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Impurities and reference standards

D-Histidine

Also known as (R)-2-Amino-3-(1H-imidazol-4-yl)propanoic acid, D-Histidin, (2R)-2-amino-3-(1H-imidazol-4-yl)propanoic acid

CAS 351-50-8Formula C6H9N3O2Molar mass 155.16 g/molEC 206-513-8
GHS signal word: Warning. Pictograms: Harmful or irritant 14 suppliers listed
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D-Histidine chemical structure, C6H9N3O2, CAS 351-50-8
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
351-50-8
Formula
C6H9N3O2
Molar mass
155.16 g/mol
EC number
206-513-8
HS code
293329
Category
Impurities and reference standards

What is D-Histidine?

Plain description, key identifiers and synonyms

D-histidine is an optically active form of histidine having D-configuration. It has a role as a Saccharomyces cerevisiae metabolite. It is a D-alpha-amino acid and a histidine. It is a conjugate base of a D-histidinium(1+). It is a conjugate acid of a D-histidinate(1-). It is an enantiomer of a L-histidine. It is a tautomer of a D-histidine zwitterion.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(2R)-2-amino-3-(1H-imidazol-5-yl)propanoic acid
CAS number
351-50-8 CAS number cross-checked
EC number
206-513-8
Molecular formula
C6H9N3O2
UNII
4JE5HRM5CH
MDL number
MFCD00065963
InChIKey
HNDVDQJCIGZPNO-RXMQYKEDSA-N
InChI
InChI=1S/C6H9N3O2/c7-5(6(10)11)1-4-2-8-3-9-4/h2-3,5H,1,7H2,(H,8,9)(H,10,11)/t5-/m1/s1
Canonical SMILES
NC(Cc1cnc[nH]1)C(=O)O
Isomeric SMILES
C1=C(NC=N1)C[C@H](C(=O)O)N

Synonyms

  • (R)-2-Amino-3-(1H-imidazol-4-yl)propanoic acid
  • D-Histidin
  • (2R)-2-amino-3-(1H-imidazol-4-yl)propanoic acid
  • (2R)-2-amino-3-(1H-imidazol-5-yl)propanoic acid
  • D-Histamine
  • (r)-histidine
  • Histidine, d-
  • (R)-alpha-Amino-1H-imidazole-4-propionic acid
  • (2R)-2-azaniumyl-3-(1H-imidazol-5-yl)propanoate
  • (2R)-2-amino-3-(1H-imidazol-4-yl)propanoic acid, D-histidine
  • H-D-His-OH
  • D-His
  • Polaprezinc Impurity 4
  • (R)-2-Amino-3-(4-imidazolyl)propionic acid
  • (2R)-2-ammonio-3-(1H-imidazol-4-yl)propanoate
  • (R)-2-Amino-3-(4-imidazolyl)propanoic acid
  • copper-histidine
  • D-Hls-OH
  • 2ez7
  • NIOSH/MS3116000
  • Histidine, monohydrochloride, D-
  • D-Histidine, >=98% (TLC)
  • D-Histidine, puriss., >=99.0% (T)
  • D-a-Amino-ss-(4-imidazolyl)propionic acid
  • D-Histidine, Vetec(TM) reagent grade, 98%
Show all 26 synonyms
  • (2R)-2-amino-3-(3H-imidazol-4-yl)propanoic acid

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
155.16 g/molcalc.
Exact mass
155.0695 Dacalc.
LogP (octanol/water)
-0.64calc.
Topological polar surface area
92 Ųcalc.
Hydrogen bond donors
3calc.
Hydrogen bond acceptors
3calc.
Rotatable bonds
3calc.
Heavy atoms
11calc.
Rings
1calc.
Aromatic rings
1calc.
Fraction sp3 carbons
0.33calc.
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, c1c[nH]cn1

c1c[nH]cn1

1 ring, 5 atoms, the Imidazole ring system.

14,448 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

  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H335May cause respiratory irritation.
Precautionary statements (16)
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P302 + P352If on skin: Wash with plenty of water.
  • 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.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • 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.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P405Store locked up.
  • 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

D-Histidine suppliers

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

All 14 suppliers
14 of 14 offers

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

14 suppliers in 4 countries

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D-Histidine price

Indicative price range per kg from live supplier offers

No published prices right now

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Uses and applications

What the substance is used for, by industry and function

Roles

  • Saccharomyces cerevisiae metabolite
  • eukaryotic metabolite
  • fungal metabolite
  • metabolite

Regulatory status

Inventories, regulations and trade controls that list this substance

United States

  • TSCA inventory (USA)
    Status: Inactive in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code D-Histidine 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 D-Histidine is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about D-Histidine, based on the data on this page

What is D-Histidine?

D-histidine is an optically active form of histidine having D-configuration. It has a role as a Saccharomyces cerevisiae metabolite. It is a D-alpha-amino acid and a histidine. It is a conjugate base of a D-histidinium(1+). It is a conjugate acid of a D-histidinate(1-). It is an enantiomer of a L-histidine.

What is the CAS number of D-Histidine?

The CAS registry number of D-Histidine is 351-50-8.

What is the molecular formula and weight of D-Histidine?

The molecular formula of D-Histidine is C6H9N3O2 and its molar mass is 155.16 g/mol.

What is D-Histidine used for?

Known uses and roles of D-Histidine include saccharomyces cerevisiae metabolite, eukaryotic metabolite, fungal metabolite and metabolite.

Is D-Histidine hazardous?

D-Histidine carries the GHS signal word "Warning". Main hazards: causes skin irritation, causes serious eye irritation, may cause respiratory irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of D-Histidine?

D-Histidine 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 D-Histidine?

CompoundList lists 14 suppliers of D-Histidine in China, United States, Hong Kong and India. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy D-Histidine in India?

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

What is the price of D-Histidine?

Suppliers quote D-Histidine 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 D-Histidine

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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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