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P1038 Sigma

Poly(cytidylic-inosinic) acid potassium salt

random copolymer

Synonym: Poly (C,I)



Frequently Asked Questions

Frequently Asked Questions are available for this Product.

Other Notes

Random copolymer


10 mg in poly bottle

5 mg in glass bottle


Poly(cytidylic-inosinic) Poly(C,I) is a random copolymer of inosine and cytidine bases which may be useful for comparative physicochemical analysis versus other random copolymers such as Poly(C,A), Poly(C,U) and Poly(C,G).

Price and Availability

Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 

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: http://www.sigmaaldrich.com/catalog/AdvancedSearchPage.do
What can I use to solubilize Poly(cytidylic-inosinic) acid potassium salt (Poly (C:I)), Product P1038?
The product is soluble in water at 10 mg/mL.
How large/long a polymer is Poly(cytidylic-inosinic) acid potassium salt (Poly (C:I)), Product P1038?
The average length of this polynucleotide has not been determined.
Is Poly(cytidylic-inosinic) acid potassium salt (Poly (C:I)), Product P1038, single or double stranded?
Product No. P1038 is a single-stranded random co-polymer.
Will Poly(cytidylic-inosinic) acid potassium salt (Poly (C:I)), Product P1038, work to induce interferon production?
P1038 is a single stranded RNA. For cell activation, synthetic double-stranded RNA is widely used as the ligand of Toll-like receptor 3 (TLR3) in place of what is supposed to be the natural ligand (viral dsRNA). This would be Product No. P9582, a double stranded RNA homopolymer, i.e. Poly(I): Poly(C). This product is widely used by other satisfied customers for cell activation.
Is Poly(cytidylic-inosinic) acid potassium salt (Poly (C:I)), Product P1038, product sterile?
Product No. P1038 is not sterile. The product is produced in non-sterile conditions and the level of endotoxin content is not determined.
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.
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