R4533 Sigma

RNAzol® RT

For processing total and small RNA from human, animal, plant, bacterial,and viral samples



Frequently Asked Questions

Frequently Asked Questions are available for this Product.


RNAzol RT is a highly effective reagent for the single-step isolation of total and small RNA from human, animal, plant, bacterial and viral origin samples. The RNA isolation method based on this reagent is performed at room temperature, without the use of chloroform for phase separation, and allows for use in RT-PCR without requiring DNase treatment.

Isolated RNA can be used for Northern blots, RNase protection assay, microarrays, PCR, and other molecular biology applications.

Features and Benefits

• Isolates micro RNA and total RNA isolation of pure and undegraded RNA from biological samples
• High yields and increased quality of isolated RNA
• Completed at room temperature in less than an hour starting with fresh tissue or cells

General description

RNAzol RT is a quick and convenient reagent for use in the single-step isolation of total and small RNA from biological samples of human, animal, plant, yeast, bacterial, and viral origin. A convenient single-step liquid phase separation results in the isolation of RNA from DNA, protein, polysaccharides, and other molecules. RNAzol® RT can be used to isolate separate fractions of mRNA and micro RNA or to isolate total RNA, containing all classes of RNA in a single fraction.

This product, a mixture of guanidine thiocyanate and phenol in a monophase solution, effectively dissolves DNA, RNA, and protein on homogenization or lysis of tissue sample. Addition of water to the mixture allows for the precipitation of DNA, proteins, polysaccharides and other molecules, which can then be removed by centrifugation. RNA can then be isolated by alcohol precipitation, washing and solubilization. Chloroform-induced phase separation is not necessary. One mL of RNAzol® RT is sufficient to isolate RNA from up to 100 mg of tissue or 10e7 cells.

This is one of the most effective methods for isolating total and small RNA and can be completed at room temperature in less than 1 hour starting with fresh tissue or cells. The procedure is very effective for isolating RNA molecules of all types: large nuclear RNA, rRNA, mRNA, small RNA and micro RNA. The resulting RNA is intact with little or no contaminating DNA and protein.

Legal Information

RNAZol is a registered trademark of Molecular Research Center, Inc.

Price and Availability

NAP and qPCR Reagents from Roche

Microcon Centrifugal Filters

All labs need water
Safety & Documentation

Safety Information

Signal word 
Supplemental Hazard Statements 
Contact with acids liberates very toxic gas.
UN 1760 8 / PGII
WGK Germany 
Flash Point(F) 
230 °F
Flash Point(C) 
110 °C


Certificate of Analysis

Certificate of Origin

Frequently Asked Questions

Which document(s) contains shelf-life or expiration date information for a given product?
If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis. These documents are located on the product detail page under Useful Links & Tools. Click on the following link to search for a Certificate of Analysis. Please click the following link to see the details on our Product Dating Information.
How do I get lot-specific information or a Certificate of Analysis?
A Certificate of Analysis is available by lot number and can be obtained through our Advanced Search Option:
How do I find price and availability?
There are several ways to find pricing and availability for our products.  Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote.  USA customers:  1-800-325-3010 or view local office numbers. 
What is the Department of Transportation shipping information for this product?
Transportation information can be found in Section 14 of the product's (M)SDS. To access the shipping information for this material, use the link on the product detail page for the product, or search here. 
My question is not addressed here, how can I contact Technical Service for assistance?
Use the option to the right to "Ask a Question" by email of a Technical Service Scientist.
What color is Product R4533, RNAzol® RT?
Product R4533, RNAzol® RT is a blue solution at both 4°C and room temperature.
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Protocols & Articles


Sample Purification & Quality Assessment - PCR Technologies Guide

The availability of simple methods for purification of DNA and RNA has greatly facilitated the analysis and characterization of the genome and gene expression. There is a demand to isolate DNA and RN...
Keywords: AGE, Absorption, Amplification, Bio-Analytical, Buffers, Capillary electrophoresis, Cell disruption, Centrifugation, Chromatin immunoprecipitation, DNA purification, Degradations, Detection methods, Detergents, Digestions, Electrophoresis, Extinction coefficient, Filtration, Gel electrophoresis, Gene expression, Indicators, Lab-on-a-chip, Molecular biology, Nucleic acid hybridization, Nucleic acid purification, Polymerase chain reaction, Polymerase chain reaction - quantitative, Precipitation, Purification, RNA purification, Separation, Spectroscopy, Transcription, Ultraviolet-Visible spectroscopy


MystiCq® MicroRNA® Quantitation System

Technology Overview Workflow Background Protocols miRNA isolation cDNA synthesis miRNA qPCR Advanced information Product selection guides Troubleshooting
Keywords: AGE, Amplification, Buffers, Cell disruption, Centrifugation, Degradations, Diagnostic, Digestions, Diseases, Electrophoresis, Gel electrophoresis, Gene expression, Homogenization, Microarray Analysis, Molecular biology, Nucleic acid annealing, Nucleic acid denaturation, Polymerase chain reaction, Polymerase chain reaction - quantitative, Precipitation, Purification, RNA purification, Sample preparations, Separation, Solvents, Titrations

Peer-Reviewed Papers


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Technical Service:

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

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