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Heterocyclic building blocks

CI 943

Also known as 1H-Imidazo(1,2-c)pyrazolo(3,4-e)pyrimidine, 8-ethyl-7,8-dihydro-1,3,5-trimethyl-, CI-943, (A+-)-, 11-ethyl-3,5,8-trimethyl-3,4,7,9,12-pentazatricyclo[7.3.0.02,6]dodeca-1(12),2(6),4,7-tetraene

CAS 89239-35-0Formula C12H17N5Molar mass 231.30 g/mol
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CI 943 chemical structure, C12H17N5, CAS 89239-35-0
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
89239-35-0
Formula
C12H17N5
Molar mass
231.30 g/mol
HS code
293359
Category
Heterocyclic building blocks

What is CI 943?

Plain description, key identifiers and synonyms

CI 943 is a chemical substance with the molecular formula C12H17N5 and a molar mass of 231.30 g/mol. Its CAS registry number is 89239-35-0. The IUPAC name is 11-ethyl-3,5,8-trimethyl-3,4,7,9,12-pentazatricyclo[7.3.0.02,6]dodeca-1(12),2(6),4,7-tetraene.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
11-ethyl-3,5,8-trimethyl-3,4,7,9,12-pentazatricyclo[7.3.0.02,6]dodeca-1(12),2(6),4,7-tetraene
CAS number
89239-35-0 CAS number cross-checked
Molecular formula
C12H17N5
UNII
WUY06K900N
InChIKey
YFAVYALYCRERKH-UHFFFAOYSA-N
InChI
InChI=1S/C12H17N5/c1-5-9-6-17-8(3)13-10-7(2)15-16(4)11(10)12(17)14-9/h9H,5-6H2,1-4H3
SMILES (canonical and isomeric)
CCC1CN2C(=NC3=C(C2=N1)N(N=C3C)C)C

Synonyms

  • 1H-Imidazo(1,2-c)pyrazolo(3,4-e)pyrimidine, 8-ethyl-7,8-dihydro-1,3,5-trimethyl-
  • CI-943, (A+-)-
  • 11-ethyl-3,5,8-trimethyl-3,4,7,9,12-pentazatricyclo[7.3.0.02,6]dodeca-1(12),2(6),4,7-tetraene
  • 7,8-Dihydro-8-ethyl-1,3,5-trimethyl-1H-imidazo(1,2-c)pyrazolo(3,4-e)pyrimidine
  • 8-ethyl-1,3,5-trimethyl-7,8-dihydro-1H-imidazo[1,2-c]pyrazolo[3,4-e]pyrimidine
  • 1H-Imidazo(1,2-c)pyrazolo(3,4-e)pyrimidine, 7,8-dihydro-8-ethyl-1,3,5-trimethyl-
  • (+/-)-CI 943
  • CI-943, (+/-)-
  • 7-Ethyl-1,3,5-trimethyl-6,7-dihydro-1H-1,2,4,5a,8-pentaaza-as-indacene
  • 8-Ethyl-7,8-dihydro-1,3,5-trimethyl-1H-imidazo-(1,2-c)pyrazolo(3,4-e)pyrimidine

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
231.30 g/molcalc.
Exact mass
231.1484 Dacalc.
LogP (octanol/water)
1.63calc.
Topological polar surface area
45.78 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
4calc.
Rotatable bonds
1calc.
Heavy atoms
17calc.
Rings
3calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.58calc.
Formal charge
0calc.
Stereocentres
1calc.
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, C1=Nc2cn[nH]c2C2=NCCN12

C1=Nc2cn[nH]c2C2=NCCN12

3 rings, 12 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.

CI 943 suppliers

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CI 943 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 CI 943 is traded under.

HS 2933.59Indicative HS code

Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring, other

World exports in 2024
$18.4B
+10.5% vs 2023, imports $24.8B
2019 to 2024
Top exporters
  1. Ireland43.6%
  2. Switzerland * partner reported26.3%
  3. China7.9%
Top importers
  1. Slovenia30.3%
  2. United States30.1%
  3. Germany15.3%

* Partner reported figures, a lower bound.

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

The HS code shown for CI 943 is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about CI 943, based on the data on this page

What is CI 943?

CI 943 is a chemical substance with the molecular formula C12H17N5 and a molar mass of 231.30 g/mol. Its CAS registry number is 89239-35-0. The IUPAC name is 11-ethyl-3,5,8-trimethyl-3,4,7,9,12-pentazatricyclo[7.3.0.02,6]dodeca-1(12),2(6),4,7-tetraene.

What is the CAS number of CI 943?

The CAS registry number of CI 943 is 89239-35-0.

What is the molecular formula and weight of CI 943?

The molecular formula of CI 943 is C12H17N5 and its molar mass is 231.30 g/mol.

What is CI 943 used for?

Known uses and roles of CI 943 include building blocks in research and laboratory and screening compounds in research and laboratory.

Is CI 943 hazardous?

No GHS hazard classification for CI 943 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 CI 943?

CI 943 is usually classified under HS code 293359 (Compounds containing a pyrimidine ring (whether or not hydrogenated) or piperazine ring…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy CI 943?

Post a free request on CompoundList and suppliers of CI 943 will send you quotes. Your contact details stay private until you accept a quote.

What is the price of CI 943?

Suppliers quote CI 943 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 CI 943

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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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