Sample

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

ADENOSINE-5'-PHOSPHATE (5'-AMP), free acid see insert in spectrum; C]0H14N5°7P' = 347

Serva, Heidelberg, GFR

suspension in methanol; 10 yg standard

4 X 104

remarks - As in the spectrum of RNA (Spectrum C.l), ribose moiety fragments are almost exclusively present in this spectrum. The peak at m/z 114 can be rationalized as representing the loss of water from the ribose moiety. Compare also with the spectrum of the Na-salt of 5'-AMP (Spectrum C.4).

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