GeneDireX, Inc.

GScriptULTRA First-Strand Synthesis Kit (Random primer)

Size: 100 Reactions

Store at -20°C
Minimum shelf life: 1 year


  • Time efficiency – included most reagents for reverse transcription reaction.

Kit contents

Contents Size
Random Hexamers (50 μM) 100 μl
5X 1st strand buffer 500 μl
DTT (0.1 M) 100 μl
dNTP mix (10 mM) 100 μl
GScriptULTRA RTase 40 μl


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The GScriptULTRA First-Strand Synthesis Kit (Random primer) provides a convenient and sensitive of cDNA synthesis from RNA molecules by reverse transcription (RT). The kit consists of five major components: GScriptULTRA RTase, 5X 1st strand buffer, 0.1 M DTT, 50 μM Random Hexamers primer, and 10 mM dNTP (Deoxyribonucleotide triphosphates) mix. The GScriptULTRA RTase is a recombinant Moloney Murine Leukemia Virus (M-MLV) transcription polymerase expressed in E. coli and purified to homogeneity. It has lower RNase H activity and high thermal stability. The enzyme is widely used to synthesize first-strand cDNA at temperatures up to 55°C with increased specificity, higher yields of cDNA, and more full-length product than other reverse transcriptases. It can generate cDNA from 100 base pairs (bps) to 12 Kilo base pairs (kb). The 5X Reaction Mix buffer is optimized for reverse transcription. The DTT breaks the disulfide bonds, loosen the secondary structure of RNA, and helps in initiation for cDNA synthesis. Random Hexamers are short oligodeoxyribonucleotides of random sequences [d(N)6] that anneal to random complementary sites on a target RNA. The dNTP solution consists all four nucleotides (dATP, dCTP, dGTP, dTTP), suitable for use in cDNA synthesis.


  • Downstream application for PCR to detection of expressed genes, examination of transcript variants, or generation of cDNA templates for cloning and sequencing.

Quality Control
The quality of the GScriptULTRA First-Strand Synthesis Kit (Random primer) is tested on a lot-to-lot basis to ensure consistent product quality.





MB310-H100 SM310-H100
Random Hexamers (50 μM) Random Hexamers (50 μM)
5X 1st strand buffer 5X 1st strand buffer
DTT (0.1 M) DTT (0.1 M)
dNTP mix (10 mM) dNTP mix (10 mM)
GScriptULTRA RTase GScriptULTRA RTase