DrugDashboards

Grafapex

treosulfan · TREOSULFAN 1000 mg/g · Injection, Powder, Lyophilized, For Solution · Intravenous · Medexus Pharma, Inc.

NDC 59137-0335-01 · 1 VIAL in 1 CARTON / 1 g in 1 VIAL · NDA · View full market →

The short version

Only one company currently supplies this market — there is no backup if it stumbles.

The numbers behind every sentence are on this page below — and the Watch button emails you when any of them move.

Medicare Part D

No Medicare Part D plan in CMS's quarterly files lists this product. That usually means it is discontinued, a repackager's listing, or a product no plan has added to its formulary.

How Part D pricing works →

NADAC price per unit

No NADAC pricing on file for this NDC — NADAC covers drugs dispensed by retail community pharmacies.

Estimated fill cost

WAC per package, as filed
$610.00
Reported to Texas DSHS · 2026 annual filing · Medexus Pharma Inc

Manufacturer list price as filed — not what pharmacies actually pay after discounts.

Medicare Part B (ASP)

Payment limit per 50 MG
$32.330
HCPCS J0614 · Jul 1, 2026 quarter · typically ASP + 6%

Supply fragility

Not scored — fragility is computed for NADAC-priced NDCs.

Where it's made

Establishments this product's FDA label declares, located via FDA registration data. How we built this →

Is this a "specialty" drug?

There's no legal definition — it meets 2 of 6 public criteria. Why that matters →

  • Part D specialty tier
  • Costs ≥ $950/fill
  • Biologic (BLA)
  • Injectable / infused
  • Orphan-drug exclusivity
  • REMS program

Regulatory

Application
NDA214759
TE code
Approval date
Jan 21, 2025
Patents / exclusivity
2 patents, 6 exclusivities
TypeNumber / codeExpires
exclusivityODE-514Jan 21, 2032
exclusivityODE-513Jan 21, 2032
exclusivityODE-514Jan 21, 2032
exclusivityODE-513Jan 21, 2032
exclusivityNCEJan 21, 2030
exclusivityNCEJan 21, 2030
patent7199162Oct 12, 2026
patent7199162Oct 12, 2026

Shortage history

No FDA shortage reports for this drug or its presentations.

Recalls (this NDC)

No enforcement reports list this package NDC.

Manufacturers of treosulfan (Injection, Powder, Lyophilized, For Solution)

LabelerStrengthFirst seenLast seen
Medexus Pharma, Inc.TREOSULFAN 1000 mg/gJul 15, 2026Sep 2, 2026
Medexus Pharma, Inc.TREOSULFAN 5000 mg/5gJul 15, 2026Sep 2, 2026

Roster from daily NDC Directory diffs — first/last seen dates start July 2026.

Cite this page

DrugDashboards, "Grafapex — NDC 59137-0335-01," retrieved September 3, 2026, https://drugdashboards.com/drug/59137033501.

Free to cite with attribution — see how the data is put together.