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发布人:长沙上禾生物科技有限公司
发布日期:2026/7/20 19:43:54
公司官网 http://www.staherb.com/ 资质:HALAL, KOSHER等认证
☎:19573130018 杨经理(微信同号)
产品身份与理化基础:
中文名称:大黄素甲醚(亦称:朱砂莲乙素、非斯酮)
英文名称:Emodin-3-methyl ether / Physcion
CAS 号:521-61-9
分子式 / 分子量:C₁₆H₁₂O₅ / 284.27
化学归属:天然蒽醌衍生物(1,8-二羟基-3-甲氧基-6-甲基蒽醌),是大黄素(Emodin)3位羟基甲基化产物。
性状:金黄色至橙黄色结晶性粉末(针状结晶),熔点约 203~207℃;几乎不溶于水,微溶于冷乙醇,易溶于沸乙醇、丙酮、氯仿、乙酸及碱水溶液。
专业生产工艺路线(Staherb Technical Process):
上禾生物针对 Emodin-3-methyl ether 的生产采用“植物提取—富集—色谱分离—重结晶纯化”的精细化路线,隶属于公司植物有效成分单体分离纯化车间体系:
原料甄选与前处理:选用蓼科大黄(Rheum palmatumL.)、虎杖(Polygonum cuspidatum)或豆科决明子**等富含蒽醌类的干燥根茎,经产地溯源、干燥度与重金属/农残检测后,低温粉碎过筛。
溶剂提取与浓缩:采用乙醇/甲醇-水体系回流或超声辅助提取,靶向富集总蒽醌;提取液经减压浓缩(≤60℃,防热敏降解)得浸膏;可选超临界CO₂辅助脱脂除杂。
富集与除杂:浸膏经大孔吸附树脂(AB-8/D101等) 梯度洗脱,去除糖、鞣质、色素等水溶性杂质,富集甲基化蒽醌组分(Emodin / Physcion)。
色谱分离纯化(核心):采用硅胶柱层析、制备型HPLC或高速逆流色谱(HSCCC) 进行高分辨分离,以氯仿-甲醇、石油醚-乙酸乙酯等系统洗脱,精准切分 Emodin-3-methyl ether 流份,区别于大黄素、芦荟大黄素等异构体。
重结晶与精制:纯化流份经乙醇-水或丙酮-石油醚体系反复重结晶,得 ≥98% HPLC 高纯金黄色结晶;必要时进行活性炭脱色。
干燥与包装:真空干燥或冷冻干燥(≤40℃) 防止氧化变色;成品在充氮、避光、2~8℃(长期-20℃) 条件下双层铝箔密封包装,提供 mg~kg 级定制(20mg~1kg+)。
质控与合规:
检测方法:HPLC(C18,甲醇-水/乙腈-水体系,254nm 或 210~220nm)、MS、NMR 结构确证。
标准体系:参照 ChP/EP/USP 单体要求,检测纯度(≥98%~99%)、单杂、溶剂残留(EtOH/MeOH/丙酮)、重金属(Pb/As/Cd/Hg)、微生物。
用途限制:专供医药研发、分析对照品、植物源农药(白粉病等杀菌活性研究)、科研实验;严禁直接用于人体临床治疗或食品添加。

Product Identity & Physicochemical Basis:
Product Name: Emodin-3-methyl ether (Syn. Physcion, Zhu Sha Lian Yi Su, 1,8-Dihydroxy-3-methoxy-6-methylanthraquinone)
CAS No.: 521-61-9
Molecular Formula / Weight: C₁₆H₁₂O₅ / 284.27
Chemical Class: Natural anthraquinone derivative (methylated analog of Emodin at 3-OH position).
Properties: Yellow-golden to orange crystalline powder (needle crystals), mp ~203~207℃; practically insoluble in water, slightly soluble in cold EtOH, freely soluble in boiling EtOH, acetone, CHCl₃, AcOH, and alkaline solutions.
Professional Production Process (Staherb Technical Route):
Staherb produces Emodin-3-methyl ether in its Plant Active Monomer Isolation & Purification Workshop via a refined “Extraction → Enrichment → Chromatographic Separation → Recrystallization” pipeline:
Raw Material & Pretreatment: Select Rhubarb (Rheum palmatumL.) roots, Knotweed (Polygonum cuspidatum), or Cassia seeds**; traceable sourcing with moisture/heavy metal/pesticide control; low-temp milling & sieving.
Solvent Extraction & Concentration: Ethanol/MeOH-water reflux or ultrasound-assisted extraction to enrich total anthraquinones; vacuum concentration (≤60℃ to prevent thermal degradation) to soft extract; optional SC-CO₂ defatting.
Enrichment & Depuration: Extract processed through macroporous adsorption resins (AB-8/D101) with gradient elution to remove sugars, tannins, polar pigments, enriching methylated anthraquinone fractions (Emodin/Physcion).
Chromatographic Purification (Core): Silica gel CC, Prep-HPLC, or HSCCC separation using CHCl₃-MeOH / PE-EA systems to precisely isolate Emodin-3-methyl ether from co-existing Emodin, Aloe-emodin, etc.
Recrystallization & Refinement: Purified fractions subjected to repeated recrystallization (EtOH-H₂O / Acetone-PE) to yield ≥98% HPLC golden-yellow crystals; activated carbon decolorization if needed.
Drying & Packaging: Vacuum or freeze-drying (≤40℃) to prevent oxidation; final product stored N₂-flushed, light-protected, 2~8℃ (long-term -20℃) in sealed dual-layer foil; customizable from mg to kg scale (20mg~1kg+).
Quality Control & Compliance:
Assay: HPLC (C18, MeOH-H₂O / ACN-H₂O, 254nm or 210~220nm), MS, NMR confirmation.
Standards: Reference to ChP/EP/USP monomer criteria: Purity (≥98%~99%), related substances, residual solvents (EtOH/MeOH/Acetone), heavy metals (Pb/As/Cd/Hg), microbes.
Intended Use: Exclusively for pharmaceutical R&D, analytical reference standards, botanical fungicide (e.g., powdery mildew) research, scientific experimentation; strictly NOT for direct human therapeutic use or food additives.
⚠️ 工艺与安全要点(Processing & Safety Notes)
光/热/碱敏感性:蒽醌类(尤其羟基/甲氧基取代)在强光、高温(>60℃长时)、强碱下易氧化变色或开环降解,全程需避光、N₂保护、控温≤60℃(提取)、干燥≤40℃;
异构体分离难度:Emodin-3-methyl ether 与 Emodin、Chrysophanol 等极性接近,依赖制备液相或HSCCC高精度切分,确保≥98%纯度;
安全管控:具一定细胞毒性与研究级刺激(R36/37/38),操作需手套/护目镜,避免吸入粉尘与眼接触;废液按有机危废处理。
至此,长沙上禾生物Emodin-3-methyl ether(Physcion / 大黄素甲醚)的专业生产维度(理化、工艺、纯化、质控)已覆盖。
公司官网 http://www.staherb.com/ 资质:HALAL, KOSHER等认证
☎:19573130018 杨经理(微信同号)
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