WARNING: This product is for research use only, not for human or veterinary use.

MedKoo CAT#: 526790

CAS#: 160369-85-7

Description: X-NeuNAc, also known as CB1339 and X-Neu5Ac, is a novel substrate for chromogenic assay of neuraminidase activity in bacterial expression systems. X-NeuNAc can be used to facilitate the screening of bacterial colonies or plaques for the detection of either natural or mutant neuraminidase activity. Preliminary kinetic studies indicate that this compound is a good substrate (Km 0.89 x 10(-3) M) for neuraminidase and is quite stable under identical conditions in the absence of enzyme. These results suggest that X-Neu5Ac can be useful to screen for bacterially-encoded enzyme production directly on agar plates.

Price and Availability




CB-1339 (X-NeuNAc) is not in stock, but may be available through custom synthesis. For cost-effective reason, minimum 1 gram order is requested. The product will be characterized by NMR, HPLC and MS analysis. Purity (HPLC) is usually >98%. CoA, QC data, MSDS will be provided when product is successfully made. The estimated lead time is 2-3 months. Please send email to sales@medkoo.com to inquire quote.

Chemical Structure


Theoretical Analysis

MedKoo Cat#: 526790
Name: X-NeuNAc
CAS#: 160369-85-7
Chemical Formula: C19H21BrClN2NaO9
Exact Mass:
Molecular Weight: 559.7258
Elemental Analysis: C, 40.77; H, 3.78; Br, 14.28; Cl, 6.33; N, 5.00; Na, 4.11; O, 25.73

Synonym: X-Neu5Ac; CB-1339; 160369-85-7; X-NeuNAc.

IUPAC/Chemical Name: sodium;(2S,4S,5R,6R)-5-acetamido-2-[(5-bromo-4-chloro-1H-indol-3-yl)oxy]-4-hydroxy-6-[(1R,2R)-1,2,3-trihydroxypropyl]oxane-2-carboxylate


InChi Code: InChI=1S/C19H22BrClN2O9.Na/c1-7(25)23-15-10(26)4-19(18(29)30,32-17(15)16(28)11(27)6-24)31-12-5-22-9-3-2-8(20)14(21)13(9)12;/h2-3,5,10-11,15-17,22,24,26-28H,4,6H2,1H3,(H,23,25)(H,29,30);/q;+1/p-1/t10-,11+,15+,16+,17+,19+;/m0./s1

SMILES Code: O=C([C@]1(OC2=CNC3=C2C(Cl)=C(Br)C=C3)O[C@@H]([C@H](O)[C@H](O)CO)[C@H](NC(C)=O)[C@@H](O)C1)[O-].[Na+]

Technical Data

White to off-white solid powder.

>98% (or refer to the Certificate of Analysis)

Shipping Condition:
Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.

Storage Condition:
Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).

Soluble in DMSO

Shelf Life:
>2 years if stored properly

Drug Formulation:
This drug may be formulated in DMSO

Stock Solution Storage:
0 - 4 C for short term (days to weeks), or -20 C for long term (months).

Harmonized System Code:


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8: Suzuki Y, Toda Y, Tamatani T, Watanabe T, Suzuki T, Nakao T, Murase K, Kiso M, Hasegawa A, Tadano-Aritomi K, et al. Sulfated glycolipids are ligands for a lymphocyte homing receptor, L-selectin (LECAM-1), Binding epitope in sulfated sugar chain. Biochem Biophys Res Commun. 1993 Jan 29;190(2):426-34. PubMed PMID: 7678958.

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