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Antibiotics and anti-infectives

Valacyclovir

Also known as Valaciclovir, ValACV, Zelitrex

CAS 124832-26-4Formula C13H20N6O4Molar mass 324.34 g/molEC 603-015-6
GHS signal word: Warning. Pictograms: Harmful or irritant 66 suppliers listed Drug substance
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Valacyclovir chemical structure, C13H20N6O4, CAS 124832-26-4
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
124832-26-4
Formula
C13H20N6O4
Molar mass
324.34 g/mol
Solubility
Crystalline solid, occurs as hydrate. UV max (water): 252.8 nm (e 8530). Solubility in w…
HS code
293359
Category
Antibiotics and anti-infectives

What is Valacyclovir?

Plain description, key identifiers and synonyms

Valacyclovir is a L-valyl ester. It has a role as an antiviral drug. It is functionally related to a guanine. It is a conjugate base of a valacyclovir(1+).

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
2-[(2-amino-6-oxo-1H-purin-9-yl)methoxy]ethyl (2S)-2-amino-3-methylbutanoate
CAS number
124832-26-4 CAS number cross-checkedOther or deprecated CAS: 124832-27-5
EC numbers
603-015-6, 658-047-3
Molecular formula
C13H20N6O4
UNII
MZ1IW7Q79D
InChIKey
HDOVUKNUBWVHOX-QMMMGPOBSA-N
InChI
InChI=1S/C13H20N6O4/c1-7(2)8(14)12(21)23-4-3-22-6-19-5-16-9-10(19)17-13(15)18-11(9)20/h5,7-8H,3-4,6,14H2,1-2H3,(H3,15,17,18,20)/t8-/m0/s1
Canonical SMILES
CC(C)C(N)C(=O)OCCOCn1cnc2c(=O)[nH]c(N)nc21
Isomeric SMILES
CC(C)[C@@H](C(=O)OCCOCN1C=NC2=C1N=C(NC2=O)N)N

Synonyms

  • Valaciclovir
  • ValACV
  • Zelitrex
  • Val-ACV
  • L-Valine ester with 9-((2-hydroxyethoxy)methyl)guanine
  • L-Valine, 2-((2-amino-1,6-dihydro-6-oxo-9H-purin-9-yl)methoxy)ethyl ester
  • L-Valine, 2-[(2-amino-1,6-dihydro-6-oxo-9H-purin-9-yl)methoxy]ethyl ester
  • 2-[(2-amino-6-oxo-6,9-dihydro-3H-purin-9-yl)methoxy]ethyl (2S)-2-amino-3-methylbutanoate
  • Valaciclovirum
  • L-valylacyclovir
  • L Valylacyclovir
  • 2-((2-amino-6-oxo-6,9-dihydro-3H-purin-9-yl)methoxy)ethyl (2S)-2-amino-3-methylbutanoate
  • L-valyl Ester Acyclovir
  • acyclovir, L-valyl ester
  • Acyclovir, L valyl Ester
  • 2-((2-amino-1,6-dihydro-6-oxo-9H-purin-9-yl)methoxy)ethyl L-valinate
  • Valtrex
  • Valcyclovir
  • Valaciclovir (INN)
  • Valtrex (TN)
  • 2-[(2-amino-6-oxo-1,6-dihydro-9H-purin-9-yl)methoxy]ethyl L-valinate
  • 256U87 HCl
  • 2-[(2-amino-6-oxo-1H-purin-9-yl)methoxy]ethyl (2S)-2-amino-3-methylbutanoate
  • Valcivir
  • 2-[(2-amino-6-oxo-6,9-dihydro-1H-purin-9-yl)methoxy]ethyl (2S)-2-amino-3-methylbutanoate
Show all 33 synonyms
  • Talavir
  • Virval
  • Valacyclover Hydrochloric
  • Acyclovir-valine
  • Valaciclovir, Valtrex
  • 2-((2-amino-6-oxo-1,6-dihydro-9H-purin-9-yl)methoxy)ethyl L-valinate
  • TXC
  • Valtrex (TM)

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

Solubility
Crystalline solid, occurs as hydrate. UV max (water): 252.8 nm (e 8530). Solubility in water: 174 mg/mL /Valacyclovir hydrochloride/exp.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
324.34 g/molcalc.
Exact mass
324.1546 Dacalc.
LogP (octanol/water)
-0.8calc.
Topological polar surface area
151.1 Ųcalc.
Hydrogen bond donors
3calc.
Hydrogen bond acceptors
8calc.
Rotatable bonds
7calc.
Heavy atoms
23calc.
Rings
2calc.
Aromatic rings
2calc.
Fraction sp3 carbons
0.54calc.
Formal charge
0calc.
Stereocentres
1calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, O=c1[nH]cnc2nc[nH]c12

O=c1[nH]cnc2nc[nH]c12

2 rings, 10 atoms, the Hypoxanthine ring system.

586 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H302Harmful if swallowed.
Precautionary statements (5)
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • P301 + P317If swallowed: Get medical help.
  • P330Rinse mouth.
  • P501Dispose of contents and container in accordance with local regulations.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

Valacyclovir suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 66 suppliers
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Where suppliers are based

66 suppliers in 16 countries

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Valacyclovir price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Industries and functions

Pharmacological actions

  • Antiviral Agents

Roles

  • anti-HIV agent
  • anti-HSV agent
  • antibacterial agent
  • anticoronaviral agent
  • antiinfective agent
  • antimicrobial agent
  • antimicrobial drug
  • antineoplastic agent
  • antipsychotic agent
  • antiviral agent
  • antiviral drug
  • central nervous system depressant
  • central nervous system drug
  • pharmaceutical
  • psychotropic drug
  • tranquilizing drug

Pharmacology

Valacyclovir is a Herpes Simplex Virus Nucleoside Analog DNA Polymerase Inhibitor, and Herpes Zoster Virus Nucleoside Analog DNA Polymerase Inhibitor, and Herpesvirus Nucleoside Analog DNA Polymerase Inhibitor. The mechanism of action of valacyclovir is as a DNA Polymerase Inhibitor.

How it is made

Preparation: T.A. Krenitsky et al., EP 308065, L.M. Beauchamp, US 4957924 (1989, 1990 both to Wellcome)

Regulatory status

Inventories, regulations and trade controls that list this substance

Health and food

  • Active ingredient in FDA approved drug labels

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Valacyclovir is traded under.

HS 2933.59Indicative HS code

Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring, other

World exports in 2024
$18.4B
+10.5% vs 2023, imports $24.8B
2019 to 2024
Top exporters
  1. Ireland43.6%
  2. Switzerland * partner reported26.3%
  3. China7.9%
Top importers
  1. Slovenia30.3%
  2. United States30.1%
  3. Germany15.3%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Valacyclovir is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Valacyclovir, based on the data on this page

What is Valacyclovir?

Valacyclovir is a L-valyl ester. It has a role as an antiviral drug. It is functionally related to a guanine. It is a conjugate base of a valacyclovir(1+).

What is the CAS number of Valacyclovir?

The CAS registry number of Valacyclovir is 124832-26-4. Other or deprecated CAS numbers: 124832-27-5.

What is the molecular formula and weight of Valacyclovir?

The molecular formula of Valacyclovir is C13H20N6O4 and its molar mass is 324.34 g/mol.

What is Valacyclovir used for?

Known uses and roles of Valacyclovir include antivirals in pharmaceuticals, anti-hiv agent, anti-hsv agent, antibacterial agent, anticoronaviral agent and 13 more.

Is Valacyclovir hazardous?

Valacyclovir carries the GHS signal word "Warning". Main hazards: harmful if swallowed. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Valacyclovir?

Valacyclovir is usually classified under HS code 293359 (Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Valacyclovir?

CompoundList lists 66 suppliers of Valacyclovir in United States, China, India, Germany and 12 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Valacyclovir in India?

7 suppliers in India list Valacyclovir on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Valacyclovir?

Suppliers quote Valacyclovir on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Valacyclovir

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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