| 3 | 1/1 | 返回列表 |
| 查看: 435 | 回復(fù): 2 | ||
昨夜風(fēng)lucky銀蟲 (正式寫手)
|
[求助]
頭孢拉定質(zhì)量標(biāo)準(zhǔn)
|
| USP37版現(xiàn)在哪兒能查到? |

鐵桿木蟲 (著名寫手)
|
DEFINITION Cefadroxil has a potency equivalent to NLT 950 µg/mg and NMT 1050 µg/mg of cefadroxil (C16H17N3O5S), calculated on the anhydrous basis. IDENTIFICATION • A. Infrared Absorption 197K Change to read: • B. The retention time of the major peak of the Sample solution corresponds to that of the Standard solution , as obtained in the Assay SPECIFIC TESTS • Optical Rotation, Specific Rotation781S Sample solution: 10 mg/mL in water Acceptance criteria: +165.0 to +178.0 • Crystallinity 695: Meets the requirements • pH 791 Sample solution: 50 mg/mL suspension in water Acceptance criteria: 4.0–6.0 • Water Determination, Method I 921: 4.2%–6.0%, except where it is labeled as being in the hemihydrate form it is between 2.4% and 4.5% ADDITIONAL REQUIREMENTS • Packaging and Storage: Preserve in tight containers. • Labeling: The hemihydrate form is so labeled. Table 2 Name Relative Retention Time Acceptance Criteria, NMT (%) Amoxicillin related compound Ia 0.16 0.5 Cefadroxil R -sulfoxideb 0.22 0.15 Cefadroxil S -sulfoxidec 0.41 0.15 Cefadroxil related compound Bd 0.49 0.5 Dimethylformamidee 0.55 — Cefadroxil related compound Df 0.71 0.5 Cefadroxil related compound Ig 0.80 0.15 Diketopiperazine derivativeh 0.87 0.5 Cefadroxil 1.0 — N -Phenylglycyl delta-3 cefadroxili 1.4 0.15 Cefadroxil ethyl homologj 1.5 0.15 N -Phenylglycyl cefadroxilk 1.8 0.5 3-Hydroxy-4-methylthiophenonel 2.0 0.5 N -Ethoxycarbonyl 7-aminodesacetoxycephalosporanic acidm 2.1 0.15 O -Ethoxycarbonyl cefadroxiln 2.3 0.3 Cefadroxil dimero 2.4 0.15 Any individual unspecified impurity — 0.10 Total impurities — 2.0 |

銀蟲 (正式寫手)

| 3 | 1/1 | 返回列表 |
| 最具人氣熱帖推薦 [查看全部] | 作者 | 回/看 | 最后發(fā)表 | |
|---|---|---|---|---|
|
[考研] 求調(diào)劑一志愿海大,0703化學(xué)學(xué)碩304分,有大創(chuàng)項(xiàng)目,四級已過 +6 | 幸運(yùn)哩哩 2026-03-22 | 10/500 |
|
|---|---|---|---|---|
|
[考研] 一志愿武理材料工程348求調(diào)劑 +5 |  ̄^ ̄゜汗 2026-03-19 | 7/350 |
|
|
[考研] 289求調(diào)劑 +7 | 懷瑾握瑜l 2026-03-20 | 7/350 |
|
|
[考研] 資源與環(huán)境 調(diào)劑申請(333分) +5 | holy J 2026-03-21 | 5/250 |
|
|
[考研]
|
Grand777 2026-03-21 | 3/150 |
|
|
[考研] 材料與化工(0856)304求B區(qū)調(diào)劑 +3 | 邱gl 2026-03-20 | 7/350 |
|
|
[考研] 0703化學(xué)297求調(diào)劑 +3 | Daisy☆ 2026-03-20 | 3/150 |
|
|
[考研] 313求調(diào)劑 +4 | 肆叁貳壹22 2026-03-19 | 4/200 |
|
|
[考研] 299求調(diào)劑 +5 | shxchem 2026-03-20 | 7/350 |
|
|
[考研] 南昌大學(xué)材料專碩311分求調(diào)劑 +6 | 77chaselx 2026-03-20 | 6/300 |
|
|
[考研] 316求調(diào)劑 +6 | 梁茜雯 2026-03-19 | 6/300 |
|
|
[考研] 一志愿山大07化學(xué) 332分 四六級已過 本科山東雙非 求調(diào)劑! +3 | 不想理你 2026-03-16 | 3/150 |
|
|
[考研] 295材料求調(diào)劑,一志愿武漢理工085601專碩 +5 | Charlieyq 2026-03-19 | 5/250 |
|
|
[考研] 353求調(diào)劑 +3 | 拉鉤不許變 2026-03-20 | 3/150 |
|
|
[考研] 工科材料085601 279求調(diào)劑 +7 | 困于星晨 2026-03-17 | 9/450 |
|
|
[考研] 085410人工智能專碩317求調(diào)劑(0854都可以) +4 | xbxudjdn 2026-03-18 | 4/200 |
|
|
[考研] 0703化學(xué)調(diào)劑 +5 | pupcoco 2026-03-17 | 8/400 |
|
|
[考研] 材料專碩306英一數(shù)二 +10 | z1z2z3879 2026-03-16 | 13/650 |
|
|
[考研] 材料,紡織,生物(0856、0710),化學(xué)招生啦 +3 | Eember. 2026-03-17 | 9/450 |
|
|
[考研] [導(dǎo)師推薦]西南科技大學(xué)國防/材料導(dǎo)師推薦 +3 | 尖角小荷 2026-03-16 | 6/300 |
|