 | L-METHIONINE-1-13C, 99 ATOM % 13CCAS：81202-04-2 |
|
 | L-METHIONINE-METHYL-13C, 99 ATOM % 13CCAS：49705-26-2 |
|
 | MALONIC-2-13C ACID, 99 ATOM % 13CCAS：55514-11-9 |
|
 | MALONIC-1,3-13C2 ACID, 99 ATOM % 13CCAS：99524-14-8 |
|
 | MALEIC-2,3-13C2 ANHYDRIDE, 99 ATOM % 13CCAS：41403-35-4 |
|
 | D-MANNOSE-1-13C, 99 ATOM % 13CCAS：70849-31-9 |
|
 | D-MANNITOL-1-13C, 99+ ATOM % 13CCAS：132202-29-0 |
|
 | 4,4'-METHYLENE-13C-DIANILINE, 99 ATOM % 13CCAS：190778-00-8 |
|
 | METHYL FORMATE-13C, 99 ATOM % 13CCAS：92276-15-8 |
|
 | METHYLAMINE-13C HYDROCHLORIDE, 99 ATOM % 13CCAS：60656-93-1 |
|
 | METHYL-13C PHENYL SULFONE, 99 ATOM % 13CCAS：125562-53-0 |
|
 | 4-METHYL-2-OXOPENTANOIC-1-13C ACID, SODI UM SALT, 99 ATOM % 13CCAS：93523-70-7 |
|
 | (METHYL-13C)TRIPHENYLPHOSPHONIUM IODIDE, 99 ATOM % 13CCAS：81826-67-7 |
|
 | METHANE-13C, 99 ATOM % 13CCAS：6532-48-5 |
|
 | 硝基甲烷C13CAS：32480-00-5 |
|
