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，其特性规定极严密。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》(Food Chemicals Codex)中规定的标准物质以及纯品（优质化学样品）。
Cat. No. Description CAS No.
"1,082,504 " Butorphanol Tartrate CIV (500 mg) [58786-99-5]
"1,082,606 " Butyl Acetate (1.2 mL/ampule; 3 ampules) [123-86-4]
"1,082,708 " Butylated Hydroxytoluene (500 mg) (AS) [128-37-0]
"1,082,800 " "Monotertiary-butyl-p-benzoquinone (100 mg)
(FCC)" [3602-55-9]
"1,082,901 " Butyl 3-(butylamino)-4-phenoxy-5-sulfamoyl- benzoate (25 mg) n/f
"1,083,008 " 2-tert-Butyl-4-hydroxyanisole (200 mg) [88-32-4]
"1,083,100 " 3-tert-Butyl-4-hydroxyanisole (200 mg) [121-00-6]
"1,083,303 " tert-Butylmethyl ether [1634-04-4]
"1,084,000 " Butylparaben (200 mg) [94-26-8]
"1,085,003 " Caffeine (200 mg) [58-08-2]
"1,086,006 " Caffeine Melting Point Standard (1 g) [58-08-2]
"1,086,108 " Calcifediol (75 mg) [63283-36-3]
"1,086,301 " Calcitriol (10 mg) [32222-06-3]
"1,086,312 " Calcitriol Solution (5 mL) n/f
"1,086,334 " Calcium Acetate (1 g) (AS) [62-54-4]
"1,086,356 " Calcium Ascorbate (200 mg) [5743-28-2]
"1,086,403 " Calcium Carbonate (1 g) (AS) [471-34-1]
"1,086,436 " Calcium Chloride (1 g) (AS) [10035-04-8]
"1,086,800 " Calcium Gluceptate (200 mg) [29039-00-7]
"1,086,855 " Calcium Hydroxide (1 g) (AS) [1305-62-0]
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