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Amino acids and derivatives

nor-NOHA

Also known as N-Hydroxy-nor-L-arginine, N-Hydroxy-nor-arginine, Nomega-hydroxy-nor-L-arginine

CAS 189302-40-7Formula C5H12N4O3Molar mass 176.18 g/mol
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nor-NOHA chemical structure, C5H12N4O3, CAS 189302-40-7
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
189302-40-7
Formula
C5H12N4O3
Molar mass
176.18 g/mol
HS code
292800
Category
Amino acids and derivatives

What is nor-NOHA?

Plain description, key identifiers and synonyms

Nomega-hydroxy-nor-l-arginine is a L-alpha-amino acid.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(2S)-2-amino-4-[[amino-(hydroxyamino)methylidene]amino]butanoic acid
CAS number
189302-40-7Other or deprecated CAS: 291758-32-2
Molecular formula
C5H12N4O3
UNII
U0F1149OFR
MDL number
MFCD01318777
InChIKey
KOBHCUDVWOTEKO-VKHMYHEASA-N
InChI
InChI=1S/C5H12N4O3/c6-3(4(10)11)1-2-8-5(7)9-12/h3,12H,1-2,6H2,(H,10,11)(H3,7,8,9)/t3-/m0/s1
Canonical SMILES
NC(=NCCC(N)C(=O)O)NO
Isomeric SMILES
C(CN=C(N)NO)[C@@H](C(=O)O)N

Synonyms

  • N-Hydroxy-nor-L-arginine
  • N-Hydroxy-nor-arginine
  • Nomega-hydroxy-nor-L-arginine
  • N.omega.-hydroxy-nor-l-arginine
  • (2S)-2-Amino-4-(((hydroxyamino)iminomethyl)amino)butanoic acid
  • Butanoic acid, 2-amino-4-(((hydroxyamino)iminomethyl)amino)-, (S)-
  • (2S)-2-amino-4-(N'-hydroxycarbamimidamido)butanoic acid
  • (2S)-2-amino-4-[(E)-2-hydroxycarbamimidamido]butanoic acid
  • (2S)-2-amino-4-((E)-2-hydroxycarbamimidamido)butanoic acid
  • N-omega-Hydroxy-L-norarginine
  • nor-N-omega-Hydroxy-l-arginine
  • (2S)-2-amino-4-[[amino-(hydroxyamino)methylidene]amino]butanoic acid
  • NNH
  • (2S)-4-[[Amino-(hydroxyamino)methylidene]amino]-2-azaniumylbutanoate
  • L-2-Amino-4-2(2'-Hydroxylguanido)butyric Acid
  • N?-Hydroxy-nor-L-Arginine Dihydrochloride
  • (s)-2-amino-4-(3-hydroxyguanidino)butanoic acid
  • N-omega-Hydroxy-nor-l-arginine, diacetate salt
  • nor-NOHA, L-2-Amino-4-(2'-hydroxyguanidino)-butyric acid, H-Nar(OH)-OH
  • N-w-Hydroxy-L-norarginine acetate
  • HSCI1_000281
  • N--Hydroxy-L-norarginine acetate salt
  • (2S)-2-amino-4-[[amino-(hydroxyamino)methylene]amino]butanoic acid
  • (2S)-2-Amino-4-{(E)-[amino(hydroxyamino)methylidene]amino}butanoic acid

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
176.18 g/molcalc.
Exact mass
176.0909 Dacalc.
LogP (octanol/water)
-1.92calc.
Topological polar surface area
134 Ųcalc.
Hydrogen bond donors
5calc.
Hydrogen bond acceptors
4calc.
Rotatable bonds
4calc.
Heavy atoms
12calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
0.6calc.
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.

nor-NOHA suppliers

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All 2 suppliers

Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

2 suppliers in 2 countries

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nor-NOHA price

Indicative price range per kg from live supplier offers

No published prices right now

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Uses and applications

What the substance is used for, by industry and function

Applications are not documented for this substance yet. Suppliers often describe uses on their product pages, linked in the suppliers list above.

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 nor-NOHA is traded under.

HS 2928.00Indicative HS code

Organic derivatives of hydrazine or of hydroxylamine

World exports in 2024
$1.38B
−9.0% vs 2023, imports $1.52B
2019 to 2024
Top exporters
  1. Switzerland * partner reported44.0%
  2. China18.4%
  3. Italy9.4%
Top importers
  1. Brazil21.8%
  2. United States12.8%
  3. Italy10.8%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for nor-NOHA is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about nor-NOHA, based on the data on this page

What is nor-NOHA?

Nomega-hydroxy-nor-l-arginine is a L-alpha-amino acid.

What is the CAS number of nor-NOHA?

The CAS registry number of nor-NOHA is 189302-40-7. Other or deprecated CAS numbers: 291758-32-2.

What is the molecular formula and weight of nor-NOHA?

The molecular formula of nor-NOHA is C5H12N4O3 and its molar mass is 176.18 g/mol.

Is nor-NOHA hazardous?

No GHS hazard classification for nor-NOHA 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 nor-NOHA?

nor-NOHA is usually classified under HS code 292800 (Organic derivatives of hydrazine or of hydroxylamine). This is indicative, confirm it with your customs broker before shipping.

Where can I buy nor-NOHA?

CompoundList lists 2 suppliers of nor-NOHA in China and United States. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of nor-NOHA?

Suppliers quote nor-NOHA 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

Practical guides that help when you source, ship or handle nor-NOHA

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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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