Acyclovir

Acyclovir: antiviral nucleoside analog.

Acyclovir testing at Vanguard Laboratory: identity, purity and quantity $250 per sample, with results in 3 to 5 business days.

Structure

Acyclovir: 2D structure drawn from the PubChem record (CID 135398513).

Compound data

CAS number

59277-89-3

Formula

C₈H₁₁N₅O₃

Molecular weight

225.21 g/mol

Type

Antiviral nucleoside analog

Structure and names

Identity: Acyclovir

IUPAC name: 2-amino-9-(2-hydroxyethoxymethyl)-1H-purin-6-one

How Vanguard tests Acyclovir

Method for the $250 identity, purity and quantity test: HPLC-UV purity and assay, LC-MS identity, against a reference standard, with results in 3 to 5 business days.

The USP monograph covers identity by infrared spectroscopy and HPLC retention time, assay by HPLC, organic impurities by HPLC, and water content. Full testing to the USP Acyclovir monograph is available and quoted.

What's reported

Purity, as percent of total peak area
Quantity, against the label claim
Identity, reported as match or no match against the reference standard
With monograph testing (quoted): the monograph’s tests against its limits

Tests and prices

Purity and quantity

$250

Chromatographic purity and mg per unit by the method matched to the compound, identity against a reference standard. 1 unit.

Raw powder purity

$200

Chromatographic purity on bulk powder. 50 mg.

Add-on tests

Add-on test	Price
Identity and impurities
FTIR identity	$90
CHNS elemental analysis (carbon, hydrogen, nitrogen, sulfur)	$125
Chiral purity (where a chiral method exists; new methods quoted)	$250
Water, solvents and salt form
Water content by Karl Fischer	$60
Residual solvents	$150
Counterions: chloride, acetate and TFA	$70
Assay
Assay, % w/w (with raw powder purity; $250 together)	+$50
Metals and conformity
Heavy metals: arsenic, cadmium, chromium, mercury and lead	$150
Conformity: purity and quantity on more units from the same lot	$100 per extra unit
Microbiology (injectables)
Endotoxin	$210
Sterility or bioburden	$150
Container closure integrity (CCI)	$50
Screening
Fentanyl screen	$50

10% off for 10 or more samples.

Need something else? Other tests are available on request.

Sample amount and turnaround

Purity and quantity is $250 per sample (1 unit) and raw powder purity is $200 for 50 mg, with results in 3 to 5 business days. Send the material sealed and labeled, with the label claim and the form it contains.

Salts, forms and compendial references

Acyclovir (CAS 59277-89-3)
Tell us the salt or form the label states, so quantity is reported on the same basis.

Questions about Acyclovir testing

Is the $250 test the same as USP monograph testing?

No. The $250 test covers identity, purity and quantity by HPLC-UV for purity and quantity and LC-MS for identity. Full testing to the USP Acyclovir monograph is available and quoted.

What is the main impurity in acyclovir?

Guanine is the main specified impurity and comes from synthesis or breakdown of acyclovir. It is very polar and elutes early in the HPLC run, where it is measured separately.

Why does water content matter for acyclovir?

Acyclovir raw material often holds some water and can exist in hydrated forms. Results are calculated on the anhydrous basis, so water content is needed to compare purity across lots.

Can acyclovir be tested in a cream?

Yes. Creams and ointments are dispersed and extracted to remove the base before HPLC, and the result is reported against the label strength.

Sources

https://pubchem.ncbi.nlm.nih.gov/compound/135398513

Identity facts from the USP monograph header for this compound.

Order

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