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Isotope-labelled compounds

Pyridine-D5

Also known as (2H5)Pyridine, Pentadeuteropyridine, deuterated pyridine

CAS 7291-22-7Formula C5H5NMolar mass 84.13 g/molEC 230-720-2
GHS signal word: Danger. Pictograms: Flammable, Harmful or irritant 10 suppliers listed
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Pyridine-D5 chemical structure, C5H5N, CAS 7291-22-7
2D chemical structure

Key facts

What buyers check first

All properties
Physical form
Liquid
Boiling point
114.4 °C
Density
1.05 @25 °C
HS code
284590
Category
Isotope-labelled compounds
Illustrative photo, 25 litre white jerry cans of liquid in a warehouse
Typical packagingIllustrative packaging image, not the actual product

What is Pyridine-D5?

Plain description, key identifiers and synonyms

Pyridine-d5 is a member of pyridines, a mancude organic heteromonocyclic parent, a monocyclic heteroarene, an azaarene and a deuterated compound. It has a role as a NMR solvent.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
2,3,4,5,6-pentadeuteriopyridine
CAS number
7291-22-7 CAS number cross-checked
EC number
230-720-2
Molecular formula
C5H5N
MDL number
MFCD00044639
InChIKey
JUJWROOIHBZHMG-RALIUCGRSA-N
InChI
InChI=1S/C5H5N/c1-2-4-6-5-3-1/h1-5H/i1D,2D,3D,4D,5D
Canonical SMILES
c1ccncc1
Isomeric SMILES
[2H]C1=C(C(=NC(=C1[2H])[2H])[2H])[2H]

Synonyms

  • (2H5)Pyridine
  • Pentadeuteropyridine
  • deuterated pyridine
  • Azabenzened5
  • Azined5
  • 2,3,4,5,6-pentadeuteriopyridine
  • pyridine d5
  • Pyridine D5 >99.5%
  • Pyridine-d?
  • Pentadeuteropyridine, Perdeuteriopyridine
  • Pyridine-d5 (Reagent grade)
  • pyridine-d
  • Pyridine-D5-
  • Pyridine-2,3,4,5,6-d5, Pyridine-d5 (6CI,7CI,8CI,9CI), Pentadeuteropyridine, Perdeuteriopyridine
  • Pyridine, perdeutero-
  • (~2~H_5_)pyridine
  • Pyridine D5 >99.94%
  • Pyridine-d5, 99 atom % D
  • Pyridine-d5, >=99.5 atom % D
  • Pyridine-d5, "100%", >=99.96 atom % D
  • Pyridine-d5, 99 atom % D, contains 1 % (v/v) TMS
  • Pyridine-d5, >=99.5 atom % D, contains 0.03 % (v/v) TMS
  • Pyridine-d5, "100%", 99.96 atom % D, contains 0.03 % (v/v) TMS

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

Physical form
Liquidexp.
Boiling point
114.4 °Cexp.
Density
1.05 @25 °Cexp.

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
84.13 g/molcalc.
Exact mass
84.0736 Dacalc.
LogP (octanol/water)
1.08calc.
Topological polar surface area
12.89 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
0calc.
Heavy atoms
6calc.
Rings
1calc.
Aromatic rings
1calc.
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, c1ccncc1

c1ccncc1

1 ring, 6 atoms, the Pyridine ring system.

118,162 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS02: Flammable
Flammable
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H225Highly flammable liquid and vapour.
  • H302 + H312 + H332Harmful if swallowed. Harmful in contact with skin. Harmful if inhaled.
  • H302Harmful if swallowed.
  • H312Harmful in contact with skin.
  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H332Harmful if inhaled.
Precautionary statements (26)
  • P210Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
  • P233Keep container tightly closed.
  • P240Ground and bond container and receiving equipment.
  • P241Use explosion-proof electrical, ventilating and lighting equipment.
  • P242Use non-sparking tools.
  • P243Take action to prevent static discharges.
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P270Do not eat, drink or smoke when using this product.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P317If swallowed: Get medical help.
  • P302 + P352If on skin: Wash with plenty of water.
  • P303 + P361 + P353If on skin (or hair): Take off immediately all contaminated clothing. Rinse skin with water or shower.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P317Get medical help.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P332 + P317If skin irritation occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P370 + P378In case of fire: Use appropriate media to extinguish.
  • P403 + P235Store in a well-ventilated place. Keep cool.
  • P501Dispose of contents and container in accordance with local regulations.

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

Pyridine-D5 suppliers

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

All 10 suppliers
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Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

10 suppliers in 5 countries

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Pyridine-D5 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

Roles

  • NMR solvent
  • solvent

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 Pyridine-D5 is traded under.

HS 2845.90Indicative HS code

Compounds, inorganic or organic, of such isotopes, whether or not chemically defined

World exports in 2024
$2.67B
+19.0% vs 2023, imports $1.67B
2019 to 2024
Top exporters
  1. Ireland55.3%
  2. Hong Kong11.8%
  3. United States10.7%
Top importers
  1. China24.3%
  2. Ireland21.9%
  3. South Korea13.3%
Reported customs values in USD, not prices.Full trade data

The HS code shown for Pyridine-D5 is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Pyridine-D5, based on the data on this page

What is Pyridine-D5?

Pyridine-d5 is a member of pyridines, a mancude organic heteromonocyclic parent, a monocyclic heteroarene, an azaarene and a deuterated compound. It has a role as a NMR solvent.

What is the CAS number of Pyridine-D5?

The CAS registry number of Pyridine-D5 is 7291-22-7.

What is the molecular formula and weight of Pyridine-D5?

The molecular formula of Pyridine-D5 is C5H5N and its molar mass is 84.13 g/mol.

What is Pyridine-D5 used for?

Known uses and roles of Pyridine-D5 include isotope-labelled compounds in research and laboratory, nmr solvent and solvent.

Is Pyridine-D5 hazardous?

Pyridine-D5 carries the GHS signal word "Danger". Main hazards: highly flammable liquid and vapour, harmful if swallowed. harmful in contact with skin. harmful if inhaled, harmful if swallowed. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Pyridine-D5?

Pyridine-D5 is usually classified under HS code 284590 (Isotopes other than those of heading 2844, compounds, inorganic or organic, of such…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Pyridine-D5?

CompoundList lists 10 suppliers of Pyridine-D5 in China, Germany, United States, France and 1 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Pyridine-D5 in India?

1 supplier in India list Pyridine-D5 on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Pyridine-D5?

Suppliers quote Pyridine-D5 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 Pyridine-D5

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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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