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Aromatic building blocks

Siduron, trans-

Also known as trans-Siduron, Siduron trans-form, Urea, N-[(1R,2R)-2-methylcyclohexyl]-N'-phenyl-, rel-

CAS 19123-21-8Formula C14H20N2OMolar mass 232.33 g/molEC 634-970-7
GHS signal word: Warning. Pictograms: Harmful or irritant
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Siduron, trans- chemical structure, C14H20N2O, CAS 19123-21-8
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
19123-21-8
Formula
C14H20N2O
Molar mass
232.33 g/mol
EC number
634-970-7
HS code
292421
Category
Aromatic building blocks

What is Siduron, trans-?

Plain description, key identifiers and synonyms

Siduron, trans- is a chemical substance with the molecular formula C14H20N2O and a molar mass of 232.33 g/mol. Its CAS registry number is 19123-21-8. The IUPAC name is 1-[(1R,2R)-2-methylcyclohexyl]-3-phenylurea.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
1-[(1R,2R)-2-methylcyclohexyl]-3-phenylurea
CAS number
19123-21-8
EC number
634-970-7
Molecular formula
C14H20N2O
UNII
F2TC9A0FTD
MDL number
MFCD32206323
InChIKey
JXVIIQLNUPXOII-DGCLKSJQSA-N
InChI
InChI=1S/C14H20N2O/c1-11-7-5-6-10-13(11)16-14(17)15-12-8-3-2-4-9-12/h2-4,8-9,11,13H,5-7,10H2,1H3,(H2,15,16,17)/t11-,13-/m1/s1
Canonical SMILES
CC1CCCCC1NC(=O)Nc1ccccc1
Isomeric SMILES
C[C@@H]1CCCC[C@H]1NC(=O)NC2=CC=CC=C2

Synonyms

  • trans-Siduron
  • Siduron trans-form
  • Urea, N-[(1R,2R)-2-methylcyclohexyl]-N'-phenyl-, rel-
  • Urea, 1-(2-methylcyclohexyl)-3-phenyl-, trans-
  • Rel-N-((1R,2R)-2-methylcyclohexyl)-N'-phenylurea
  • rel-N-[(1R,2R)-2-Methylcyclohexyl]-N'-phenylurea
  • Urea, N-((1R,2R)-2-methylcyclohexyl)-N'-phenyl-, rel-
  • 1-[(1R,2R)-2-methylcyclohexyl]-3-phenylurea
  • 3-[(1R,2R)-2-Methylcyclohexyl]-1-phenylurea
  • trans-Siduron 10 |Ig/mL in Acetonitrile
  • trans-Siduron 10 microg/mL in Acetonitrile
  • 1-[(1R,2R)-2-methylcyclohexyl]-3-phenyl-urea
  • rel-1-((1R,2R)-2-methylcyclohexyl)-3-phenylurea

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
232.33 g/molcalc.
Exact mass
232.1576 Dacalc.
LogP (octanol/water)
3.39calc.
Topological polar surface area
41.13 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
2calc.
Heavy atoms
17calc.
Rings
2calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.5calc.
Formal charge
0calc.
Stereocentres
2calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, O=C(Nc1ccccc1)NC1CCCCC1

O=C(Nc1ccccc1)NC1CCCCC1

2 rings, 16 atoms, the N-Cyclohexyl-N'-phenylurea ring system.

212 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H315Causes skin irritation.
Precautionary statements (6)
  • P264Wash skin thoroughly after handling.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P332 + P317If skin irritation occurs: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.

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

Full safety data and first aid

Siduron, trans- suppliers

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Siduron, trans- price

Indicative price range per kg from live supplier offers

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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 Siduron, trans- is traded under.

HS 2924.21Indicative HS code

Ureines and their derivatives, salts thereof

World exports in 2024
$149M
+12.5% vs 2023, imports $208M
2019 to 2024
Top exporters
  1. Germany25.4%
  2. China14.4%
  3. Israel12.0%
Top importers
  1. Brazil28.2%
  2. United States14.0%
  3. Japan10.0%
Reported customs values in USD, not prices.Full trade data

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

Frequently asked questions

Quick answers about Siduron, trans-, based on the data on this page

What is Siduron, trans-?

Siduron, trans- is a chemical substance with the molecular formula C14H20N2O and a molar mass of 232.33 g/mol. Its CAS registry number is 19123-21-8. The IUPAC name is 1-[(1R,2R)-2-methylcyclohexyl]-3-phenylurea.

What is the CAS number of Siduron, trans-?

The CAS registry number of Siduron, trans- is 19123-21-8.

What is the molecular formula and weight of Siduron, trans-?

The molecular formula of Siduron, trans- is C14H20N2O and its molar mass is 232.33 g/mol.

What is Siduron, trans- used for?

Known uses and roles of Siduron, trans- include building blocks in research and laboratory and screening compounds in research and laboratory.

Is Siduron, trans- hazardous?

Siduron, trans- carries the GHS signal word "Warning". Main hazards: causes skin irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Siduron, trans-?

Siduron, trans- is usually classified under HS code 292421 (Ureines and their derivatives, salts thereof). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Siduron, trans-?

Post a free request on CompoundList and suppliers of Siduron, trans- will send you quotes. Your contact details stay private until you accept a quote.

What is the price of Siduron, trans-?

Suppliers quote Siduron, trans- 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 Siduron, trans-

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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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