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(2-{Ethyl-[4-(4-nitro-phenylazo)-phenyl]-amino}-ethoxy)-acetic acid-4-nitro-phenyl ester


Product No. Pack Size Available ADS InfoAnalytical Data Sheet List Price Online Order Price Qty
4033116.0050 50 mg Ships within 3-5 business days  
CHF 210.00
CHF 195.30 (7%)


Incomplete coupling reactions during SPPS can be conveniently detected by treating a sample of the resin with NF31 (the p-nitrophenyl ester of the azo dye (2-{Ethyl-[4-(4-nitrophenylazo)phenyl]amino}ethoxy)acetic acid). The NF31 assay is especially suitable for the detection of sterically hindered primary amines.
Catalog Number Q-2610
Synonyms NF31
Molecular Formula C₂₄H₂₃N₅O₇
Relative Molecular Mass 493.48
CAS Registry Number 253426-51-6
Storage Conditions +5 ± 3 °C
Keywords Labeling reagent

Product citations

A.Madder et al., Eur. J. Org. Chem., 2787 (1999)