Clearsynth is a leading innovator in pharmaceutical reference standards, offering high-quality Reference Standards for Leucine, including both pharmacopeial and non-pharmacopeial impurities, metabolites, stable isotope products, and nitrosamines (N-NO products). Our Leucine 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 Leucine-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.
Our Leucine-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.
Leucine Related Compounds
Stable Isotopes
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| (5S,5’S)-Dihydroxy Lysinonorleucine-d4 | Stable Isotopes | CS-T-103031 | 32619-23-1(Unlabelled) | Enquire |
| 4-Methyl-L-leucine-d3 | Stable Isotopes | CS-T-100027 | Not Available | Enquire |
| D-Leucine-d10 Hydrochloride | Stable Isotopes | CS-O-59131 | 271247-12-2 (Free salt) | Enquire |
| D-Norleucine-d9 | Stable Isotopes | CS-T-97256 | Not Available | Enquire |
| L-Isoleucine-[13C6] | Stable Isotopes | CS-I-00659 | 201740-82-1 | Enquire |
| L-Leucine-d10 Hydrochloride | Stable Isotopes | CS-O-59130 | 106972-44-5 (free salt) | Enquire |
| N-(Methoxycarbonyl)-L-tert-leucine-d3 | Stable Isotopes | CS-T-102637 | 920757-35-3 | Enquire |
| N-[(+)-Isojasmonoyl]-(S)-isoleucine-15N | Stable Isotopes | CS-T-96917 | Not Available | Enquire |
| N-Boc-L-tert-leucine-D9 | Stable Isotopes | CS-O-34759 | 1158083-37-4 | Enquire |
| N-Fmoc-L-isoleucine-d10 | Stable Isotopes | CS-T-96958 | Not Available | Enquire |
| N-Formyl-L-leucine (3S,4S,6S)-3-Hexyltetrahydro-2-oxo-6-unde... | Stable Isotopes | CS-T-96951 | Not Available | Enquire |
| N-Formyl-L-leucine(1S)-1-[(2S,3S)-2-hydroxy-3-[(R)-1-phenyle... | Stable Isotopes | CS-T-97495 | Not Available | Enquire |
| N-Jasmonyl-L-Isoleucine-d3 (Mixture of Diastereomers) | Stable Isotopes | CS-T-96912 | Not Available | Enquire |
| N-tert-Butylcarbamoyl-L-tert-leucine-d9 | Stable Isotopes | CS-T-101761 | Not Available | Enquire |
| N-tert-Butylcarbamoyl-L-tert-leucine-d9 Benzyl Ester | Stable Isotopes | CS-T-101760 | 1795786-80-9 | Enquire |
API
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| Fructose-leucine | API | CS-T-55091 | 34393-18-5 | Enquire |
Impurity
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| (2R,3R)-3-Hydroxynorleucine | Impurity | CS-T-78832 | 59286-26-9 | In Stock |
| 5-Methyl-L-norleucine Orlistat Analogue | Impurity | CS-T-34294 | 1356847-30-7 | Enquire |
| 6-Oxo DL-Norleucine, Formate Salt | Impurity | CS-O-57880 | 2125941-25-3 | Enquire |
| Alpha-Keto-isoleucine | Impurity | CS-O-14092 | 66393-67-7 | In Stock |
| Des-N-(methoxycarbonyl)-L-tert-leucine Atazanavir Trihydroch... | Impurity | CS-EC-00092 | 198904-87-9 | Enquire |
| D-Isoleucine | Impurity | CS-T-29755 | 319-78-8 | Enquire |
| Fmoc-D-Arg(Pbf)-OH | Impurity | CS-U-00012 | 187618-60-6 | In Stock |
| Fmoc-His(Trt)-OH | Impurity | CS-U-00022 | 109425-51-6 | In Stock |
| Fmoc-L-Glu(OtBu)-OH | Impurity | CS-U-00038 | 71989-18-9 | In Stock |
| Fmoc-valine | Impurity | CS-T-24604 | 68858-20-8 | Enquire |
| Isoleucine Valsartan | Impurity | CS-T-29809 | 137862-78-3 | In Stock |
| L-Allo-isoleucine | Impurity | CS-T-64972 | 1509-34-8 | In Stock |
| L-Leucine-ß-naphthylamide | Impurity | CS-T-30974 | 732-85-4 | Enquire |
| L-Norleucine | Impurity | CS-T-37561 | 327-57-1 | In Stock |
| N-ACETYL-DL-ISOLEUCINE | Impurity | CS-O-51687 | 2460646-17-5 | Enquire |
| N-Boc-D-leucine | Impurity | CS-T-07600 | 16937-99-8 | Enquire |
| N-Formyl-L-leucine (3S,4S,6S)-3-Hexyltetrahydro-2-oxo-6-unde... | Impurity | CS-T-74607 | 130676-65-2 | Enquire |
| Ritonavir Isoleucine Analog | Impurity | CS-EO-00619 | Not Available | Enquire |
Intermediate
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| Fmoc-D-Pro-OH | Intermediate | CS-BH-00006 | 101555-62-8 | In Stock |
| Fmoc-O-tert-Butyl-D-serine | Intermediate | CS-M-57251 | 128107-47-1 | In Stock |
| L-Leucine Methyl Ester Hydrochloride | Intermediate | CS-O-10821 | 7517-19-3 | In Stock |
| N-methoxycarbonyl-tert-leucine | Intermediate | CS-O-32197 | 162537-11-3 | In Stock |
Fine Chemicals
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| 4-Hydroxy-L-isoleucine | Fine Chemicals | CS-M-03320 | 781658-23-9 | In Stock |
| 5-Methyl-L-norleucine | Fine Chemicals | CS-T-34696 | 31872-98-7 | In Stock |
| Dl-alpha-keto isoleucine calcium | Fine Chemicals | CS-O-14818 | 51828-96-7 | In Stock |
| D-tert-Leucine | Fine Chemicals | CS-BW-00065 | 26782-71-8 | In Stock |
| Isoleucine methyl ester | Fine Chemicals | CS-BL-00101 | 2577-46-0 | Enquire |
| L-tert-Leucine | Fine Chemicals | CS-BW-00066 | 20859-02-3 | In Stock |
Nitrosamine
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| N-Nitroso Leucine Impurity | Nitrosamine | CS-EO-02604 | 78814-91-2 | Enquire |
| N-Nitroso-N-Methyl-D-Leucine | Nitrosamine | CS-O-52605 | Not Available | In Stock |
Peptide
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| Angiotensin I, 5-L-isoleucine | Peptide | CS-O-48116 | 484-42-4 | Enquire |
| Fmoc-Beta-Ala-L-isoleu-OH | Peptide | CS-O-46361 | 2171270-66-7 | Enquire |
| Fmoc-Beta-Ala-L-Val-OH | Peptide | CS-O-46362 | 2171152-91-1 | Enquire |
| Fmoc-D-Ile-OH | Peptide | CS-T-24561 | 143688-83-9 | Enquire |
| Leucine enkephalin | Peptide | CS-O-57999 | 58822-25-6 | Enquire |
| N-Acetyl-DL-leucine | Peptide | CS-CE-00649 | 99-15-0 | In Stock |
Stable Isotope Reagent
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| (DL)-tert-D9-Leucine | Stable Isotope Reagent | CS-O-45787 | Not Available | Enquire |
| D-Leucine-1-13C | Stable Isotope Reagent | CS-T-103472 | 82152-60-1 | Enquire |
| Fmoc-[d10]Leu-OH | Stable Isotope Reagent | CS-CH-00119 | 1190594-22-9 | 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 |
| D-Isoleucine Methyl Ester Hydrochloride | Building Blocks | CS-TB-75569 | 167223-42-9 | Enquire |
| D-N-Methylleucine | Building Blocks | CS-O-52052 | 31321-74-1 | Enquire |
| Fmoc-D-Tic-OH | Building Blocks | CS-T-77477 | 130309-33-0 | In Stock |
| Fmoc-L-2-thienylalanine | Building Blocks | CS-T-75428 | 130309-35-2 | In Stock |
| Fmoc-ß -alanine | Building Blocks | CS-M-30089 | 35737-10-1 | Enquire |
| L-Isoleucine | Building Blocks | CS-O-30624 | 73-32-5 | In Stock |
| L-Photo-leucine | Building Blocks | CS-O-57448 | 851960-91-3 | Enquire |
| N-(Methoxycarbonyl)-D-tert-leucine | Building Blocks | CS-T-102290 | 1191091-65-2 | Enquire |
| N-Acetyl-L-leucine | Building Blocks | CS-M-10436 | 1188-21-2 | In Stock |
| N-Cbz-L-leucine | Building Blocks | CS-T-10682 | 2018-66-8 | Enquire |
| N-Formyl-L-leucine | Building Blocks | CS-M-35592 | 6113-61-7 | In Stock |
Deuterated Reagents
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| L-Leucine-d10 | Deuterated Reagents | CS-C-00491 | 106972-44-5 | In Stock |