Kedu ihe bụ CAS? CAS na-anọchi anya Ọrụ Abstracts Chemical, nchekwa data nwere ikike nke American Chemical Society (ACS) hibere. Nọmba CAS, ma ọ bụ nọmba ndekọ CAS, bụ njirimara ọnụọgụ pụrụ iche nke ejiri iji kpado kemịkalụ, ogige, usoro ndu, polymers, na ndị ọzọ. . Na chem...
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