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Heterocyclic building blocks

Krm-iii

Also known as 1,4-diphenyl-1,3-dihydro-2H-imidazole-2-thione, 1,3-Dihydro-1,4-diphenyl-2H-imidazole-2-thione, 1,4-diphenyl-2,3-dihydro-1H-imidazole-2-thione

CAS 79220-94-3Formula C15H12N2SMolar mass 252.34 g/molEC 663-859-6
GHS signal word: Warning. Pictograms: Harmful or irritant 1 supplier listed
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Krm-iii chemical structure, C15H12N2S, CAS 79220-94-3
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
79220-94-3
Formula
C15H12N2S
Molar mass
252.34 g/mol
EC number
663-859-6
HS code
293329
Category
Heterocyclic building blocks

What is Krm-iii?

Plain description, key identifiers and synonyms

Krm-iii is a chemical substance with the molecular formula C15H12N2S and a molar mass of 252.34 g/mol. Its CAS registry number is 79220-94-3. The IUPAC name is 3,5-diphenyl-1H-imidazole-2-thione.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
3,5-diphenyl-1H-imidazole-2-thione
CAS number
79220-94-3 CAS number cross-checked
EC number
663-859-6
Molecular formula
C15H12N2S
InChIKey
QKOAQVKXZJFMET-UHFFFAOYSA-N
InChI
InChI=1S/C15H12N2S/c18-15-16-14(12-7-3-1-4-8-12)11-17(15)13-9-5-2-6-10-13/h1-11H,(H,16,18)
SMILES (canonical and isomeric)
C1=CC=C(C=C1)C2=CN(C(=S)N2)C3=CC=CC=C3

Synonyms

  • 1,4-diphenyl-1,3-dihydro-2H-imidazole-2-thione
  • 1,3-Dihydro-1,4-diphenyl-2H-imidazole-2-thione
  • 1,4-diphenyl-2,3-dihydro-1H-imidazole-2-thione
  • 3,5-diphenyl-1H-imidazole-2-thione
  • KRM-III, >=98% (HPLC)

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
252.34 g/molcalc.
Exact mass
252.0721 Dacalc.
LogP (octanol/water)
4.2calc.
Topological polar surface area
20.72 Ųcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
2calc.
Heavy atoms
18calc.
Rings
3calc.
Aromatic rings
3calc.
Fraction sp3 carbons
0calc.
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, S=c1[nH]c(-c2ccccc2)cn1-c1ccccc1

S=c1[nH]c(-c2ccccc2)cn1-c1ccccc1

3 rings, 18 atoms. This chemical is the scaffold itself.

45 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

  • H319Causes serious eye irritation.
Precautionary statements (4)
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P337 + P317If eye irritation persists: Get medical help.

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

Krm-iii suppliers

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

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  • ChemDiv Inc.
    United States, San DiegoUnclaimed profile
    Krm-iiiGrade, purity and minimum order on request
    Price on request
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Where suppliers are based

1 supplier in 1 country

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Krm-iii 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 Krm-iii is traded under.

HS 2933.29Indicative HS code

Compounds containing an unfused imidazole ring (whether or not hydrogenated) in the…

World exports in 2024
$1.43B
−7.6% vs 2023, imports $1.47B
2019 to 2024
Top exporters
  1. China28.1%
  2. France * partner reported12.7%
  3. India * partner reported10.3%
Top importers
  1. United Kingdom13.0%
  2. United States7.9%
  3. China6.5%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

Quick answers about Krm-iii, based on the data on this page

What is Krm-iii?

Krm-iii is a chemical substance with the molecular formula C15H12N2S and a molar mass of 252.34 g/mol. Its CAS registry number is 79220-94-3. The IUPAC name is 3,5-diphenyl-1H-imidazole-2-thione.

What is the CAS number of Krm-iii?

The CAS registry number of Krm-iii is 79220-94-3.

What is the molecular formula and weight of Krm-iii?

The molecular formula of Krm-iii is C15H12N2S and its molar mass is 252.34 g/mol.

What is Krm-iii used for?

Known uses and roles of Krm-iii include building blocks in research and laboratory and screening compounds in research and laboratory.

Is Krm-iii hazardous?

Krm-iii carries the GHS signal word "Warning". Main hazards: causes serious eye irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Krm-iii?

Krm-iii is usually classified under HS code 293329 (Compounds containing an unfused imidazole ring (whether or not hydrogenated) in the…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Krm-iii?

CompoundList lists 1 supplier of Krm-iii in 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 Krm-iii?

Suppliers quote Krm-iii 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

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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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