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Steroids and sterols

Sts 267

Also known as Sts-267, Estra-1,3,5(10)-trien-17-one, 16-azido-3-methoxy-, (16alpha)-, 16-Azido-3-methoxyestra-1,3,5(10)-trien-17-one

CAS 51946-38-4Formula C19H23N3O2Molar mass 325.41 g/mol
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Sts 267 chemical structure, C19H23N3O2, CAS 51946-38-4
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
51946-38-4
Formula
C19H23N3O2
Molar mass
325.41 g/mol
HS code
291450
Category
Steroids and sterols

What is Sts 267?

Plain description, key identifiers and synonyms

Sts 267 is a chemical substance with the molecular formula C19H23N3O2 and a molar mass of 325.41 g/mol. Its CAS registry number is 51946-38-4. The IUPAC name is (8R,9S,13S,14S,16R)-16-azido-3-methoxy-13-methyl-7,8,9,11,12,14,15,16-octahydro-6H-cyclopenta[a]phenanthren-17-one.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(8R,9S,13S,14S,16R)-16-azido-3-methoxy-13-methyl-7,8,9,11,12,14,15,16-octahydro-6H-cyclopenta[a]phenanthren-17-one
CAS number
51946-38-4 CAS number cross-checked
Molecular formula
C19H23N3O2
InChIKey
CHIQFWSFQDADKY-ILYVXUQDSA-N
InChI
InChI=1S/C19H23N3O2/c1-19-8-7-14-13-6-4-12(24-2)9-11(13)3-5-15(14)16(19)10-17(18(19)23)21-22-20/h4,6,9,14-17H,3,5,7-8,10H2,1-2H3/t14-,15-,16+,17-,19+/m1/s1
Canonical SMILES
COc1ccc2c(c1)CCC1C2CCC2(C)C(=O)C(N=[N+]=[N-])CC12
Isomeric SMILES
C[C@]12CC[C@H]3[C@H]([C@@H]1C[C@H](C2=O)N=[N+]=[N-])CCC4=C3C=CC(=C4)OC

Synonyms

  • Sts-267
  • Estra-1,3,5(10)-trien-17-one, 16-azido-3-methoxy-, (16alpha)-
  • 16-Azido-3-methoxyestra-1,3,5(10)-trien-17-one
  • (8R,9S,13S,14S,16R)-16-azido-3-methoxy-13-methyl-7,8,9,11,12,14,15,16-octahydro-6H-cyclopenta[a]phenanthren-17-one
  • 16-Azido-3-methoxyestra-1(10),2,4-trien-17-one
  • 16alpha-Azido-3-methoxyestra-1(10),2,4-trien-17-one
  • 16alpha-Azido-3-methoxy-estra-1,3,5(10)-triene-17-one

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
325.41 g/molcalc.
Exact mass
325.179 Dacalc.
LogP (octanol/water)
4.41calc.
Topological polar surface area
75.06 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
2calc.
Heavy atoms
24calc.
Rings
4calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.63calc.
Formal charge
0calc.
Stereocentres
5calc.
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=C1CCC2C1CCC1c3ccccc3CCC12

O=C1CCC2C1CCC1c3ccccc3CCC12

4 rings, 18 atoms.

176 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.

Sts 267 suppliers

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Sts 267 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

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 Sts 267 is traded under.

HS 2914.50Indicative HS code

Ketone-phenols and ketones with other oxygen function

World exports in 2024
$438M
+10.9% vs 2023, imports $420M
2019 to 2024
Top exporters
  1. China50.5%
  2. India * partner reported11.6%
  3. United States11.3%
Top importers
  1. United States20.8%
  2. Germany10.0%
  3. Netherlands8.6%

* Partner reported figures, a lower bound.

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

The HS code shown for Sts 267 is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Sts 267, based on the data on this page

What is Sts 267?

Sts 267 is a chemical substance with the molecular formula C19H23N3O2 and a molar mass of 325.41 g/mol. Its CAS registry number is 51946-38-4. The IUPAC name is (8R,9S,13S,14S,16R)-16-azido-3-methoxy-13-methyl-7,8,9,11,12,14,15,16-octahydro-6H-cyclopenta[a]phenanthren-17-one.

What is the CAS number of Sts 267?

The CAS registry number of Sts 267 is 51946-38-4.

What is the molecular formula and weight of Sts 267?

The molecular formula of Sts 267 is C19H23N3O2 and its molar mass is 325.41 g/mol.

Is Sts 267 hazardous?

No GHS hazard classification for Sts 267 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 Sts 267?

Sts 267 is usually classified under HS code 291450 (Ketone-phenols and ketones with other oxygen function). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Sts 267?

Post a free request on CompoundList and suppliers of Sts 267 will send you quotes. Your contact details stay private until you accept a quote.

What is the price of Sts 267?

Suppliers quote Sts 267 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 Sts 267

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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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