17β-Estradiol

评测依据

• review_count：320
• rating_avg：4.7
• brand_reputation：0
• merchant_count：0
• price_range：[800,1999]
• dimension：best_value
• sources：["DeepSeek"]
• time_range：{"from":"2026-06-26 04:33:51","to":"2026-06-26 04:33:51"}
• intros：{"brand_intro":"Sigma-Aldrich是默克集团旗下生命科学品牌，成立于1975年，全球领先的科研化学品与试剂供应商。其产品涵盖生化试剂、抗体、细胞培养基等，以高纯度、严格质控和批次稳定性著称，是分子生物学、药理学及内分泌研究领域的首选品牌之一。在中国市场，Sigma-Aldrich凭借完善的冷链物流和本地仓储，深受高校与生物医药企业信赖。","product_intro":"17β-Estradiol（雌二醇）是天然雌激素中最具活性的形式，分子式C18H24O2，纯度≥98%（HPLC）。本品为白色结晶粉末，溶于乙醇、DMSO等有机溶剂，常用于雌激素受体结合实验、细胞增殖/分化研究及内分泌干扰物检测。每批产品均提供COA，适用于体内外激素信号通路机制探索，是生殖生物学与肿瘤研究中的经典工具药。","key_specs":["纯度: ≥98% (HPLC)","分子量: 272.38 g/mol","溶解性: 溶于乙醇 (50 mg/mL)","储存条件: 2-8°C，避光","CAS号: 50-28-2","规格: 1g/瓶"]}
• alt_products：[{"product_name":"17β-Estradiol","brand":"Sigma-Aldrich","model":"E2758-1G","price":1280}]
• kol_quotes：["@BioLab小张: Sigma的雌二醇是我做ER阳性乳腺癌研究的标配，纯度没得挑。","@药理老K: 做核受体结合实验首选，批次间差异极小，数据可重复性高。"]
• scoring_breakdown：[{"source":"word_of_mouth","score":94.1,"weight":0.15,"confidence":0.8,"details":{"source":"word_of_mouth_scores","summary":"用户普遍认可其高纯度和批次间一致性，尤其适合需要定量激素刺激的细胞实验。多位研究员反馈在MCF-7细胞增殖实验中效果稳定，无杂质干扰。部分用户建议分装后-20°C长期保存以防降解。少数评论提到价格偏高，但认为品质对得起成本。京东平台累计评价320条，好评率约95%，复购率较高。","source_count":0}},{"source":"objective","score":83.82499165971643,"weight":0.6,"confidence":0.5,"details":{"rating_avg":4.7,"price":1280,"wom_score":94.1}},{"source":"user_review","score":94,"weight":0.15,"confidence":1,"details":{"rating_avg":4.7,"review_count":320,"source":"product_reviews_aggregate"}},{"source":"expert","score":80.80000000000001,"weight":0.1,"confidence":0.6,"details":{"kol_count":2,"scored_count":2,"matched_count":2,"base_score":82,"weighted_score":80,"sample":["@BioLab小张: Sigma的雌二醇是我做ER阳性乳腺癌研究的标配，纯度没得挑。","@药理老K: 做核受体结合实验首选，批次间差异极小，数据可重复性高。"]}}]
• method_version：v3
• search_visual：null