Description: 556 organic compounds -- part of the class 532-570 series / 556 organic compounds -- part of the class 532-570 series/() organic compounds (class 532, subclass 1) (1) heavy metal containing (e.g., ga, in or t1, etc.) (57) chromium, molybdenum, or tungsten containing (cr, mo, or (61) containing -c(=x)x-, wherein the x's are the same or diverse chalcogens (62) the carbons of plural -c(x=)x- groups, are bonded directly to each other, to the same acyclic carbon, (e.g., chromium oxalates, etc.)
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