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Table 2 Reference molecular formulas and molecular weights for each menaquinone (MK) ion fragment

From: A rapid and efficient method for the extraction and identification of menaquinones from Actinomycetes in wet biomass

MK Molecular formula [M]+ [M + H]+ [M + Na]+ [M + K]+
MK-1 C16H16O2 240.115 241.1229 263.1048 279.0787
MK-2 C21H24O2 308.1776 309.1855 331.1674 347.1413
MK-3 C26H32O2 376.2402 377.2481 399.2300 415.2039
MK-4 C31H40O2 444.3028 445.3107 467.2926 483.2665
MK-5 C36H48O2 512.3654 513.3733 535.3552 551.3291
MK-6 C41H56O2 580.4280 581.4359 603.4178 619.3917
MK-7 C46H64O2 648.4906 649.4985 671.4804 687.4543
MK-8 C51H72O2 716.5532 717.5611 739.5430 755.5169
MK-9 C56H80O2 784.6158 785.6237 807.6056 823.5795
MK-10 C61H88O2 852.6784 853.6863 875.6682 891.6421
MK-11 C66H96O2 920.7410 921.7489 943.7308 959.7047
MK-12 C71H104O2 988.8036 989.8115 1011.7934 1027.7673
MK-13 C76H112O2 1056.8662 1057.8741 1079.856 1095.8299
MK-14 C81H120O2 1124.9288 1125.9367 1147.9186 1163.8925
MK-15 C86H128O2 1192.9914 1193.9993 1215.9812 1231.9551