结论：该结晶鉴定为异海松酸；
Conclusion:Its structure was identified as isopimaric acid .
上海松承环保科技有限公司的诚信、实力和产品质量获得业界的认可。
Shanghai song Cheng Environmental Technology co., Ltd. integrity, strength and product quality recognition of the industry.
上海松承环保科技有限公司的诚信、实力和产品质量获得业界的认可。
Shanghai song Cheng Environmental Technology co., Ltd. integrity, strength and product quality recognition of the industry.
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