Sample

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

REMARKS - The amide substitueras of the heterocyclic ring system may give rise to the formation of acetamide (m/z 59). The peak at m/z 67 probably represents pyrrole whereas the peak at m/z 98 may be derived from the ribofuranoside moiety. Note the high NH34" peak at m/z 17.

CYANOCOBALAMIN (vitamin B^)

C63H88CoN14°14P; MW = 1355 Merck AG, Darmstadt, GFR

suspension in methanol; 20 yg standard

5 X 104

m/2

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