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Aliphatic and alicyclic building blocks

Defosfamide

Also known as Desmofosfamide, Defosfamid, Mitarson

CAS 3733-81-1Formula C9H20Cl3N2O3PMolar mass 341.60 g/mol
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Defosfamide chemical structure, C9H20Cl3N2O3P, CAS 3733-81-1
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
3733-81-1
Formula
C9H20Cl3N2O3P
Molar mass
341.60 g/mol
HS code
291990
Category
Aliphatic and alicyclic building blocks

What is Defosfamide?

Plain description, key identifiers and synonyms

Defosfamide is a nitrogen mustard compound that cross-links with DNA, causing inhibition of DNA synthesis. (NCI)

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
3-[[bis(2-chloroethyl)amino-(2-chloroethoxy)phosphoryl]amino]propan-1-ol
CAS number
3733-81-1 CAS number cross-checked
Molecular formula
C9H20Cl3N2O3P
UNII
0W33021S30
InChIKey
FQWNGSKQHPNIQG-UHFFFAOYSA-N
InChI
InChI=1S/C9H20Cl3N2O3P/c10-2-6-14(7-3-11)18(16,17-9-4-12)13-5-1-8-15/h15H,1-9H2,(H,13,16)
SMILES (canonical and isomeric)
C(CNP(=O)(N(CCCl)CCCl)OCCCl)CO

Synonyms

  • Desmofosfamide
  • Defosfamid
  • Mitarson
  • Desmophosphamidum
  • Defosfamida
  • B 612-Asta
  • Defosfamidum
  • Defosfamidum (INN-Latin)
  • Defosfamida (INN-Spanish)
  • Phosphorodiamidic acid, N,N-bis(2-chloroethyl)-N'-(3-hydroxypropyl)-, (2-chloroethyl) ester
  • Desmophosphamide
  • 612-Asta
  • Trichlorethoxyphosphamide
  • 3-[[bis(2-chloroethyl)amino-(2-chloroethoxy)phosphoryl]amino]propan-1-ol
  • B 612-Asta, Defosfamid, NSC 40627, Desmofosfamide
  • N,N-Bis(2-chloroethyl)-N'-(3-hydroxypropyl)phosphorodiamidic acid 2-chloroethyl ester
  • 2-chloroethyl N,N-bis(2-chloroethyl)-N'-(3-hydroxypropyl)phosphorodiamidate
  • Phosphorodiamidic acid,N-bis(2-chloroethyl)-N'-(3-hydroxypropyl)-, 2-chloroethyl ester

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

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

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
341.60 g/molcalc.
Exact mass
340.0277 Dacalc.
LogP (octanol/water)
2.1calc.
Topological polar surface area
61.8 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
12calc.
Heavy atoms
18calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
1calc.
Formal charge
0calc.
Stereocentres
1calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

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

Defosfamide suppliers

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Defosfamide price

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Uses and applications

What the substance is used for, by industry and function

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

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

HS 2919.90Indicative HS code

Phosphoric, and their salts, including lactophosphates, their halogenated, sulphonated, nitrated…

World exports in 2024
$940M
−0.7% vs 2023, imports $863M
2019 to 2024
Top exporters
  1. China55.6%
  2. Germany10.6%
  3. Italy6.2%
Top importers
  1. United States15.8%
  2. South Korea10.1%
  3. Germany6.4%
Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

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

What is Defosfamide?

Defosfamide is a nitrogen mustard compound that cross-links with DNA, causing inhibition of DNA synthesis. (NCI)

What is the CAS number of Defosfamide?

The CAS registry number of Defosfamide is 3733-81-1.

What is the molecular formula and weight of Defosfamide?

The molecular formula of Defosfamide is C9H20Cl3N2O3P and its molar mass is 341.60 g/mol.

What is Defosfamide used for?

Known uses and roles of Defosfamide include building blocks in research and laboratory.

Is Defosfamide hazardous?

No GHS hazard classification for Defosfamide is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of Defosfamide?

Defosfamide is usually classified under HS code 291990 (Phosphoric esters and their salts, including lactophosphates, their halogenated…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Defosfamide?

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What is the price of Defosfamide?

Suppliers quote Defosfamide 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

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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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