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

Fosaprepitant Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Fosaprepitant-13C,15N3 Dimeglumine Stable Isotopes CS-T-97493 Not Available Enquire
Fosaprepitant-d4 Dimeglumine Stable Isotopes CS-O-06636 265121-04-8(Unlabeled) In Stock
Fosaprepitant 13C6 Stable Isotopes CS-EK-01741 172673-20-0 unlabeled Enquire
Fosaprepitant D4 Stable Isotopes CS-O-03674 172673-20-0 (Unlabeled) Enquire
Fosaprepitant dimeglumine 13C6 Stable Isotopes CS-EK-01820 265121-04-8 unlabeled Enquire


API

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Fosaprepitant Dimeglumine API CS-O-30923 265121-04-8 In Stock
Fosaprepitant Potassium salt API CS-EO-03579 172822-03-6 Enquire
Fosaprepitant API CS-T-24784 172673-20-0 Enquire


Impurity

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Fosaprepitant (R,R,R)-Isomer Impurity Impurity CS-O-36242 1523569-90-5 Enquire
Fosaprepitant Benzyl Ester Impurity CS-P-08003 889852-02-2 Enquire
Fosaprepitant Dibenzyl Ester Impurity CS-T-76464 265121-01-5 Enquire
Fosaprepitant Dimeglumine Impurity F (Dimeglumine salt) Impurity CS-EO-04064 2035475-11-5 Enquire
Fosaprepitant Dimeglumine Stereochemical Purity Standard Impurity CS-O-35350 265121-04-8 Enquire
Fosaprepitant Impurity 1 Impurity CS-EO-02756 1185503-00-7 Enquire
Fosaprepitant Morpholin Impurity Impurity CS-EO-03578 1242175-41-2 Enquire
Fosaprepitant N-oxide Impurity CS-T-93417 ---- Enquire
Fosaprepitant(1S,2R,3S)isomer Impurity CS-O-45670 Not Available Enquire
(1S,2R,3S)-Aprepitant Impurity CS-P-07152 170902-81-5 Enquire
(3-(((2R,3S)-2-((R)-1-(3,5-bis(trifluoromethyl)phenyl)ethoxy... Impurity CS-O-40784 2578084-26-9 Enquire
(3-(((2S,3S)-2-((S)-1-(3,5-bis(trifluoromethyl)phenyl)ethoxy... Impurity CS-O-35964 Not Available Enquire
Desfluoro Fosaprepitant Impurity CS-O-14055 Not Available Enquire
Fosaprepitant Dimeglumine Desfluoro impurity Impurity CS-O-36244 Not Available Enquire
Fosaprepitant dimeglumine Diastereomer Impurity Impurity CS-O-34114 Not Available Enquire
Fosaprepitant Dimeglumine Impurity D Impurity CS-O-32650 Not Available Enquire
Fosaprepitant Dimeglumine Impurity E Impurity CS-O-32651 Not Available Enquire
Fosaprepitant Dimeglumine Impurity F Impurity CS-EO-00495 2035475-10-4 Enquire
Fosaprepitant Dimeglumine isomer(2S,3R) Impurity CS-O-36243 1523569-87-0 Enquire
Fosaprepitant Enantiomer Impurity CS-EO-00570 1523569-86-9 Enquire
Fosaprepitant Impurity 2 Impurity CS-EO-00553 Not Available Enquire
Fosaprepitant Impurity 4 Impurity CS-EO-00569 Not Available Enquire
Fosaprepitant Impurity 6 Impurity CS-EO-00571 172822-01-4 Enquire
Fosaprepitant Impurity D Impurity CS-O-43220 Not Available Enquire
Fosaprepitant Impurity E Impurity CS-O-43221 Not Available Enquire
Fosaprepitant Impurity F Impurity CS-O-35351 Not Available Enquire


Intermediate

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Tetrabenzyl pyrophosphate Intermediate CS-T-61737 990-91-0 In Stock


Fine Chemicals

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Phosphoric Acid Dibenzyl Ester Fine Chemicals CS-T-39839 1623-08-1 In Stock


Nitrosamine

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
N-Nitroso Fosaprepitant Nitrosamine CS-O-51676 Not Available Enquire