| B526 | NHS-d-biotin(N-羟基琥珀酰亚胺生物素) | 5mg 原装/25mg 原装 | 260/690 | Sigma H1759 |
| B527 | NiacinassayMedium | 100g原装 | 920 | BD 232210 |
| B528 | Nicotinicacid(烟酸(尼古丁酸VitaminB3)) | 25g/100g/500g/1kg原装 | 70/150/520/860 | Sigma N4126 |
| B529 | N-LauroylSarcosineSodium(十二烷基肌氨酸钠) | 50g/100g/250g/1kg | 100/140/290/890 | Amresco 0719 |
| B531 | N-Octyl-b-D-Glucopyranoside(n-辛基-b-D-吡喃葡萄糖苷) | 250mg/1g/5g | 150/550/1850 | INALCO原装 |
| B532 | n-辛基-b-D-吡喃葡萄糖苷，N-Octyl-b-D-Glucopyranoside | 1g 原装 | 680 | Amresco J575 |
| B533 | NutrientAgar(营养琼脂) | 100g原装/500g原装 | 370/910 | BD 212000 |
| B534 | NutrientBroth(营养肉汤) | 100g/500g/北京250g | 450/1180/100 | BD 233000 |
| B535 | Nystatin(Mycostatin)(制霉菌素) | 100mg原装/1g原装 | 120/880 | INALCO1758-9323 |
| B540 | OilRedO(油红O（苏丹红5B）) | 25g/50g/250g原装 | 130/210/880 | Amresco 0684 |
| B541 | OPD(邻苯二胺) | 5g/10g/50g/250g原装 | 70/110/280/1300 | Amresco 0688 |
| B542 | Paclobutrazol(多效唑) | 10g/250g | 60/280 | 国产 |
| B543 | PalcamMediumBase | 500g原装 | 1510 | BD 263620 |
| B544 | Palmiticacid(棕榈酸) | 10g原装/25g原装 | 520/1050 | Sigma P0500 |
| B545 | Papain(木瓜蛋白酶) | 5g/25g/100g原装 | 200/820/2750 | Sigma P3250 |
| B546 | Paraformaldehyde(多聚甲醛) | 100g/250g/1kg/5kg原装 | 60/100/260/1080 | Sigma P6148 |
| B547 | Pectin(果胶) | 25g/100g/500g/1kg原装 | 110/390/1850/3450 | Sigma P9135 |
| B548 | PectolaseY-23(果胶酶Y-23) | 100mg/500mg/1g/10g原装 | 160/750/1180/9800 | Yakult.JAPAN |
| B549 | PEG12000(聚乙二醇12000) | 100g /1kg 原装 | 110/770 | Fluka 81285 |
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