sigma试剂 Methyl cellulose ,甲基纤维素,M0512 - viscosity 4,000 cP, 2 % in H2O（20 °C）（lit.）

SIGMA试剂 HT Media Supplement （50×） Hybri-Max，HT 培养基添加剂 （50×） Hybri-Max™，H0137- lyophilized powder, γ-irradiated, BioXtra, suitable for hybridoma

Sigma试剂 L-Homocystine， H6010 - ≥98% （TLC）

sigma试剂 L-（-）-Arabitol ，A3506 - ≥98%

sigma试剂 Protease from Streptomyces griseus ,P8811 - powder, BioReagent, suitable for mouse embryo cell culture, ≥3.5 units/mg solid

sigma试剂DL-4-Hydroxy-3-methoxymandelic acid ,DL-4-羟基-3-甲氧基扁桃酸,H0131 - ≥98% （TLC）, powder

sigma试剂 4-Hydroxy-3-methoxyphenylglycol sulfate potassium salt ,H8759 - ≥98% （HPLC）, powder

sigma试剂 Homovanillic acid,H1252 - Fluorimetric reagent

sigma试剂 3,4-Dihydroxyphenylacetic acid ,3,4-二羟基苯乙酸,850217 - 98%

sigma试剂 Chloroquine diphosphate salt ,氯喹 二磷酸盐,C6628 - solid, ≥98%