Invitrogen SuperScript III Reverse Transcriptase is a genetically engineered MMLV reverse transcriptase (RT) that was created by introduction of several mutations for reduced RNase H activity, increased half-life, and improved thermal stability. SuperScript III RT offers higher cDNA yields, improved cDNA lengths, improved efficiency on GC-rich target RNAs, and overall better performance than wild-type MMLV and MMLV RNase H-minus enzymes.
SuperScript RTs are the most highly trusted and widely used RTs with over 50,000 citations, reviews, and publications to date.
Note: The latest member of the SuperScript RT family, SuperScript IV Reverse Transcriptase, features enhanced thermostability, processivity, yields, and performance with any RNA samples, including those of suboptimal purity or integrity.
For Research Use Only. Not for use in diagnostic procedures.
RNA dependent DNA Polymerase
No. of Tests
Optimal Reaction Temperature
Ribonuclease H Activity
GC-Rich PCR Performance
No. of Reactions
Size (Final Product)
12.3 kb or less
Contents & Storage
SuperScript™ III Reverse Transcriptase (10,000 units total, at 200U/µL) is supplied with a vial (1 mL) of 5X first-strand buffer [250 mM Tris-HCl (pH 8.3), 375 mM KCl, 15 mM MgCl2], and a vial (500 µL) of 100 mM DTT. Store at -20°C.