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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 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


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


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,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 Enquire
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-(4-Fluorophenyl)-5-hydroxy-3-isobutyryl-1,4-diphenyl-1,5-d... Impurity CS-O-60608 ---- Enquire
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-Fluoro Analog Impurity CS-P-03225 Not Available Enquire
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 (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 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 Enquire
Atorvastatin EP Impurity G Sodium Impurity CS-O-41208 ---- 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 7-hydroxy analog (3R-Hydrox... Impurity CS-O-34592 873950-18-6 (racemic) 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 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 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
(4S,6R)-6-(Cyanomethyl)-2,2-dimethyl-1,3-dioxane-4-acetic Ac... Impurity CS-T-51366 186508-95-2 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
3-Des Hydroxy Atorvastatin Impurity CS-O-37963 Not Available Enquire
5-Oxo Atorvastatin Impurity CS-O-07267 1391052-82-6 Enquire
Atorvastatin (3R,5S)-Isomer Sodium Salt Impurity CS-O-07268 131275-93-9 Enquire
Atorvastatin 3-Deoxy-Hept-2-Enoic Acid Ethyl Ester Impurity CS-O-07271 1624328-52-4 Enquire
Atorvastatin Acetonide Methyl Ester Impurity CS-O-15340 1353049-81-6 Enquire
Atorvastatin diacid impurity Impurity CS-T-68872 1821498-27-4 Enquire
Atorvastatin Diketoene Impurity Impurity CS-P-07061 1331869-19-2 Enquire
Atorvastatin diol Methyl ester impurity Impurity CS-O-38514 Not Available Enquire
Atorvastatin EP Impurity F Calcium Impurity CS-RS-00073 1105067-87-5 Enquire
Atorvastatin Impurity 1 Impurity CS-O-14671 Not Available Enquire
Atorvastatin Impurity 19 Impurity CS-P-07062 196085-84-4 Enquire
Atorvastatin Impurity 25 Impurity CS-EO-01735 Not Available Enquire
Atorvastatin Lactam Impurity calcium salt Impurity CS-O-39694 1046118-41-5 Enquire
Atorvastatin Lactam Phenanthrene Impurity CS-O-15565 148127-12-2 Enquire
Atorvastatin Pyrrolidone Phenanthrene Calcium Impurity CS-EO-00323 148127-12-2 Enquire
Atorvastatin Pyrrolidone Phenanthrene Sodium Impurity CS-EO-00407 1428125-03-4 Enquire
Difluoro Atorvastatin Acetonide tert-Butyl Ester Impurity CS-T-91951 693793-87-2 Enquire


Intermediate

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
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-Methyl-3-oxo-N-phenyl pentanamide Intermediate CS-O-31956 124401-38-3 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


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


Nitrosamine

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
N-Nitroso Atorvastatin Impurity Nitrosamine CS-EO-02176 Not Available Discontinued


Secondary Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Atorvastatin EP Impurity D Secondary Standards CS-SS-26667 148146-51-4 Enquire
Atorvastatin hemicalcium trihydrate(Secondary Standard) Secondary Standards CS-SS-26677 344423-98-9 Enquire


Analytical Standard

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
4-Hydroxy Atorvastatin D5 Calcium Salt-AR Grade-10 ppm/ACN Analytical Standard CS-O-14019-1ML 265989-45-5 Enquire


Chiral

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(5R)-6-Cyano-5-hydroxy-3-oxo-hexanoic Acid tert-Butyl Ester Chiral CS-O-10935 125988-01-4 In Stock


Therapeutic

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(3R)-4-Cyano-3-hydroxybutyric Acid Ethyl Ester Therapeutic CS-O-31954 141942-85-0 In Stock
(3S,5R)-Atorvastatin Calcium Therapeutic CS-O-20027 887196-25-0 In Stock
Atorvastatin Therapeutic CS-O-07282 134523-00-5 In Stock
Atorvastatin Calcium Therapeutic CS-EB-00200 134523-03-8 Enquire
Atorvastatin Calcium salt Therapeutic CS-IP-00076 134523-03-8 Enquire
Atorvastatin Calcium Salt Therapeutic CS-O-05661 134523-03-8 In Stock
Atorvastatin Calcium Trihydrate Therapeutic CS-O-07283 344423-98-9 In Stock
Atorvastatin EP Impurity A Therapeutic CS-O-07285 433289-83-9 In Stock
Atorvastatin EP Impurity D Therapeutic CS-O-07288 148146-51-4 In Stock
Atorvastatin Epoxy Pyrrolooxazin 6-Hydroxy Analog Therapeutic CS-P-07053 873950-17-5 In Stock
Atorvastatin Epoxy Pyrrolooxazin 7-Hydroxy Analog Sodium Therapeutic CS-O-14629 1315629-79-8 In Stock
Atorvastatin Epoxy Pyrrolooxazin Analog (sodium salt) Therapeutic CS-O-14960 1316291-19-6 In Stock
Atorvastatin Lactone Therapeutic CS-O-07292 125995-03-1 In Stock
Atorvastatin Related compound B Therapeutic CS-SS-26669 887196-25-0 Enquire