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Screening compounds

Protostephanine

Also known as 6,7,8,9-Tetrahydro-2,3,10,12-tetramethoxy-7-methyl-5H-dibenz(d,f)azonine, 5H-Dibenz(d,f)azonine, 6,7,8,9-tetrahydro-2,3,10,12-tetramethoxy-7-methyl-, 4,5,14,16-tetramethoxy-10-methyl-10-azatricyclo[11.4.0.02,7]heptadeca-1(13),2,4,6,14,16-hexaene

CAS 549-28-0Formula C21H27NO4Molar mass 357.45 g/mol
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Protostephanine chemical structure, C21H27NO4, CAS 549-28-0
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
549-28-0
Formula
C21H27NO4
Molar mass
357.45 g/mol
HS code
293399
Category
Screening compounds

What is Protostephanine?

Plain description, key identifiers and synonyms

protostephanine has been reported in Stephania corymbosa and Stephania japonica.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
4,5,14,16-tetramethoxy-10-methyl-10-azatricyclo[11.4.0.02,7]heptadeca-1(13),2,4,6,14,16-hexaene
CAS number
549-28-0
Molecular formula
C21H27NO4
UNII
8HEL0402TN
InChIKey
GMRPVRSCPJYUDP-UHFFFAOYSA-N
InChI
InChI=1S/C21H27NO4/c1-22-8-6-14-10-20(25-4)21(26-5)13-17(14)18-11-15(23-2)12-19(24-3)16(18)7-9-22/h10-13H,6-9H2,1-5H3
SMILES (canonical and isomeric)
CN1CCC2=CC(=C(C=C2C3=C(CC1)C(=CC(=C3)OC)OC)OC)OC

Synonyms

  • 6,7,8,9-Tetrahydro-2,3,10,12-tetramethoxy-7-methyl-5H-dibenz(d,f)azonine
  • 5H-Dibenz(d,f)azonine, 6,7,8,9-tetrahydro-2,3,10,12-tetramethoxy-7-methyl-
  • 4,5,14,16-tetramethoxy-10-methyl-10-azatricyclo[11.4.0.02,7]heptadeca-1(13),2,4,6,14,16-hexaene
  • 4,5,14,16-tetramethoxy-10-methyl-10-azatricyclo(11.4.0.02,7)heptadeca-1(13),2,4,6,14,16-hexaene
  • 2,3,10,12-Tetramethoxy-7-methyl-6,7,8,9-tetrahydro-5H-dibenzo[d,f]azonine #

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
357.45 g/molcalc.
Exact mass
357.194 Dacalc.
LogP (octanol/water)
3.42calc.
Topological polar surface area
40.16 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
5calc.
Rotatable bonds
4calc.
Heavy atoms
26calc.
Rings
3calc.
Aromatic rings
2calc.
Fraction sp3 carbons
0.43calc.
Formal charge
0calc.
Stereocentres
0calc.
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, c1ccc2c(c1)CCNCCc1ccccc1-2

c1ccc2c(c1)CCNCCc1ccccc1-2

3 rings, 17 atoms.

2 other chemicals share this scaffold

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.

Protostephanine suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

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Protostephanine 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 Protostephanine is traded under.

HS 2933.99Indicative HS code

Heterocyclic compounds with nitrogen hetero-atom(s) only, other

World exports in 2024
$12.1B
−31.0% vs 2023, imports $28.8B
2019 to 2024
Top exporters
  1. China30.5%
  2. India * partner reported16.3%
  3. Ireland9.0%
Top importers
  1. Slovenia31.7%
  2. Italy24.2%
  3. United States5.0%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

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

What is Protostephanine?

protostephanine has been reported in Stephania corymbosa and Stephania japonica.

What is the CAS number of Protostephanine?

The CAS registry number of Protostephanine is 549-28-0.

What is the molecular formula and weight of Protostephanine?

The molecular formula of Protostephanine is C21H27NO4 and its molar mass is 357.45 g/mol.

What is Protostephanine used for?

Known uses and roles of Protostephanine include building blocks in research and laboratory and screening compounds in research and laboratory.

Is Protostephanine hazardous?

No GHS hazard classification for Protostephanine 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 Protostephanine?

Protostephanine is usually classified under HS code 293399 (Heterocyclic compounds with nitrogen hetero-atom(s) only, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Protostephanine?

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

What is the price of Protostephanine?

Suppliers quote Protostephanine 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 Protostephanine

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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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