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Clearsynth is a leading innovator in pharmaceutical reference standards, offering high-quality Reference Standards for Isoleucine, including both pharmacopeial and non-pharmacopeial impurities, metabolites, stable isotope products, and nitrosamines (N-NO products). Our Isoleucine impurity reference standards are invaluable for pharmaceutical research, supporting product development, ANDA and DMF submissions, quality control (QC), method validation, and stability studies. They also aid in identifying unknown impurities and assessing genotoxic potential.
Our Isoleucine-related products undergo thorough characterization and are supplied with detailed Certificates of Analysis (COA) and analytical data that meet regulatory requirements. All supplied products are re-tested at regular intervals to ensure ongoing quality and compliance.

Isoleucine Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
L-Isoleucine-[13C6] Stable Isotopes CS-I-00659 201740-82-1 Enquire
N-[(+)-Isojasmonoyl]-(S)-isoleucine-15N Stable Isotopes CS-T-96917 Not Available Enquire
N-Fmoc-L-isoleucine-d10 Stable Isotopes CS-T-96958 Not Available Enquire
N-Jasmonyl-L-Isoleucine-d3 (Mixture of Diastereomers) Stable Isotopes CS-T-96912 Not Available Enquire
L-ALLO-ISOLEUCINE 13C6, 15N Stable Isotopes CS-R-00030 1509-34-8(Unlabeled) Enquire
L-ISOLEUCINE 13C6 Stable Isotopes CS-R-00408 201740-82-1 Enquire
L-Isoleucine-d10 Stable Isotopes CS-T-93783 73-32-5 (Unlabelled) Enquire


API

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
DL-Isoleucine API CS-DK-00008 443-79-8 Enquire
Fructose-isoleucine API CS-T-55101 87304-79-8 Enquire


Metabolite

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
DL-Methioninehydroxyanalog calcium Metabolite CS-P-07240 4857-44-7 In Stock


Impurity

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Alpha-Keto-isoleucine Impurity CS-O-14092 66393-67-7 Enquire
Isoleucine Valsartan Impurity CS-T-29809 137862-78-3 In Stock
L-Allo-isoleucine Impurity CS-T-64972 1509-34-8 In Stock
N-ACETYL-DL-ISOLEUCINE Impurity CS-O-51687 2460646-17-5 Enquire
D-Isoleucine Impurity CS-T-29755 319-78-8 Enquire
L-Isoleucine tert-Butyl Ester Hydrochloride Impurity CS-T-29753 69320-89-4 Enquire
N-Boc-D-isoleucine Impurity CS-T-07641 55721-65-8 Enquire
Ritonavir Isoleucine Analog Impurity CS-EO-00619 Not Available Enquire


Fine Chemicals

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
4-Hydroxy-L-isoleucine Fine Chemicals CS-M-03320 781658-23-9 In Stock
Calcium 2-Oxo-3-Phenylpropanoate Fine Chemicals CS-MM-11967 51828-93-4 In Stock
Calcium 3-Methyl-2-Oxopentanoate Fine Chemicals CS-MM-12331 66872-75-1 In Stock
Dl-alpha-keto isoleucine calcium Fine Chemicals CS-O-14818 51828-96-7 In Stock
Isoleucine methyl ester Fine Chemicals CS-BL-00101 2577-46-0 Enquire
N-[(Benzyloxy)carbonyl]-L-alanine Fine Chemicals CS-M-47040 1142-20-7 In Stock


Secondary Standards

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Ketoisoleucine sodium salt Secondary Standards CS-SS-26525-100MG 3715-31-9 Enquire
L-Isoleucine Secondary Standards CS-SS-24145-1GM 73-32-5 Enquire


Stable Isotope Reagent

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Isoleucine-d10 (mixture of diastereomers) Stable Isotope Reagent CS-C-01380 29909-02-2 Enquire
L-Allo-isoleucine-d10 Stable Isotope Reagent CS-T-64865 202529-06-4 Enquire
L-Isoleucine-13C6,15N Stable Isotope Reagent CS-CH-00102 202468-35-7 Enquire
L-Isoleucine-15N Stable Isotope Reagent CS-CH-00103 59935-30-7 Enquire
L-Isoleucine-15N, N-Fmoc Stable Isotope Reagent CS-CH-00104 204633-89-6 Enquire
L-Isoleucine-2-d1 Stable Isotope Reagent CS-C-00274 127290-60-2 Enquire
L-Isoleucine-OH-13C6, 15N, Fmoc Stable Isotope Reagent CS-CH-00105 1217442-29-9 Enquire


Peptide

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Angiotensin I, 5-L-isoleucine Peptide CS-O-48116 484-42-4 Enquire


Biochemicals

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
L-Isoleucine for cell culture, 99%, Endotoxin (BET) 1EU/mg Biochemicals CS-SR-00511 73-32-5 Enquire


Building Blocks

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
D-Isoleucine benzyl ester 4-toluenesulfonate salt Building Blocks CS-O-58227 80174-45-4 Enquire
L-Isoleucine Building Blocks CS-O-30624 73-32-5 In Stock
D-Isoleucine Methyl Ester Hydrochloride Building Blocks CS-TB-75569 167223-42-9 Enquire
Fmoc-l-beta-homoisoleucine Building Blocks CS-T-77828 193954-27-7 Enquire
N-Cbz-D-isoleucine Building Blocks CS-T-71099 28862-89-7 Enquire
N-Cbz-L-isoleucine Building Blocks CS-T-10677 3160-59-6 Enquire
N-Glycyl-l-isoleucine Building Blocks CS-T-78596 19461-38-2 Enquire