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Key Documents

PHR1099

Supelco

L-Isoleucine

Pharmaceutical Secondary Standard; Certified Reference Material

Synonym(s):

(2S,3S)-2-Amino-3-methylpentanoic acid

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About This Item

Linear Formula:
C2H5CH(CH3)CH(NH2)CO2H
CAS Number:
Molecular Weight:
131.17
Beilstein/REAXYS Number:
1721792
EC Number:
MDL number:
UNSPSC Code:
41116107
eCl@ss:
32160406
PubChem Substance ID:
NACRES:
NA.24

$199.50

List Price$210.00Save 5%
Web-Only Promotion

Estimated to ship onJune 20, 2025Details


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grade

certified reference material
pharmaceutical secondary standard

Quality Level

agency

traceable to Ph. Eur. I0460000
traceable to USP 1349502

API family

leucine

CofA

current certificate can be downloaded

technique(s)

HPLC: suitable
gas chromatography (GC): suitable

mp

288 °C (dec.) (lit.)

application(s)

pharmaceutical (small molecule)

format

neat

storage temp.

2-8°C

SMILES string

CC[C@H](C)[C@H](N)C(O)=O

InChI

1S/C6H13NO2/c1-3-4(2)5(7)6(8)9/h4-5H,3,7H2,1-2H3,(H,8,9)/t4-,5-/m0/s1

InChI key

AGPKZVBTJJNPAG-WHFBIAKZSA-N

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1 of 4

This Item
1349502I0460000I7403
technique(s)

HPLC: suitable, gas chromatography (GC): suitable

technique(s)

-

technique(s)

-

technique(s)

cell culture | mammalian: suitable

application(s)

pharmaceutical (small molecule)

application(s)

pharmaceutical (small molecule)

application(s)

pharmaceutical (small molecule)

application(s)

peptide synthesis
pharmaceutical (small molecule)

format

neat

format

neat

format

neat

format

-

Quality Level

300

Quality Level

-

Quality Level

-

Quality Level

300

grade

certified reference material, pharmaceutical secondary standard

grade

pharmaceutical primary standard

grade

pharmaceutical primary standard

grade

-

storage temp.

2-8°C

storage temp.

2-8°C

storage temp.

2-8°C

storage temp.

-

General description

L-Isoleucine is an isomer of L-leucine and an essential amino acid. It is synthesized from threonine and is a branched-chain hydrophobic amino acid.
Pharmaceutical secondary standards for application in quality control, provide pharma laboratories and manufacturers with a convenient and cost-effective alternative to the preparation of in-house working standards.

Application

L-Isoleucine may be used as a pharmaceutical reference standard for the quantification of the analyte in pharmaceutical formulations using high-performance liquid chromatography technique.[1]
These Secondary Standards are qualified as Certified Reference Materials. These are suitable for use in several analytical applications including but not limited to pharma release testing, pharma method development for qualitative and quantitative analyses, food and beverage quality control testing, and other calibration requirements.

Analysis Note

These secondary standards offer multi-traceability to the USP, EP (PhEur) and BP primary standards, where they are available.

Other Notes

This Certified Reference Material (CRM) is produced and certified in accordance with ISO 17034 and ISO/IEC 17025. All information regarding the use of this CRM can be found on the certificate of analysis.

Footnote

To see an example of a Certificate of Analysis for this material enter LRAA7132 in the slot below. This is an example certificate only and may not be the lot that you receive.

Recommended products

Find a digital Reference Material for this product available on our online platform ChemisTwin® for NMR. You can use this digital equivalent on ChemisTwin® for your sample identity confirmation and compound quantification (with digital external standard). An NMR spectrum of this substance can be viewed and an online comparison against your sample can be performed with a few mouseclicks. Learn more here and start your free trial.

Storage Class

11 - Combustible Solids

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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