Clearsynth is a leading innovator in pharmaceutical reference standards, offering high-quality Reference Standards for Fluorescein, including both pharmacopeial and non-pharmacopeial impurities, metabolites, stable isotope products, and nitrosamines (N-NO products). Our Fluorescein 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 Fluorescein-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 Fluorescein-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.
Fluorescein Related Compounds
API
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| Fluorescein Sodium | API | CS-T-74595 | 518-47-8 | In Stock |
| Dibenzylfluorescein | API | CS-T-88199 | 97744-44-0 | Enquire |
| Fluorescein | API | CS-T-54762 | 2321-07-5 | Enquire |
| Fluorescein Biotin | API | CS-T-77664 | 134759-22-1 | Enquire |
| Fluorescein Dibutyrate | API | CS-T-75167 | 7298-65-9 | Enquire |
| Fluoresceinamine | API | CS-T-75581 | 27599-63-9 | Enquire |
| Fluorescein-dUTP | API | CS-T-75707 | 214154-36-6 | Enquire |
Impurity
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| Fluorescein Monoacetate | Impurity | CS-O-47455 | 7262-41-1 | Enquire |
| O-Mono Acetyl Fluorescein | Impurity | CS-EO-03267 | 1104-16-1 | Enquire |
| Phthalic Acid | Impurity | CS-T-39867 | 88-99-3 | In Stock |
| (L)-2-[(t-Boc)amino]-2-[(5-Fluoresceinyl)aminocarbonyl]ethyl... | Impurity | CS-T-49482 | 1042688-20-9 | Enquire |
| 2-[(5-Fluoresceinyl)aminocarbonyl]ethyl Methanethiosulfonate | Impurity | CS-T-54789 | 351330-42-2 | Enquire |
| 5(6)-Carboxy-2,7-dichlorofluorescein diacetate N-succinimidy... | Impurity | CS-T-50316 | 147265-60-9 | Enquire |
| 5(6)-Carboxyfluorescein Diisobutyrate | Impurity | CS-T-50331 | 287111-44-8 | Enquire |
| 5(6)-Nitrofluorescein | Impurity | CS-DL-00620 | 78512-32-0 | Enquire |
| 6-(Fluorescein-5-carboxamido)hexanoic Acid Succinimidyl Este... | Impurity | CS-T-54769 | 148356-00-7 | Enquire |
| 6-[Fluorescein-5(6)-carboxamido]hexanoic acid N-hydroxysucci... | Impurity | CS-T-77174 | 114616-31-8 | Enquire |
| 6-Carboxy-2,7-dichlorofluorescein 3,6-Diacetate Succinimidyl... | Impurity | CS-T-50314 | 852299-81-1 | Enquire |
| 6-Carboxyfluorescein 3',6'-Dipivaloyl N-(1-Methylethyl)-2-pr... | Impurity | CS-T-50335 | 847569-43-1 | Enquire |
| Diacetylfluorescein | Impurity | CS-T-52382 | 596-09-8 | Enquire |
| Fluorescein 5-Isothiocyanate, Isomer 1 | Impurity | CS-T-23806 | 3326-32-7 | Enquire |
| Fluorescein 5-Maleimide | Impurity | CS-T-54771 | 75350-46-8 | Enquire |
| Fluorescein 6-Isothiocyanate, Isomer 2 | Impurity | CS-T-23807 | 18861-78-4 | Enquire |
| Fluorescein 6-Maleimide | Impurity | CS-T-54775 | 161598-40-9 | Enquire |
| Fluorescein Alkynylamino-ATP | Impurity | CS-T-54763 | 185971-89-5 | Enquire |
| Fluorescein-5-iodoacetamide | Impurity | CS-DL-00736 | 63368-54-7 | Enquire |
| Fluoresceinamine Hydrochloride Isomer 1 | Impurity | CS-T-54765 | 53360-53-5 | Enquire |
| Fluoresceinamine, Isomer 1 | Impurity | CS-T-54764 | 3326-34-9 | Enquire |
| Fluoresceinamine, Isomer 2, | Impurity | CS-T-54766 | 51649-83-3 | Enquire |
| Fluorescein-Cadaverine Dihydrobromide | Impurity | CS-T-54768 | 786705-84-8 | Enquire |
| Fluorescein-O’-acetic Acid | Impurity | CS-T-75810 | 233759-98-3 | Enquire |
| N-(5-Fluoresceinyl)-L-carnitine-O-thiocarbamate | Impurity | CS-T-54790 | 1258239-73-4 | Enquire |
Intermediate
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| 2-(2,4-Dihydroxy-3,5-diiodobenzoyl)benzoic acid | Intermediate | CS-BX-02729 | 3480-21-5 | In Stock |
Glucuronide
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| Fluorescein Glucuronide | Glucuronide | CS-B-00279 | 74804-84-5 | Enquire |
Fine Chemicals
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| 2,4,5-TRIIODOFLUORESCEIN | Fine Chemicals | CS-O-34358 | 56254-06-9 | Enquire |
| 2,4,7-TRIIODOFLUORESCEIN | Fine Chemicals | CS-O-34359 | 83498-90-2 | Enquire |
| 2-MONOIODOFLUORESCEIN,DISODIUM SALT | Fine Chemicals | CS-O-34360 | 52010-85-2 | Enquire |
| 4-MONOIODOFLUORESCEIN,DISODIUM SALT | Fine Chemicals | CS-O-34361 | 52010-86-3 | Enquire |
| 5-(N-Dodecanoyl)aminofluorescein | Fine Chemicals | CS-ZH-37470 | 107827-77-0 | Enquire |
| Biotin-4-Fluorescein | Fine Chemicals | CS-T-49125 | 1032732-74-3 | Enquire |
Polymers
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| Poly(fluorescein O-methacrylate) | Polymers | CS-PM-00083 | Not Available | Enquire |
| Poly(styrene–co–fluorescein O-methacrylate), random | Polymers | CS-PM-00752 | Not Available | Enquire |
Biochemicals
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| Fluorescein Sodium Salt (C.I. No. 45350) for cell culture, E... | Biochemicals | CS-SR-00496 | 518-47-8 | Enquire |
Building Blocks
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| Fluorescein O-methacrylate | Building Blocks | CS-PM-01721 | 480439-15-4 | Enquire |
Dyes
| COMPOUND | CATEGORY | CAT. No. | CAS. No. | STOCK STATUS |
|---|---|---|---|---|
| 4,5,6,7-Tetrachloro-2′,4′,5′,7′-tetrabromofluorescein | Dyes | CS-BL-00029 | 13473-26-2 | Enquire |