Latanoprost

Latanoprost: prostaglandin F2 alpha analog (isopropyl ester).

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

Structure

Latanoprost: 2D structure drawn from the PubChem record (CID 5311221).

Compound data

CAS number

130209-82-4

Formula

C₂₆H₄₀O₅

Molecular weight

432.60 g/mol

Type

Prostaglandin F2 alpha analog (isopropyl ester)

Structure and names

Identity: Latanoprost

IUPAC name: propan-2-yl (Z)-7-[(1R,2R,3R,5S)-3,5-dihydroxy-2-[(3R)-3-hydroxy-5-phenylpentyl]cyclopentyl]hept-5-enoate

How Vanguard tests Latanoprost

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 including latanoprost related compound E, and optical rotation and water. Full testing to the USP Latanoprost 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

Latanoprost (CAS 130209-82-4)
Tell us the salt or form the label states, so quantity is reported on the same basis.

Questions about Latanoprost 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 assay, with LC-MS to confirm identity. Full testing to the USP Latanoprost monograph is available and quoted.

Is latanoprost heat sensitive?

Yes. Latanoprost is an ester that degrades with heat and light, mainly to latanoprost acid by hydrolysis, so samples are best shipped cold.

What form does latanoprost usually arrive in?

Usually a low-concentration ophthalmic solution or the neat oil. The low concentration matters for quantity testing, so state the labeled strength when submitting.

Does latanoprost have isomers to watch for?

Yes. Known related compounds include the 15(S) epimer and the 5,6-trans isomer, which differ from latanoprost only in geometry, so they need a chromatographic method that separates them.

Sources

https://pubchem.ncbi.nlm.nih.gov/compound/5311221

Identity facts from the USP monograph header for this compound.

Order

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