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

Atorvastatin Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
2-Fluoro Atorvastatin Sodium Salt-d5 Stable Isotopes CS-T-97506 Not Available Enquire
2-hydroxy Atorvastatin D5 Stable Isotopes CS-EO-02936 777841-55-1 Enquire
2-Hydroxy Atorvastatin Lactone-d5 Stable Isotopes CS-T-55832 265989-50-2 In Stock
2-Hydroxy Atorvastatin tert-Butyl Ester-d5 Stable Isotopes CS-T-97452 Not Available Enquire
2-Hydroxy Atorvastatin-d5 Calcium Stable Isotopes CS-O-00659 265989-47-7 In Stock
2-Hydroxy Atorvastatin-d5 Disodium Stable Isotopes CS-O-02781 1276537-19-9 In Stock
3-Fluoro Atorvastatin Sodium Salt-d5 Stable Isotopes CS-T-97505 Not Available Enquire
4-hydroxy Atorvastatin D5 Stable Isotopes CS-EO-02935 Not Available Enquire
4-Hydroxy Atorvastatin-d5 Calcium Stable Isotopes CS-O-14019 265989-45-5 In Stock
4-Hydroxy Atorvastatin-d5 Disodium Stable Isotopes CS-O-02780 1276537-18-8(Unlabeled) In Stock
5-Dehydroxy (3S)-Atorvastatin-d5 Stable Isotopes CS-T-101614 Not Available Enquire
Atorvastatin D5 Stable Isotopes CS-EO-02934 749193-45-1 Enquire
Atorvastatin D5 sodium Stable Isotopes CS-CV-00005 134523-01-6 (Unlabelled) Enquire
Atorvastatin-d5 (N-(phenyl-d5) Lactone Stable Isotopes CS-TA-20572 265989-48-8 Enquire
Atorvastatin-d5 Calcium Stable Isotopes CS-O-01265 222412-82-0 In Stock
Atorvastatin-d5 tert-Butyl Ester Stable Isotopes CS-T-97776 Not Available Enquire
tert-Butyl-4-hydroxy Atorvastatin-d5 Stable Isotopes CS-T-100712 Not Available Enquire
(6-{2-[3-(4-Phenylcarbamoyl)-5-(4-fluoro-phenyl)-2-isopropyl... Stable Isotopes CS-T-94380 265989-34-2 Enquire
2-Benzyloxy Atorvastatin-d5 Acetonide tert-Butyl Ester Stable Isotopes CS-T-49020 265989-41-1 Enquire
2-Hydroxy Atorvastatin-D5 Acetonide tert-Butyl Ester Stable Isotopes CS-T-54902 265989-42-2 Enquire
4-Benzyloxy Atorvastatin-d5 Acetonide tert-Butyl Ester Stable Isotopes CS-T-49022 265989-37-5 Enquire
4-Hydroxy Atorvastatin Lactone D5 Stable Isotopes CS-T-55833 265989-49-9 Enquire
4-Hydroxy Atorvastatin-d5 Acetonide tert-Butyl Ester Stable Isotopes CS-T-54918 265989-38-6 Enquire
Atorvastatin sodium salt 13C6 Stable Isotopes CS-EK-02903 134523-01-6 (Unlabelled) Enquire
Atorvastatin-d5 Lactone (4-phenyl-d5) Stable Isotopes CS-O-14387 125995-03-1(Unlabeled) Enquire
Atorvastatin-d5 Sodium Salt Stable Isotopes CS-TA-20565 222412-87-5 Enquire
o-Hydroxyatorvastatin 13C6 Stable Isotopes CS-EK-01949 214217-86-4unlabeled Enquire
p-Hydroxyatorvastatin 13C6 Stable Isotopes CS-EK-00334 214217-88-6 unlabeled Enquire


API

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Atorvastatin API CS-O-07282 134523-00-5 In Stock
Atorvastatin Calcium Salt API CS-O-05661 134523-03-8 In Stock
Atorvastatin Calcium Trihydrate API CS-O-07283 344423-98-9 In Stock
rac-Atorvastatin Calcium API CS-ED-11761 363599-71-7 Enquire


Metabolite

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
2-Hydroxy Atorvastatin bis sodium salt Metabolite CS-O-06085 1581251-44-6 In Stock
2-Hydroxy Atorvastatin Calcium Salt Metabolite CS-O-14020 265989-46-6 In Stock
2-Hydroxy Atorvastatin Lactone Metabolite CS-O-14406 163217-74-1 In Stock
4-Hydroxy Atorvastatin Lactone Metabolite CS-O-07274 163217-70-7 In Stock
2-Hydroxy Atorvastatin Dihydrate Monosodium Salt Metabolite CS-O-07309 1421760-64-6 Enquire
3-Oxo Atorvastatin tert-Butyl Ester Metabolite CS-P-07052 134394-98-2 Enquire
Atorvastatin 3-Oxo Sodium Salt Metabolite CS-P-03226 Not Available Enquire
rac-3-Oxo Atorvastatin Sodium Salt Metabolite CS-O-07265 1391052-00-8 Enquire


Impurity

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(3R,5S)-Atorvastatin Impurity CS-EO-03339 651770-09-1 Enquire
(3R,5S)-Atorvastatin Calcium salt Impurity CS-EO-02022 1312366-79-2 Enquire
(3S,5R)-Atorvastatin Calcium Impurity CS-O-20027 887196-25-0 In Stock
(3S,5S)-Atorvastatin Calcium Salt Impurity CS-T-48403 1105067-88-6 In Stock
(3S,5S)-Atorvastatin Sodium Impurity CS-ED-11746 1428118-38-0 In Stock
(4R,cis)-1,1-Dimethylethyl-6-aminoethyl-2,2-dimethyl-1,3-dio... Impurity CS-T-51151 125995-13-3 In Stock
(4S,6S)-6-(Cyanomethyl)-2,2-dimethyl-1,3-dioxane-4-acetic Ac... Impurity CS-T-51365 196085-85-5 In Stock
2,2-dibromo-1-(4-fluorophenyl)-2-phenylethanone Impurity CS-O-40348 2514955-94-1 In Stock
2,2-dichloro-1-(4-fluorophenyl)-2-phenylethanone Impurity CS-O-37179 1403667-07-1 In Stock
2-Hydroxy Atorvastatin Impurity CS-MM-60170 214217-86-4 Enquire
3-O-methyl Atorvastatin Impurity CS-O-14631 887324-53-0 In Stock
3-OXO ATORVASTATIN Impurity CS-ED-41471 Not Available Enquire
3-Oxo Atorvastatin Calcium Impurity CS-O-15197 887196-30-7(free base) Enquire
4-Hydroxy Atorvastatin Calcium Impurity CS-O-14647 265989-44-4 In Stock
4-Hydroxy Atorvastatin Disodium Salt Impurity CS-O-07266 1276537-18-8 In Stock
4-Hydroxy Atorvastatin Hemicalcium Salt Impurity CS-T-79380 1263176-34-6 In Stock
5-Dehydroxy (3S)-Atorvastatin Impurity CS-T-73405 887196-26-1 In Stock
Atorvastatin 2-Fluoro Analog Impurity CS-P-03224 1346746-49-3 In Stock
Atorvastatin 2-Fluoro t-Butyl Ester Impurity CS-O-15198 1099474-28-8 In Stock
Atorvastatin 3-Deoxyhept-2Z-Enoic Acid Sodium Impurity CS-P-07058 1659317-56-2 Enquire
Atorvastatin 3-Fluoro Analog Impurity CS-P-03225 Not Available In Stock
Atorvastatin Acetonide Impurity CS-O-07276 581772-29-4 In Stock
Atorvastatin Acid Methyl Ester Impurity CS-O-07280 345891-62-5 In Stock
Atorvastatin Acid Sodium salt Impurity CS-EO-03340 134523-01-6 Enquire
Atorvastatin Acid t-Butyl Ester Impurity CS-O-07281 134395-00-9 In Stock
Atorvastatin Amide Impurity Impurity CS-EO-01906 2125501-02-0 In Stock
Atorvastatin Calcium Propylene Glycol Solvate Impurity CS-EO-03347 1040350-07-9 Enquire
Atorvastatin Cyclic (Fluorophenyl) Impurity Impurity CS-P-07054 873950-18-6 In Stock
Atorvastatin Cyclic (Fluorophenyl) Sodium Impurity CS-O-15160 ---- In Stock
Atorvastatin Cyclic Fluorophenyl calcium Salt Impurity Impurity CS-O-49960 873950-18-6(Free Base) Enquire
Atorvastatin Dehydro Acid Sodium Impurity CS-O-07272 1105067-93-3(FreeAcid) In Stock
Atorvastatin Dehydro Lactone Impurity CS-P-07050 442851-50-5 In Stock
Atorvastatin Di-acetonide tert-Butyl Ester Impurity CS-T-102321 1116118-82-1 Enquire
Atorvastatin Diamino impurity Impurity CS-O-47422 2299304-89-3 Enquire
Atorvastatin Diepoxide Calcium Salt Impurity CS-EO-01907 1807481-01-1 In Stock
Atorvastatin Diepoxide Impurity Impurity CS-EO-00023 887470-43-1 In Stock
Atorvastatin EP Impurity A Impurity CS-O-07285 433289-83-9 In Stock
Atorvastatin EP Impurity A (Sodium Salt) Impurity CS-O-36465 1516864-05-3 In Stock
Atorvastatin EP Impurity B Impurity CS-EO-01596 842103-12-2 In Stock
Atorvastatin EP Impurity B Calcium salt Impurity CS-EO-03346 840528-19-0 Enquire
Atorvastatin EP Impurity C Impurity CS-O-07287 693793-53-2 In Stock
Atorvastatin EP Impurity C Sodium salt Impurity CS-EO-03343 1807481-00-0 Enquire
Atorvastatin EP Impurity D Impurity CS-O-07288 148146-51-4 In Stock
Atorvastatin EP Impurity E Sodium Impurity CS-O-07289 501121-34-2 (Free Acid) In Stock
Atorvastatin EP Impurity F Calcium Impurity CS-O-07290 1105067-87-5 In Stock
Atorvastatin EP Impurity G (3-O-methyl Atorvastatin calcium ... Impurity CS-O-07291 887196-29-4 In Stock
Atorvastatin EP Impurity G Sodium Impurity CS-O-41208 ---- In Stock
Atorvastatin EP Impurity H Impurity CS-O-07292 125995-03-1 In Stock
Atorvastatin EP Impurity I Impurity CS-O-07293 125971-95-1 In Stock
Atorvastatin EP Impurity J Impurity CS-P-07051 1105067-93-3 In Stock
Atorvastatin EP Impurity J (Calcium salt) Impurity CS-EO-03344 1105067-93-3 (Freebase) Enquire
Atorvastatin EP Impurity O Sodium salt Impurity CS-EO-03341 887196-30-7 (Freebase) Enquire
Atorvastatin EP Impurity P (Sodium salt) Impurity CS-EO-03342 862260-38-6 Enquire
Atorvastatin EP Impurity P calcium Salt Impurity CS-EO-02282 929540-41-0 Enquire
Atorvastatin EP Impurity Q sodium salt Impurity CS-O-44473 906552-18-9 (Freebase) Enquire
Atorvastatin Epoxy Pyrrolooxazin 6-Hydroxy Analog Impurity CS-P-07053 873950-17-5 In Stock
Atorvastatin epoxy pyrrolooxazin 7-hydroxy analog (3R-Hydrox... Impurity CS-O-34592 873950-18-6 (racemic) In Stock
Atorvastatin Epoxy Pyrrolooxazin 7-Hydroxy Analog Sodium Impurity CS-O-14629 1315629-79-8 In Stock
Atorvastatin Epoxy Pyrrolooxazin Analog (sodium salt) Impurity CS-O-14960 1316291-19-6 In Stock
Atorvastatin Epoxy Pyrrolooxazin Tricyclic Calcium Impurity CS-O-15072 ---- In Stock
Atorvastatin Epoxy Tetrahydrofuran Analog Impurity CS-O-07295 873950-19-7 In Stock
Atorvastatin Ethyl Ester Impurity Impurity CS-O-07278 1146977-93-6 In Stock
Atorvastatin Impurity 17 Impurity CS-EO-01526 666714-64-3 In Stock
Atorvastatin Impurity 40 Impurity CS-O-54388 1198087-00-1 Enquire
Atorvastatin Impurity D ( Mixture of compounds ) Impurity CS-O-49586 Not Available Enquire
Atorvastatin Impurity F Impurity CS-O-14630 887196-24-9 In Stock
Atorvastatin Impurity F Sodium Salt (Amide Impurity) Impurity CS-P-07049 1371615-56-3 In Stock
Atorvastatin Lactam Calcium Salt Impurity Impurity CS-O-16248 148217-40-7 In Stock
Atorvastatin Lactam Sodium Salt Impurity Impurity CS-O-52709 148217-40-7 Enquire
Atorvastatin Lactone Diepoxide Impurity CS-O-14628 1046118-40-4 In Stock
Atorvastatin Oxirane Impurity Impurity CS-P-07064 1246818-88-1 In Stock
Atorvastatin Pyrrolidone Analog Impurity CS-O-34364 906552-18-9 In Stock
Atorvastatin Pyrrolidone Lactone Impurity CS-P-03231 906552-19-0 In Stock
Atorvastatin Strontium Impurity CS-O-60320 1072903-92-4 Enquire
Atorvastatin Tri-acetonide tert-Butyl Ester Impurity CS-O-47424 Not Available Enquire
Atorvastatin Triamino impurity Impurity CS-O-47423 Not Available Enquire
Atorvastatin-4-(4-fluorophenyl)-5-phenyl-1H-pyrrol impurity Impurity CS-O-57668 2409556-78-9 Enquire
Atorvastatin-Amlodipine Adduct Impurity CS-T-93457 425408-16-8 In Stock
Atorvastatin-ATN-2 triamino impurity Impurity CS-O-47425 Not Available Enquire
ATV-XI Impurity CS-O-45747 Not Available Enquire
Defluoro Atorvastatin Impurity CS-ZG-82889 433289-84-0 In Stock
Difluoro Atorvastatin Impurity CS-T-89412 693794-20-6 Enquire
rac-3-Oxo Atorvastatin Calcium Salt Impurity CS-EO-03345 1391194-36-7 (Freebase) Enquire
(3R,5S)-Atorvastatin Acetonide tert-Butyl Ester Impurity CS-TA-20608 947249-30-1 Enquire
(3S,5R)-atorvastatin Impurity CS-EO-01333 887324-52-9 Enquire
(3S,5S)-Atorvastatin Calcium Salt Trihydrate Impurity CS-O-36421 Not Available Enquire
(4S,6R)-6-(Cyanomethyl)-2,2-dimethyl-1,3-dioxane-4-acetic Ac... Impurity CS-T-51366 186508-95-2 Enquire
(R)-7-(2-(4-fluorophenyl)-5-isopropyl-3-phenyl-4-(phenylcarb... Impurity CS-O-40759 Not Available Enquire
2-(1,2-bis(4-fluorophenyl)-2-oxoethyl)-4-methyl-3-oxo-N-phen... Impurity CS-ED-00365 693793-82-7 Enquire
2-Fluoro-alpha-(2-methyl-1-oxopropyl)-gamma-oxo-N,beta-diphe... Impurity CS-T-76320 1797905-42-0 Enquire
2-Hydroxy Atorvastatin tert-Butyl Ester Impurity CS-T-78426 1346599-89-0 Enquire
3-Des Hydroxy Atorvastatin Impurity CS-O-37963 Not Available Enquire
3-Oxo Atorvastatin Methyl Ester Impurity CS-O-07273 2206606-73-5 Enquire
4-Fluoro Atorvastatin Calcium Salt Impurity CS-P-07059 693793-42-9 Enquire
4-Hydroxy Atorvastatin Monosodium Salt Impurity CS-O-06084 163217-71-8 Enquire
5-Oxo Atorvastatin Impurity CS-O-07267 1391052-82-6 Enquire
Allyl Ester of Atorvastatin Cyclic (Fluorophenyl) Impurity Impurity CS-T-48409 1316643-57-8 Enquire
Allyl Ester of Atorvastatin Cyclic (Isopropyl) Impurity Impurity CS-T-48410 1316295-72-3 Enquire
Atorvastatin (3R,5S)-Isomer Sodium Salt Impurity CS-O-07268 131275-93-9 Enquire
Atorvastatin 2-Hydroxy Sodium Impurity CS-EO-00300 163217-75-2 Enquire


Intermediate

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(3R,5R)-6-Cyano-3,5-dihydroxy-hexanoic Acid tert-Butyl Ester Intermediate CS-T-13538 125971-93-9 In Stock
3-ETHYL-5-(2-HYDROXYETHYL)-4-METHYL THIAZOLIUM BROMIDE Intermediate CS-O-10745 54016-70-5 In Stock
4'-Fluoro-2-phenylacetophenone Intermediate CS-AC-09532 347-84-2 In Stock
4-Fluoro-α-(2-methyl-1-oxopropyl)-γ-oxo-N,-β-diphenyl-benzen... Intermediate CS-T-24126 125971-96-2 In Stock
4-Methyl-3-oxo-N-phenyl pentanamide Intermediate CS-O-31956 124401-38-3 In Stock
4-methyl-3-oxo-N-phenyl-2- (phenylmethylene) pentanamide Intermediate CS-O-31957 125971-57-5 In Stock
Defluoro Atorvastatin Acetonide tert-Butyl Ester Intermediate CS-T-74076 1105067-91-1 In Stock


Glucuronide

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
2-hydroxyatorvastatin glucuronide Glucuronide CS-O-54412 ---- Enquire
4-hydroxyatorvastatin glucuronide Glucuronide CS-O-54411 ---- Enquire
Atorvastatin acyl-beta-D-Glucuronide Glucuronide CS-T-48404 463962-58-5 In Stock
2-Hydroxy Atorvastatin Acyl-β-D-glucuronide Glucuronide CS-O-13499 Not Available Enquire


Fine Chemicals

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
1,2-bis(4-fluorophenyl)ethanone Fine Chemicals CS-BX-01008 366-68-7 Enquire
2-Fluoro-2-phenylacetophenone Fine Chemicals CS-MM-06780 77294-82-7 Enquire