| B753 | 生化试剂VitaminK3(Menadione)(甲萘醌) | 25g原装/100g原装 | 510/1700 | Sigma M5625 |
| B760 | 生化试剂X-a-gluc | 10mg原装/100mg原装 | 250/1680 | INALCO1758-0475 |
| B761 | 生化试剂Xanthine(黄嘌呤) | 1g/10g/100g原装 | 80/480/3300 | Sigma X-7375 |
| B762 | 生化试剂Xanthioneoxoidase(黄嘌呤氧化酶) | 5u原装/25u原装/50u原装 | 610/1650/2270 | Sigma X1875 |
| B763 | 生化试剂X-Gal(5-溴-4-氯-3-吲哚-b-D-半乳糖苷) | 100mg | 70 | Amresco分装 |
| B764 | 生化试剂X-Galactosaminide | 10mg原装/100mg原装 | 250/1680 | INALCO1758-0125 |
| B765 | 生化试剂X-gluc(5-Bromo-4-Chloro-3-Indolyl-β-D-Glucuronicacid) | 10mg/100mg原装/500mg | 180/980/2900 | INALCO1758-0600 |
| B766 | 生化试剂X-GlucNa | 10mg原装/100mg原装 | 250/1680 | INALCO1758-0700 |
| B767 | 生化试剂X-Glucosaminide | 10mg/100mg原装 | 250/950 | INALCO1758-0150 |
| B768 | 生化试剂X-Glucoside(5-溴-4-氯-3-吲哚基-beta-D-吡喃葡糖苷) | 25mg原装/100mg原装 | 250/900 | INALCO1758-0500 |
| B769 | 生化试剂Xylan(木聚糖) | 5g/10g/25g/100g原装 | 220/360/790/2780 | Sigma分装 |
| B770 | 生化试剂XyleneCyanolFF(二甲苯蓝,二甲苯青) | 1g/5g/10g | 80/130/390 | Amresco分装 |
| B771 | 生化试剂Xylitol(木糖醇) | 100g/1kg/5kg | 70/500/2350 | 国产 |
| B772 | 生化试剂X-α-gal | 10mg原装/100mg原装 | 210/1250 | INALCO1758-0200 |
| B780 | 生化试剂YeastExtractTechnical | 500g原装/10kg原装 | 510/4590 | BD 288610 |
| B781 | 生化试剂YeastNitrogenBase(酵母氮源) | 100g原装 | 550 | BD 239210 |
| B785 | 生化试剂YNB(无氨基酸酵母氮源) | 100g/500g/2kg原装 | 350/1280/3870 | BD 291920 |
| B786 | 生化试剂Zeatin(玉米素) | 5mg/25mg/50mg | 430/1810/3450 | Sigma Z0164 |
| B787 | 生化试剂Zein(玉米蛋白) | 100g/500g/1kg原装 | 300/1250/2100 | Sigma Z3625 |
| B788 | 生化试剂Zeocin(博莱霉素) | 1g | 3030 | INVITROGEN |
| B789 | 生化试剂α-Lactose(α-乳糖) | 250g/500g/1kg/5kg原装 | 100/160/270/1120 | Sigma L3625 |
| B790 | 生化试剂β-D-Glucan(β－葡聚糖) | 50mg/250mg/1g原装 | 480/1350/4250 | Sigma G6513 |
| B791 | 生化试剂酵母粉 | Oxoid原装500g/国产500g | 200/120 | |
