This approach would not address commercial mixtures which contained only one of BDE-99 or BDE-47; A second approach would be to name a specific substance in the mixture and/or all its isomers with the same degree of substitution.
(c) 第二种办法是命名所涉混合物中的某种特定物质和（或) 替代程度相同的所有其异构体。