Sample

CHEMICAL DETAILS SAMPLE ORIGIN SAMPLE PREP./SIZE PYR0L. CONDITIONS TOTAL ION COUNTS

HYALURONIC ACID, K-salt poly[(l->-4)oGlcAg(l->3)BGlcNAcs]; see insert in spectrum

Boehringer, Mannheim, GFR

suspension in methanol; 10 yg standard

REMARKS - Note the presence of the even-numbered mass peaks at m/z 60, 68, 96, 112, 114 and 126 apparently derived from the GlcA moieties (see Spectrum A.8) and the odd-numbered mass peaks at m/z 59, 73, 83, 97, 109, 125, 137, 139 and 151 derived from the GlcNAc moieties (see Spectrum A.13). The fragment at m/z 59 can be interpreted as acetamide derived from the NAc groups.

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