Pritelivir mesylate

    WARNING: This product is for research use only, not for human or veterinary use.

MedKoo CAT#: 330140

CAS#: 1428333-96-3 (mseylate)

Description: Pritelivir, also known as AIC-316 and BAY 57-1293, is a potent helicase primase inhibitor. BAY 57-1293 inhibits replication of herpes simplex virus (HSV) type 1 and type 2 in the nanomolar range in vitro by abrogating the enzymatic activity of the viral primase-helicase complex. In various rodent models of HSV infection the antiviral activity of BAY 57-1293 in vivo was found to be superior compared to all compounds currently used to treat HSV infections. The compound shows profound antiviral activity in murine and rat lethal challenge models of disseminated herpes, in a murine zosteriform spread model of cutaneous disease, and in a murine ocular herpes model. It is active in parenteral, oral, and topical formulations.

Price and Availability

Size Price Shipping out time Quantity
50mg USD 150 2 Weeks
100mg USD 250 2 Weeks
200mg USD 450 2 Weeks
500mg USD 950 2 Weeks
1g USD 1450 2 Weeks
2g USD 2450 2 Weeks
5g USD 4850 2 Weeks
Inquire bulk and customized quantity

Pricing updated 2021-01-25. Prices are subject to change without notice.

Pritelivir mesylate, purity > 98%, is in stock. Current shipping out time is about 2 weeks after order is received. CoA, QC data and MSDS documents are available in one week after order is received.

Chemical Structure


Theoretical Analysis

MedKoo Cat#: 330140
Name: Pritelivir mesylate
CAS#: 1428333-96-3 (mseylate)
Chemical Formula: C19H22N4O6S3
Exact Mass:
Molecular Weight: 498.587
Elemental Analysis: C, 45.77; H, 4.45; N, 11.24; O, 19.25; S, 19.29

Related CAS #: 1428333-96-3 (mseylate)   348086-71-5 (free base)   910864-57-2 (HCl)   910864-61-8 (besylate)   2088209-68-9 (sulfate)    

Synonym: Pritelivir mesylate, BAY57-1293; BAY 57-1293; BAY-57-1293; BAY571293; BAY 571293; BAY-571293; AIC-316; AIC 316; AIC316; Pritelivir.

IUPAC/Chemical Name: N-methyl-N-(4-methyl-5-sulfamoylthiazol-2-yl)-2-(4-(pyridin-2-yl)phenyl)acetamide mesylate


InChi Code: InChI=1S/C18H18N4O3S2.CH4O3S/c1-12-17(27(19,24)25)26-18(21-12)22(2)16(23)11-13-6-8-14(9-7-13)15-5-3-4-10-20-15;1-5(2,3)4/h3-10H,11H2,1-2H3,(H2,19,24,25);1H3,(H,2,3,4)

SMILES Code: O=C(N(C)C1=NC(C)=C(S(=O)(N)=O)S1)CC2=CC=C(C3=NC=CC=C3)C=C2.OS(=O)(C)=O

Technical Data

Solid powder

>98% (or refer to the Certificate of Analysis)

Shipping Condition:
Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.

Storage Condition:
Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).

Soluble in DMSO

Shelf Life:
>2 years if stored properly

Drug Formulation:
This drug may be formulated in DMSO

Stock Solution Storage:
0 - 4 C for short term (days to weeks), or -20 C for long term (months).

HS Tariff Code:


1: Quenelle DC, Birkmann A, Goldner T, Pfaff T, Zimmermann H, Bonsmann S, Collins DJ, Rice TL, Prichard MN. Efficacy of pritelivir and acyclovir in the treatment of herpes simplex virus infections in a mouse model of herpes simplex encephalitis. Antiviral Res. 2018 Jan;149:1-6. doi: 10.1016/j.antiviral.2017.11.002. Epub 2017 Nov 4. PubMed PMID: 29113740; PubMed Central PMCID: PMC5743594.

2: Wald A, Timmler B, Magaret A, Warren T, Tyring S, Johnston C, Fife K, Selke S, Huang ML, Stobernack HP, Zimmermann H, Corey L, Birkmann A, Ruebsamen-Schaeff H. Effect of Pritelivir Compared With Valacyclovir on Genital HSV-2 Shedding in Patients With Frequent Recurrences: A Randomized Clinical Trial. JAMA. 2016 Dec 20;316(23):2495-2503. doi: 10.1001/jama.2016.18189. Erratum in: JAMA. 2017 Feb 14;317(6):648. PubMed PMID: 27997653.

3: Edlefsen PT, Birkmann A, Huang ML, Magaret CA, Kee JJ, Diem K, Goldner T, Timmler B, Stoelben S, Ruebsamen-Schaeff H, Zimmermann H, Warren T, Wald A, Corey L. No Evidence of Pritelivir Resistance Among Herpes Simplex Virus Type 2 Isolates After 4 Weeks of Daily Therapy. J Infect Dis. 2016 Jul 15;214(2):258-64. doi: 10.1093/infdis/jiw129. Epub 2016 Apr 7. PubMed PMID: 27056950; PubMed Central PMCID: PMC4918824.

4: Schiffer JT, Swan DA, Magaret A, Corey L, Wald A, Ossig J, Ruebsamen-Schaeff H, Stoelben S, Timmler B, Zimmermann H, Melhem MR, Van Wart SA, Rubino CM, Birkmann A. Mathematical modeling of herpes simplex virus-2 suppression with pritelivir predicts trial outcomes. Sci Transl Med. 2016 Feb 3;8(324):324ra15. doi: 10.1126/scitranslmed.aad6654. PubMed PMID: 26843190; PubMed Central PMCID: PMC4880060.

5: Burrel S, Rouard C, Boutolleau D. Helicase-primase inhibitor pritelivir for HSV-2 infection. N Engl J Med. 2014 Apr 24;370(17):1663-4. doi: 10.1056/NEJMc1402071. PubMed PMID: 24758629.

6: Biswas S, Sukla S, Goldner T, Field HJ, Kropeit D, Paulsen D, Welbers A, Ruebsamen-Schaeff H, Zimmermann H, Birkmann A. Pharmacokinetics-pharmacodynamics of the helicase-primase inhibitor pritelivir following treatment of wild-type or pritelivir-resistant virus infection in a murine herpes simplex virus 1 infection model. Antimicrob Agents Chemother. 2014 Jul;58(7):3843-52. doi: 10.1128/AAC.02641-14. Epub 2014 Apr 21. PubMed PMID: 24752278; PubMed Central PMCID: PMC4068558.

7: Wald A, Corey L, Timmler B, Magaret A, Warren T, Tyring S, Johnston C, Kriesel J, Fife K, Galitz L, Stoelben S, Huang ML, Selke S, Stobernack HP, Ruebsamen-Schaeff H, Birkmann A. Helicase-primase inhibitor pritelivir for HSV-2 infection. N Engl J Med. 2014 Jan 16;370(3):201-10. doi: 10.1056/NEJMoa1301150. PubMed PMID: 24428466.

8: Field HJ, Huang ML, Lay EM, Mickleburgh I, Zimmermann H, Birkmann A. Baseline sensitivity of HSV-1 and HSV-2 clinical isolates and defined acyclovir-resistant strains to the helicase-primase inhibitor pritelivir. Antiviral Res. 2013 Nov;100(2):297-9. doi: 10.1016/j.antiviral.2013.08.024. Epub 2013 Sep 8. PubMed PMID: 24021190.