USP标准物质在全球130多个国家得到广泛的认可和信任。USP法定标准物质是原料药、辅料、杂质、降解产品、食品补充剂、药典试剂和性能校正剂的样本，在进行法定 USP-NF 测试和化验时必须使用USP 标准物质。

USP标准物质也可以用作校正剂，用于溶出、粒子计数、熔点和滴定液标定，也可以用于空白和对照实验。标准物质主要用于色谱和光谱方法。除基于USP-NF的标准物质之外，USP 还向分析、临床、制药和研究实验室提供《食品化学法典》中规定的标准物质以及纯品。

1,255,001 " Estrone (200  mg)   [53-16-7]

"1,255,500 "    Estropipate (500  mg)   [7280-37-7]

"1,256,004 "    Ethacrynic Acid (200  mg)   [58-54-8]

"1,257,007 "    Ethambutol Hydrochloride (200  mg)  [1070-11-7]

"1,258,305 "    Ethchlorvynol CIV (0.7 ml)  [113-18-8]

"1,260,001 "    Ethinyl Estradiol (150  mg) [57-63-6]

"1,260,012 "    "Ethinyl Estradiol Related Compound A (20  mg)  n/f

"1,261,004 "    Ethionamide (200  mg)   [536-33-4]

"1,262,801 "    Ethopabate (125  mg)    [59-06-3]

"1,262,823 "    "Ethopabate  Related  Compound  A  (25  mg)

"1,264,002 "    Ethosuximide (500  mg)  [77-67-8]

"1,264,501 "    Ethotoin (200  mg)  [86-35-1]

"1,265,005 "    Ethoxzolamide (200  mg) [452-35-7]

"1,265,402 "    Ethyl Acetate (1.2  mL/ampule; 3  ampules)  [141-78-6]

"1,265,424 "    Ethyl Acrylate and Methyl Methacrylate Copoly- mer Dispersion (1.5g)

"1,265,457 "    Ethylbenzene (0.5  mL/ampule; 3  ampules)   [100-41-4]

"1,265,504 "    Ethylcellulose (1 g)    [9004-57-3]

"1,265,606 "    Ethyl Formate (1.2  mL/ampule; 3  ampules)  [109-94-4]

"1,266,008 "    Ethyl Maltol (1 g) (FCC)    [4940-11-8]

"1,266,507 "    Ethylnorepinephrine Hydrochloride (200  mg) [3198-07-0]

"1,267,000 "    Ethylparaben (200  mg)  [120-47-8]

"1,267,500 "    Ethyl Vanillin (200  mg)    [121-32-4]

"1,268,003 "    Ethynodiol Diacetate (200  mg)  [297-76-7]

"1,268,502 "    Etidronate Disodium (200  mg)   [7414-83-7]

"1,268,513 "    "Etidronate  Disodium  Related  Compound  A(300mg)[13517-23-2]

"1,268,604 "    Etidronic Acid Monohydrate (1  g)   [2809-21-4]

"1,268,706 "    Etodolac (400  mg)  [41340-25-4]

"1,268,728 "    "Etodolac Related Compound A (25  mg)  [109518-50-5]

"1,268,808 "    Etoposide (300  mg) [33419-42-0]

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