Grazoprevir (MK5172)

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

MedKoo CAT#: 501205

CAS#: 1350514-68-9 (free)

Description: Grazoprevir, also known as MK5172, is a drug approved for the treatment of hepatitis C. It was developed by Merck and completed Phase III trials, following promising results in Phase II when used in combination with the NS5A replication complex inhibitor elbasvir, either with or without ribavirin.Grazoprevir is a second generation hepatitis C virus protease inhibitor acting at the NS3/4a protease targets. It has good activity against a range of HCV genotype variants, including some that are resistant to most currently used antiviral medications.

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Grazoprevir (MK5172), purity > 98%, is in stock. The same day shipping out after order is received. Note: the estimated shipping out time for order > 500mg may be 2 weeks.

Chemical Structure


Theoretical Analysis

MedKoo Cat#: 501205
Name: Grazoprevir (MK5172)
CAS#: 1350514-68-9 (free)
Chemical Formula: C38H50N6O9S
Exact Mass: 766.336
Molecular Weight: 766.911
Elemental Analysis: C, 59.51; H, 6.57; N, 10.96; O, 18.78; S, 4.18

Related CAS #: 1350514-68-9 (free)   1350462-55-3 (hydrate)  

Synonym: MK-5172; MK 5172; MK5172; Grazoprevir. trade name: Zepatier‎.

IUPAC/Chemical Name: (33R,35S,91R,92R,5S)-5-(tert-butyl)-N-((1R,2S)-1-((cyclopropylsulfonyl)carbamoyl)-2-vinylcyclopropyl)-17-methoxy-4,7-dioxo-2,8-dioxa-6-aza-1(2,3)-quinoxalina-3(3,1)-pyrrolidina-9(1,2)-cyclopropanacyclotetradecaphane-35-carboxamide


InChi Code: InChI=1S/C38H50N6O9S/c1-6-22-19-38(22,35(47)43-54(49,50)25-13-14-25)42-32(45)29-18-24-20-44(29)34(46)31(37(2,3)4)41-36(48)53-30-16-21(30)10-8-7-9-11-27-33(52-24)40-28-17-23(51-5)12-15-26(28)39-27/h6,12,15,17,21-22,24-25,29-31H,1,7-11,13-14,16,18-20H2,2-5H3,(H,41,48)(H,42,45)(H,43,47)/t21-,22-,24-,29+,30-,31-,38-/m1/s1

SMILES Code: O=C([C@H]1N2C([C@H](C(C)(C)C)NC(O[C@]3([H])C[C@@]3([H])CCCCCC4=NC5=CC=C(OC)C=C5N=C4O[C@](C2)([H])C1)=O)=O)N[C@@]6(C(NS(=O)(C7CC7)=O)=O)[C@H](C=C)C6

Technical Data

Solid powder

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

Certificate of Analysis:

Safety Data Sheet (MSDS):

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, not in water

Shelf Life:
>5 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).

Harmonized System Code:

Additional Information

MK-5172, is a Next Generation HCV NS3/4a Protease Inhibitor with a Broad HCV Genotypic Activity Spectrum and Potent Activity Against Known Resistance Mutants, in Genotype 1 and 3 HCV-Infected Patients. MK-5172 exhibits excellent selectivity over other serine proteases such as elastase and trypsin (no measurable inhibition), and shows only modest inhibitory potency with chymotrypsin (IC50 = 1.5 µM; 75,000-fold selective). In the genotype 1b replicon assay, MK-5172 potently inhibits viral replication (IC50 = 2 nM) and demonstrates a modest shift in the presence of 50% NHS (EC50 = 9.5 nM). In vitro, MK-5172 inhibits the NS3/4A enzyme from genotypes 1b, 2a, 2b, and 3a with Ki values of <0.02, 0.15, 0.02, and 0.7 nM, respectively. The genotype 2a replicon is also potently inhibited by MK 5172 (EC50 = 5 nM).

Other CAS# related to Grazoprevir
Grazoprevir: CAS#1350514-68-9
Grazoprevir potassium :CAS#1206524-86-8
Grazoprevir sodium: CAS#1425038-27-2
Grazoprevir hydrate: CAS#1350462-55-3


1: Sulejmani N, Jafri SM, Gordon SC. Pharmacodynamics and pharmacokinetics of elbasvir and grazoprevir in the treatment of hepatitis C. Expert Opin Drug Metab Toxicol. 2016 Feb 5. [Epub ahead of print] PubMed PMID: 26849059.

2: Landaverde C, Wells J, Hamner R, Goldstein JL. Dual therapy of grazoprevir and elbasvir for the treatment of hepatitis C infection. Expert Rev Gastroenterol Hepatol. 2016 Jan 27. [Epub ahead of print] PubMed PMID: 26818134.

3: Roth D, Nelson DR, Bruchfeld A, Liapakis A, Silva M, Monsour H Jr, Martin P, Pol S, Londoño MC, Hassanein T, Zamor PJ, Zuckerman E, Wan S, Jackson B, Nguyen BY, Robertson M, Barr E, Wahl J, Greaves W. Grazoprevir plus elbasvir in treatment-naive and treatment-experienced patients with hepatitis C virus genotype 1 infection and stage 4-5 chronic kidney disease (the C-SURFER study): a combination phase 3 study. Lancet. 2015 Oct 17;386(10003):1537-45. doi: 10.1016/S0140-6736(15)00349-9. Epub 2015 Oct 5. PubMed PMID: 26456905.

4: Rockstroh JK, Nelson M, Katlama C, Lalezari J, Mallolas J, Bloch M, Matthews GV, Saag MS, Zamor PJ, Orkin C, Gress J, Klopfer S, Shaughnessy M, Wahl J, Nguyen BY, Barr E, Platt HL, Robertson MN, Sulkowski M. Efficacy and safety of grazoprevir (MK-5172) and elbasvir (MK-8742) in patients with hepatitis C virus and HIV co-infection (C-EDGE CO-INFECTION): a non-randomised, open-label trial. Lancet HIV. 2015 Aug;2(8):e319-27. doi: 10.1016/S2352-3018(15)00114-9. Epub 2015 Jul 9. Erratum in: Lancet HIV. 2015 Aug;2(8):e316. Lancet HIV. 2015 Oct;2(10):e416. PubMed PMID: 26423374.

5: Buti M, Gordon SC, Zuckerman E, Lawitz E, Calleja JL, Hofer H, Gilbert C, Palcza J, Howe AY, DiNubile MJ, Robertson MN, Wahl J, Barr E, Forns X. Grazoprevir, Elbasvir, and Ribavirin for Chronic Hepatitis C Virus Genotype 1 Infection After Failure of Pegylated Interferon and Ribavirin With an Earlier-Generation Protease Inhibitor: Final 24-Week Results From C-SALVAGE. Clin Infect Dis. 2016 Jan 1;62(1):32-6. doi: 10.1093/cid/civ722. Epub 2015 Sep 14. PubMed PMID: 26371152.

6: Lagging M, Brown A, Mantry PS, Ramji A, Weilert F, Vierling JM, Howe A, Gendrano IN 3rd, Hwang P, Zhang B, Wahl J, Robertson M, Mobashery N. Grazoprevir plus peginterferon and ribavirin in treatment-naive patients with hepatitis C virus genotype 1 infection: a randomized trial. J Viral Hepat. 2016 Feb;23(2):80-8. doi: 10.1111/jvh.12464. Epub 2015 Sep 10. PubMed PMID: 26353843.

7: Zeuzem S, Ghalib R, Reddy KR, Pockros PJ, Ben Ari Z, Zhao Y, Brown DD, Wan S, DiNubile MJ, Nguyen BY, Robertson MN, Wahl J, Barr E, Butterton JR. Grazoprevir-Elbasvir Combination Therapy for Treatment-Naive Cirrhotic and Noncirrhotic Patients With Chronic Hepatitis C Virus Genotype 1, 4, or 6 Infection: A Randomized Trial. Ann Intern Med. 2015 Jul 7;163(1):1-13. doi: 10.7326/M15-0785. PubMed PMID: 25909356.

8: Lawitz E, Gane E, Pearlman B, Tam E, Ghesquiere W, Guyader D, Alric L, Bronowicki JP, Lester L, Sievert W, Ghalib R, Balart L, Sund F, Lagging M, Dutko F, Shaughnessy M, Hwang P, Howe AY, Wahl J, Robertson M, Barr E, Haber B. Efficacy and safety of 12 weeks versus 18 weeks of treatment with grazoprevir (MK-5172) and elbasvir (MK-8742) with or without ribavirin for hepatitis C virus genotype 1 infection in previously untreated patients with cirrhosis and patients with previous null response with or without cirrhosis (C-WORTHY): a randomised, open-label phase 2 trial. Lancet. 2015 Mar 21;385(9973):1075-86. doi: 10.1016/S0140-6736(14)61795-5. Epub 2014 Nov 11. Erratum in: Lancet. 2015 Mar 21;385(9973):1074. PubMed PMID: 25467591.

9: Sulkowski M, Hezode C, Gerstoft J, Vierling JM, Mallolas J, Pol S, Kugelmas M, Murillo A, Weis N, Nahass R, Shibolet O, Serfaty L, Bourliere M, DeJesus E, Zuckerman E, Dutko F, Shaughnessy M, Hwang P, Howe AY, Wahl J, Robertson M, Barr E, Haber B. Efficacy and safety of 8 weeks versus 12 weeks of treatment with grazoprevir (MK-5172) and elbasvir (MK-8742) with or without ribavirin in patients with hepatitis C virus genotype 1 mono-infection and HIV/hepatitis C virus co-infection (C-WORTHY): a randomised, open-label phase 2 trial. Lancet. 2015 Mar 21;385(9973):1087-97. doi: 10.1016/S0140-6736(14)61793-1. Epub 2014 Nov 11. PubMed PMID: 25467560.