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Categories / Impurity

Impurity Products

Browse available compounds, catalogue references, CAS numbers and technical details from Clearsynth.

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Fosaprepitant Dimeglumine Impurity D chemical structure
Custom Synthesis

Fosaprepitant Dimeglumine Impurity D

CAT No. CS-O-32650
CAS No.
Category Impurity
Parent API Fosaprepitant
Formula C23H22F7N4O6P : 2(C7H17NO5)
Mol. Wt. 614.4 : 2(195.2)
Fosaprepitant Dimeglumine Impurity E chemical structure
Custom Synthesis

Fosaprepitant Dimeglumine Impurity E

CAT No. CS-O-32651
CAS No.
Category Impurity
Parent API Fosaprepitant
Formula C23H23F6N4O6P : 2(C7H17NO5)
Mol. Wt. 596.4 : 2(195.2)
Fosaprepitant Dimeglumine Impurity F chemical structure
Custom Synthesis

Fosaprepitant Dimeglumine Impurity F

CAT No. CS-EO-00495
CAS No. 2035475-10-4
Category Impurity
Parent API Fosaprepitant
Formula C30H28F7N4O6P
Mol. Wt. 704.5
Fosaprepitant Dimeglumine Impurity F (Dimeglumine salt) chemical structure
Custom Synthesis

Fosaprepitant Dimeglumine Impurity F (Dimeglumine salt)

CAT No. CS-EO-04064
CAS No. 2035475-11-5
Category Impurity
Parent API -
Formula C37H45F7N5O11P
Mol. Wt. 899.74
Fosaprepitant Dimeglumine Stereochemical Purity Standard chemical structure
Custom Synthesis

Fosaprepitant Dimeglumine Stereochemical Purity Standard

CAT No. CS-O-35350
CAS No. 265121-04-8
Category Impurity
Parent API Aprepitant
Formula C37H56F7N6O16P
Mol. Wt. 1004.83
Fosaprepitant Enantiomer (Dimeglumine) chemical structure
Custom Synthesis

Fosaprepitant Enantiomer (Dimeglumine)

CAT No. CS-O-36243
CAS No. 1523569-87-0
Category Impurity
Parent API Fosaprepitant
Formula C37H56F7N6O16P
Mol. Wt. 1004.83
Fosaprepitant Ester Impurity chemical structure
Custom Synthesis

Fosaprepitant Ester Impurity

CAT No. CS-O-62926
CAS No. 1803189-49-2
Category Impurity
Parent API Fosaprepitant
Formula C24H25F7N4O4
Mol. Wt. 566.48
Fosaprepitant Impurity 1 chemical structure
Custom Synthesis

Fosaprepitant Impurity 1

CAT No. CS-EO-02756
CAS No. 1185503-00-7
Category Impurity
Parent API Fosaprepitant
Formula C23H22F7N4O6P
Mol. Wt. 614.4
Fosaprepitant Impurity 39 chemical structure
Custom Synthesis

Fosaprepitant Impurity 39

CAT No. CS-O-63298
CAS No. -
Category Impurity
Parent API Fosaprepitant
Formula C23H23F6N4O7P
Mol. Wt. 612.42
Fosaprepitant Impurity 4 chemical structure
Custom Synthesis

Fosaprepitant Impurity 4

CAT No. CS-EO-00569
CAS No. -
Category Impurity
Parent API Fosaprepitant
Formula C23H22F7N4O6P : 2(C7H17NO5)
Mol. Wt. 614.4 : 2(195.2)
Fosaprepitant Impurity D chemical structure
Custom Synthesis

Fosaprepitant Impurity D

CAT No. CS-O-43220
CAS No. -
Category Impurity
Parent API Fosaprepitant
Formula C30H39F7N5O11P
Mol. Wt. 809.62
Fosaprepitant Impurity E chemical structure
Custom Synthesis

Fosaprepitant Impurity E

CAT No. CS-O-43221
CAS No. -
Category Impurity
Parent API Fosaprepitant
Formula C30H40F6N5O11P
Mol. Wt. 791.63
Fosaprepitant Morpholin Impurity chemical structure
Custom Synthesis

Fosaprepitant Morpholin Impurity

CAT No. CS-EO-03578
CAS No. 1242175-41-2
Category Impurity
Parent API Fosaprepitant
Formula C20H18F7NO2 : C2H2O4
Mol. Wt. 437.4 : 90.0
Fosaprepitant N-Phosphoryl Impurity chemical structure
Custom Synthesis

Fosaprepitant N-Phosphoryl Impurity

CAT No. CS-O-61647
CAS No.
Category Impurity
Parent API Fosaprepitant
Formula C23H23F7N4O9P2
Mol. Wt. 694.39
Fosaprepitant O-Phosphoryl Impurity chemical structure
Custom Synthesis

Fosaprepitant O-Phosphoryl Impurity

CAT No. CS-O-61648
CAS No.
Category Impurity
Parent API Fosaprepitant
Formula C23H23F7N4O9P2
Mol. Wt. 694.39
Fosaprepitant(1S,2R,3S)isomer chemical structure
Custom Synthesis

Fosaprepitant(1S,2R,3S)isomer

CAT No. CS-O-45670
CAS No. -
Category Impurity
Parent API Fosaprepitant
Formula C23H22F7N4O6P
Mol. Wt. 614.41
Foscarnet sodium EP Impurity B chemical structure
Custom Synthesis

Foscarnet sodium EP Impurity B

CAT No. CS-O-16082
CAS No. 55920-24-6
Category Impurity
Parent API Foscarnet
Formula C3H5O5P : 2(Na)
Mol. Wt. 152.0 : 2(23.0)
Foscarnet Sodium EP Impurity C chemical structure
Custom Synthesis

Foscarnet Sodium EP Impurity C

CAT No. CS-O-16083
CAS No. 72304-94-0
Category Impurity
Parent API Foscarnet
Formula C5H10O5P : Na
Mol. Wt. 181.1 : 23.0
Fosfomycin Diastereomer 1 chemical structure
Custom Synthesis

Fosfomycin Diastereomer 1

CAT No. CS-P-08269
CAS No. 27357-50-2
Category Impurity
Parent API Fosfomycin
Formula C3H7O4P
Mol. Wt. 138.06
Fosfomycin Diastereomer 2 chemical structure
Custom Synthesis

Fosfomycin Diastereomer 2

CAT No. CS-P-08271
CAS No. 45629-00-3
Category Impurity
Parent API Fosfomycin
Formula C3H7O4P
Mol. Wt. 138.1
Fosfomycin enantiomer chemical structure
Custom Synthesis

Fosfomycin enantiomer

CAT No. CS-P-08270
CAS No. 25030-76-6
Category Impurity
Parent API Fosfomycin
Formula C3H7O4P
Mol. Wt. 138.06
Fosfomycin EP Impurity A (2Na salt) chemical structure
Custom Synthesis

Fosfomycin EP Impurity A (2Na salt)

CAT No. CS-EO-03582
CAS No. 84954-80-3 (Freebase)
Category Impurity
Parent API Fosfomycin
Formula C3H7O5P : 2(Na)
Mol. Wt. 154.1 : 2(23.0)
Fosfomycin EP Impurity A (Calcium salt) chemical structure
Custom Synthesis

Fosfomycin EP Impurity A (Calcium salt)

CAT No. CS-EO-03583
CAS No. 84954-80-3 (Freebase)
Category Impurity
Parent API Fosfomycin
Formula C3H7O5P : Ca
Mol. Wt. 154.1 : 40.1
Fosfomycin EP Impurity C (Barium Salt) chemical structure
Custom Synthesis

Fosfomycin EP Impurity C (Barium Salt)

CAT No. CS-O-16549
CAS No. 114252-50-5
Category Impurity
Parent API Fosfomycin
Formula -
Mol. Wt.

Impurity Products at Clearsynth

Browse available Impurity products from Clearsynth. These compounds support analytical research, quality control and pharmaceutical development.

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