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

Formoterol Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Formoterol D6 Stable Isotopes CS-O-47959 73573-87-2 (Unlabelled) Enquire
Formoterol hemifumarate-d6 Stable Isotopes CS-T-95397 43229-80-7 (Unlabeled) In Stock
Formoterol-13C-d3 Hemifumarate Stable Isotopes CS-EO-02530 Not Available Enquire
Formoterol-D7 Stable Isotopes CS-EO-02531 Not Available Enquire
N-Deformyl Formoterol-d6 Fumarate (Mixture of Diastereomers... Stable Isotopes CS-T-97653 1795142-59-4 Enquire
N-Methyl Formoterol-d3 Fumarate (Mixture of Diastereomers) Stable Isotopes CS-T-97311 1795143-40-6 Enquire
rac Formoterol Hemifumarate-d6 Stable Isotopes CS-O-02939 ---- Enquire
rac-Formoterol-d6 Stable Isotopes CS-ZG-03046 1020719-45-2 In Stock
Arformoterol 13CD3 Stable Isotopes CS-O-15663 67346-49-0 (Unlabeled) Enquire
Arformoterol D3 Stable Isotopes CS-O-15661 1198353-13-7 Enquire
Arformoterol tartrate D6 Stable Isotopes CS-O-15662 200815-49-2 (Unlabeled) Enquire
Formoterol d6 Tartarate Stable Isotopes CS-O-16446 67346-55-8 (Unlabeled) Enquire


API

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Arformoterol API CS-O-00859 67346-49-0 In Stock
Arformoterol Tartrate API CS-O-00839 200815-49-2 In Stock
Formoterol fumarate dihydrate API CS-O-01547 183814-30-4 In Stock
Formoterol API CS-T-24640 128954-45-0 Enquire
Formoterol Fumarate API CS-O-01545 43229-80-7 Enquire


Impurity

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(S,S)-Formoterol Impurity CS-P-07955 67346-48-9 Enquire
1-(4-(Benzyloxy)-3-nitrophenyl)-2-bromoethanone Impurity CS-T-06123 43229-01-2 In Stock
3-Methyl Arformoterol Impurity CS-O-56442 ---- Enquire
A-Hydroxy Diol Impurity Impurity CS-O-36277 876753-51-4 Enquire
Arformoterol Impurity 5 Impurity CS-O-59230 .... Enquire
ARFORMOTEROL ISOPROPYL ETHER IMPURITY Impurity CS-O-44980 Not Available Enquire
Arformoterol Meta isomer Impurity CS-O-44700 1027563-89-8 Enquire
Arformoterol N-Benzyl 2-benzyloxy Impurity Impurity CS-O-49675 188690-83-7 Enquire
Arformoterol Related compound-G Impurity CS-O-44369 Not Available Enquire
Arformoterol Tartrate S isomer Impurity CS-O-44540 67346-54-7 Enquire
ARFORMOTEROL TARTRATE RELATED COMP A Impurity CS-O-44368 Not Available Enquire
Arformoterol Unknown Impurity at 0.97RRT Impurity Impurity CS-O-42955 Not Available Enquire
Deformyl Formoterol Citric acid adduct Impurity CS-O-43273 Not Available Enquire
Formoterol EP impurity A (Mixture of Diastereomers) Impurity CS-O-49473 652994-19-9 Enquire
Formoterol EP Impurity A Fumarate Impurity CS-EO-03577 150513-24-9 (Freebase) Enquire
Formoterol EP Impurity C Impurity CS-P-07944 1795135-61-3 Enquire
Formoterol EP Impurity H Impurity CS-O-40908 2514947-17-0 Enquire
Formoterol Fumarate benzoxazol impurity Impurity CS-O-46225 Not Available Enquire
Formoterol Fumarate EP Impurity A Impurity CS-O-14073 150513-24-9 In Stock
Formoterol Fumarate EP Impurity B Impurity CS-O-14074 1224588-66-2 In Stock
Formoterol Fumarate EP Impurity C Impurity CS-O-14075 Not Available Enquire
Formoterol Fumarate EP Impurity D Impurity CS-O-14076 1795133-96-8 In Stock
Formoterol Fumarate EP Impurity E Impurity CS-O-14077 1616967-26-0 Enquire
Formoterol Fumarate EP Impurity F Impurity CS-O-14078 1795129-59-7 Enquire
Formoterol Fumarate(Mixture of Diastereomers) Impurity CS-TB-59588 169375-55-7 Enquire
Formoterol Imine Impurity Impurity CS-O-39310 Not Available Enquire
Formoterol Impurity 2 Impurity CS-EO-03576 43229-69-2 Enquire
Formoterol impurity 3 Impurity CS-O-56708 ---- Enquire
Formoterol Impurity G Impurity CS-O-31109 Not Available In Stock
Formoterol Impurity G Hydrochloride Impurity CS-P-07951 3706-26-1 In Stock
N-(2-(benzyloxy)-5-ethylphenyl)formamide Impurity CS-O-36280 ---- Enquire
N-Benzyl Formoterol Impurity CS-T-95960 1337876-26-2 Enquire
rac-O-Benzyl N-Phenyl Formoterol(Mixture of Diastereomers) Impurity CS-T-06112 43229-70-5 In Stock
(S,S)-Formoterol D-Tartrate Impurity CS-T-74672 208102-43-6 Enquire
(αR)-3-Amino-4-hydroxy-α-[[[(1R)-2-(4-methoxyphenyl)-1-methy... Impurity CS-TA-06212 245759-62-0 Enquire
Arformoterol Impurity 1 Impurity CS-EO-00609 Not Available Enquire
bis(1-(4-methoxyphenyl)propan-2-yl)amine Impurity CS-O-36283 112376-21-3 Enquire
bis(1-phenylethyl)amine Impurity CS-O-36284 10024-74-5 Enquire
C-Demethyl N-Benzyl Formoterol O-Benzyl Ether Impurity CS-T-93992 Not Available Enquire
Formoterol Ethyl Ether Impurity Impurity CS-EO-01922 Not Available Enquire
Formoterol Fumarate Dihydrate EP Impurity I (R,S-isomer) ((R... Impurity CS-P-07947 67346-51-4 Enquire
Formoterol Fumarate Dihydrate EP Impurity I (S,R-isomer) ((S... Impurity CS-P-07950 67346-50-3 Enquire
Formoterol Fumarate dihydrate Impurity Impurity CS-O-34145 477552-93-5 Enquire
Formoterol Fumarate EP Impurity H Impurity CS-O-14080 Not Available Enquire
Formoterol Fumarate EP Impurity I Impurity CS-T-55025 532414-36-1 Enquire
Formoterol Impurity 1 Impurity CS-EO-00524 49861-92-9 Enquire
Formoterol Impurity 13 Impurity CS-EO-01778 Not Available Enquire
Formoterol impurity B fumarate salt Impurity CS-DX-00011 1795137-04-0 Enquire
Formoterol impurity C fumarate salt Impurity CS-DX-00012 1795135-62-4 Enquire
Formoterol Impurity D Impurity CS-P-07945 1795133-96-8 Enquire
Formoterol impurity D fumarate salt Impurity CS-DX-00013 1795133-96-8 (Freebase) Enquire
Formoterol impurity E fumarate salt Impurity CS-DX-00014 1795136-92-3 Enquire
Formoterol impurity F fumarate salt Impurity CS-DX-00015 1795129-60-0 Enquire
Formoterol Related Compound C Impurity CS-O-35768 1795135-61-3 (free base) Enquire
Formoterol related compound I Impurity CS-EO-00568 Not Available Enquire
N-(2-p-Methoxyphenyl-1-methyl)ethylformamide Impurity CS-P-07949 126002-14-0 Enquire
N-(5-Formyl-2-hydroxyphenyl)formamide Impurity CS-T-76868 903563-43-9 Enquire


EP Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
FORMOTEROL FUMARATE FOR SYSTEM SUITABILITY EP Standards CS-EG-03253 Not Available Enquire


Intermediate

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
1-(4-Methoxyphenyl)-2-Benzyl Amino Propane Hcl Intermediate CS-T-57622 43229-65-8 In Stock


Glucuronide

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Benzyl Glucuronide of Formoterol Glucuronide CS-EO-01893 Not Available Enquire
Formoterol-β-D-Glucuronide Glucuronide CS-T-54911 615551-59-2 Enquire
rac Formoterol 1'-O-β-D-Glucuronide Glucuronide CS-T-54912 250336-07-3 Enquire


Fine Chemicals

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
(S)-Diphenyl(pyrrolidin-2-yl)methanol Fine Chemicals CS-O-15225 112068-01-6 In Stock