Fosphenytoin sodium

Drug ingredient

CAS 92134-98-0

This chemical is an active pharmaceutical ingredient used in FDA-regulated drugs.

Molecular structure of 92134-98-0 — 2 Na⁺

US productionNot reported

Top sourceNo public record

This chemical is not on EPA’s Toxic Substances Control Act inventory, the list behind EPA’s production survey.

Why supply is unknown

Where It Comes From

EPA and Census publish no US supply data for this chemical.

12 FDA-registered drug labelers

Alchymars ICM SM Private Limited

Amneal Pharmaceuticals LLC

Fresenius Kabi USA, LLC

Gland Pharma Limited

GLENMARK PHARMACEUTICALS INC., USA

Guangan Kingday Pharma & Chem Co., Ltd.

Hikma Pharmaceuticals USA Inc.

MAHI DRUGS PRIVATE LIMITED

Pfizer Laboratories Div Pfizer Inc

Sagent Pharmaceuticals

SUN PHARMACEUTICAL INDUSTRIES, INC.

West-Ward Pharmaceuticals Corp

Why It Matters

Sectors

Health

Downstream Uses

Appears in 3 drug and cosmetic product listings (FDA).

•Cerebyx
•Fosphenytoin Sodium
•Fosphenytoin

FDA Shortage Status

Whether any manufacturer currently reports this drug as in shortage on the FDA Drug Shortages database. "Active Shortage" means at least one presentation has status "current."

No FDA shortage records

Vendor Pricing

$86.40/gCombi-Blocks, Inc.

CountryUnited States

Pack$2160.00 / 25 g

Purity98%

Vendors6 available

Prices reflect listed pack sizes. Small research packs run far above bulk rates.

5 more vendors

Vendor	Country	$/g	Pack	Purity
MedKoo Biosciences, Inc	United States	$195.00	10 g	98%
Molnova	China	$696.00	500 mg	99%
Ambeed, Inc.	United States	$870.00	100 mg	98%
Cayman Europe	Estonia	$1013.88	500 mg	98%
AstaTech (2 weeks)	United States	$6140.00	50 mg	95%

Chemical Identity

CAS92134-98-0

PubChem CID56338

DTXSIDDTXSID1044271

FormulaC16H13N2Na2O6P

Mol. Weight406.24 g/mol

SMILESC1=CC=C(C=C1)C2(C(=O)N(C(=O)N2)COP(=O)([O-])[O-])C3=CC=CC=C3.[Na+].[Na+]

Data Sources

PubChem · compound 56338Retrieved 2026-04-07
FDA National Drug Code directoryRetrieved 2026-04-25
FDA National Drug Code directoryRetrieved 2026-04-07

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Brief citations

Fosphenytoin sodium (CAS 92134-98-0) https://chemicalindependence.com/chemical/92134-98-0/ PubChem: 56338. Retrieved 2026-04-07. https://pubchem.ncbi.nlm.nih.gov/compound/56338 FDA National Drug Code directory: CAS 92134-98-0. Retrieved 2026-04-25. https://open.fda.gov/data/ndc/ FDA National Drug Code directory: bulk match. Retrieved 2026-04-07. https://open.fda.gov/data/ndc/