| B444 | L-LacticacidLithium(L-乳酸锂) | 10g/25g/100g原装 | 270/570/1920 | Sigma L2250 |
| B445 | L-Leucine(L-亮氨酸) | 10g | 100 | Sigma分装 |
| B446 | L-Leucine(L-亮氨酸) | 25g/100g/250g/500g | 50/170/360/580 | 国产 |
| B447 | L-Lysine(L-赖氨酸) | 25g/100g/250g/500g | 60/180/400/650 | 国产 |
| B448 | L-LysineHCl(L-赖氨酸盐酸盐) | 100g/250g/Sigma25g | 70/140/80 | 国产 |
| B449 | L-Malicacid(L-苹果酸) | 10g/25g/100g/500g原装 | 150/260/800/3700 | Sigma M1000 |
| B450 | L-Methionine(L-甲硫氨酸(蛋氨酸)) | 25g/100g/250g/Sigma5g | 90/190/380/50 | 国产 |
| B451 | LoadingBuffer | 1ml/5ml | 50/120 | 国产 |
| B452 | Locustbeangum(槐豆胶) | 25g/100g/500g原装 | 110/280/1250 | Sigma G0753 |
| B453 | L-OrnithineHCl(L-鸟氨酸盐酸盐) | 10g/25g/50g/100g | 100/150/290/510 | 国产 |
| B454 | L-Phenylalanine(L-苯丙氨酸) | 25g/100g/250g/500g | 80/170/340/560 | 国产 |
| B455 | L-Proline(L-脯氨酸) | 25g/100g/250g/500g | 90/260/630/850 | 国产 |
| B456 | LPS(脂多糖、内毒素) | 10mg/100mg | 350/2800 | Sigma分装 |
| B457 | L-Serine(L-丝氨酸) | 25g/100g/250g/500g | 140/360/880/1450 | 国产 |
| B458 | L-Threonine(L-苏氨酸) | 5g | 110 | Sigma分装 |
| B459 | L-Threonine(L-苏氨酸) | 25g/100g/250g/500g/1kg | 80/160/290/480/750 | 国产 |
| B460 | L-Thyroxine(L-甲状腺素) | 100mg/1g原装 | 210/1730 | Sigma T2501 |
| B461 | L-Tryptophan（L-色氨酸） | 5g | 230 | Sigma T0254 |
| B462 | L-Tryptophan（L-色氨酸） | 25g/100g/250g/500g | 140/360/880/1450 | 国产 |
| B463 | L-Tyrosine(L-酪氨酸) | 25g/100g/250g/500g/1kg | 60/130/300/480/750 | 国产 |
| B464 | L-Valine(L-缬氨酸) | 25g /100g/250g/500g | 100/260/570/890 | 国产 |
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