Acetate Impurity CS-T-52917 52-70-0 Enquire
6a-9-Difluoroprednisolone-17-Carboxylate Impurity CS-T-89617 1234557-20-0 Enquire
6a-Hydroxy Prednisolone Acetate Impurity CS-T-56373 134526-05-9 Enquire
6alpha,9-Difluoro-11beta,17,21-trihydroxypregna-1,4-diene-3,... Impurity CS-ZH-15663 23641-05-6 Enquire
6a-Methyl Prednisolone 17,21-(Ethyl)orthopropionate Impurity CS-T-80141 85198-27-2 Enquire
6a-Methyl Prednisolone 21-Sulfate Ester Impurity CS-T-82450 1127921-80-5 Enquire
6B-methylprednisolone hemisuccinate Impurity CS-O-36575 2376134-25-5 Enquire
6-Dehydro Prednisolone Impurity CS-ZG-77365 2427-64-7 Enquire
6α,​9α-​Difluoroprednisolone 21-Butyrate Impurity CS-T-93416 Not Available Enquire
6α-Methyl-20(R)-hydroxy Prednisolone 21-Acetate Impurity CS-T-82346 93963-74-7 Enquire
6-β-Methyl Prednisolone 21-Acetate Impurity CS-T-58554 1048031-82-8 Enquire
6-β-Methylprednisolone Impurity CS-T-58623 18462-27-6 Enquire
9a-Fluoro-6a-methylprednisolone 21-Acetate Impurity CS-T-74540 432-33-7 Enquire
9-Fluoroprednisolone 21-valerate Impurity CS-O-43747 68791-51-5 Enquire
D-Homo-16-alphahydroxy prednisolone Impurity CS-EO-01003 Not Available Enquire
Difluoroprednisolone-17, 21-Diacetate Impurity CS-P-02379 23641-05-6 Enquire
Dimer Methylprednisolone Impurity CS-T-93546 Not Available Enquire
Isoflupredone 21-Phosphate Ester Disodium Salt Impurity CS-O-16880 94088-00-3 Enquire
Methyl Prednisolone sulfate Impurity CS-O-14860 Not Available Enquire
Methylprednisolone Acetate EP Impurity D Impurity CS-EO-00457 150899-33-5 Enquire
Methylprednisolone Acetate EP Impurity F Impurity CS-EO-00458 Not Available Enquire
Methylprednisolone Acetate EP Impurity H Impurity CS-EO-00459 1968-76-9 Enquire
Methylprednisolone acetate impurity Impurity CS-O-39328 Not Available Enquire
Methylprednisolone Dimer impurity Impurity CS-T-94057 Not Available Enquire
Methylprednisolone EP Impurity B Impurity CS-EO-00130 Not Available Enquire
Methylprednisolone methyl-hemisuccinate Impurity CS-O-36560 Not Available Enquire


Intermediate

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
16a-Methyl Prednisolone Intermediate CS-T-58586 10417-63-7 In Stock
16a-Methyl-11-oxo Prednisolone Intermediate CS-T-58080 2036-77-3 In Stock
21-Deoxyprednisolone Intermediate CS-T-52014 20423-99-8 In Stock
Prednisolone Pivalate Intermediate CS-T-84168 1107-99-9 In Stock


Glucuronide

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Allo-3-alpha-tetrahydro cortisol 21-O-beta-D-glucuronide Glucuronide CS-T-47539 131061-62-6 Enquire
Prednisolone 21-β-D-Glucuronide Glucuronide CS-T-60721 512165-95-6 In Stock
6a-Methyl Prednisolone 21-O-ß-D-Glucuronide Glucuronide CS-T-82706 805219-19-6 Enquire
Methylprednisolone Glucuronide Glucuronide CS-O-14859 Not Available Enquire


Secondary Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
11-epi-Prednisolone Secondary Standards CS-SS-25804-50MG 600-90-8 Enquire
Methylprednisolone Secondary Standards CS-SS-24669-500MG 83-43-2 Enquire
Methylprednisolone Acetate Secondary Standards CS-SS-24670-500MG 53-36-1 Enquire
Methylprednisolone Hemisuccinate Related Compound D Secondary Standards CS-SS-25755-100MG 119657-85-1 Enquire
Methylprednisolone Related Compound C Secondary Standards CS-SS-25754-50MG 61919-52-6 Enquire
Prednisolone Secondary Standards CS-SS-24099-500MG 50-24-8 Enquire
Prednisolone Acetate Secondary Standards CS-SS-24597-1GM 52-21-1 Enquire
Prednisolone Impurity G Secondary Standards CS-SS-25206-30MG Not Available Enquire
Prednisolone Impurity H Secondary Standards CS-SS-25375-50MG 2427-64-7 Enquire
Prednisolone Impurity I Secondary Standards CS-SS-25376-50MG 13479-38-4 Enquire
Prednisolone Sodium Phosphate Secondary Standards CS-SS-25568-500MG 125-02-0 Enquire
Prednisolone sodium phosphate Secondary Standards CS-SS-26643 125-02-0 Enquire
Prednisolone Tebutate Secondary Standards CS-SS-25919-500MG 7681-14-3 Enquire


Therapeutic

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
6alpha,9alpha-Difluoroprednisolone 17-Acetate Therapeutic CS-T-52912 23674-85-3 Enquire
Methylprednisolone Acetate EP Impurity C Therapeutic CS-T-51768 58636-50-3 Enquire
Methylprednisolone Sodium Succinate Therapeutic CS-O-31166 2375-03-3 In Stock