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Alpha-tocopherol acetate is the esterified, stabilized form of vitamin E, a fat-soluble antioxidant essential for human health. It is the most biologically active form of vitamin E and is commonly used in oral supplements and topical preparations. The acetate ester protects the active tocopherol from oxidation during storage and is hydrolyzed to free alpha-tocopherol following absorption. Applications: It is indicated for the treatment and prevention of vitamin e deficiency resulting from malabsorption syndromes such as cystic fibrosis, chronic cholestasis, and short bowel syndrome. it is also used as a nutritional supplement in patients with abetalipoproteinemia, where it helps prevent the progressive neurologic deterioration associated with this disorder. topical formulations are employed for their moisturizing and antioxidant properties in cosmetic and dermatologic applications. Category: Vitamin apis. Synonyms: Alfacol; Ecofrol; Contopheron; Tofaxin; Tocopherol acetate; Combinal E; Tokoferol acetate; (2R,4'R,8'R)-alpha-Tocopheryl acetate; 9E8X80D2L0; [(2R)-2,5,7,8-tetramethyl-2-[(4R,8R)-4,8,12-trimethyltridecyl]-3,4-dihydrochromen-6-yl] acetate. CAS No. 7695-91-2. Product ID: API0231523. Molecular formula: C31H52O3. Mole weight: 472.7. EINECS: 231-710-0. InChIKey: ZAKOWWREFLAJOT-CEFNRUSXSA-N. Appearance: Light yellow oily liquid.
alpha-Tocopherol ethano-dimer
One of the impurities of Vitamin E, which has been found to exhibit antioxidant activity. Synonyms: 5,5'-ethylenebis(2,7,8-trimethyl-2-(4,8,12-trimethyltridecyl)-, (+)-; 5,5'-Ethylenebis[2-(4,8,12-trimethyltridecyl)-2,7,8-trimethyl-3,4-dihydro-2H-1-benzopyran-6-ol]. CAS No. 2896-55-1. Molecular formula: C58H98O4. Mole weight: 859.39.
One of the impurities of Vitamin E, which has been found to exhibit antioxidant activity. Synonyms: 2-(3-hydroxy-3,7,11,15-tetramethylhexadecyl)-3,5,6-trimethylbenzoquinol; 2-(3-hydroxy-3,7,11,15-tetramethylhexadecyl)-3,5,6-trimethyl-. CAS No. 14745-36-9. Molecular formula: C29H52O3. Mole weight: 448.72.
alpha-Tocopherol spiro-dimer
One of the impurities of Vitamin E, which has been found to exhibit antioxidant activity. CAS No. 1604-73-5. Molecular formula: C58H96O4. Mole weight: 857.38.
ALPHA TOCOPHERYL ACETATE (VITAMIN E ACETATE) USP(CRM STANDARD)
ALPHA TOCOPHERYL ACETATE (VITAMIN E ACETATE) USP(CRM STANDARD). Product ID: ACMA00009476. Alfa Chemistry - ISO 9001:32057 Certified.
Alpha-Tocopheryl Glucoside
One of the impurities of Vitamin E, which has been found to exhibit antioxidant activity. Synonyms: Tocopheryl Glucoside; alpha-Tocopherol glucoside; (2R)-3,4-Dihydro-2,5,7,8-tetramethyl-2-((4R,8R)-4,8,12-trimethyltridecyl)-2H-1-benzopyran-6-yl beta-D-glucopyranoside. CAS No. 104832-72-6. Molecular formula: C35H60O7. Mole weight: 592.84.
ALPHA-(TRICHLOROMETHYL)-4-PYRIDINEETHANOL
ALPHA-(TRICHLOROMETHYL)-4-PYRIDINEETHANOL. Alternative Names: PETCM;APOPTOSIS ACTIVATOR I;ALPHA-(TRICHLOROMETHYL)-4-PYRIDINEETHANOL;1-(4-PYRIDYL)-2-HYDROXY-3,3,3-TRICHLOROPROPANE;1,1,1-TRICHLORO-3-(4-PYRIDYL)PROPAN-2-OL;a-(Trichloromethyl)-4-pyridineethanol;α-(Trichloromethyl)-4-pyridineethanol, 1-(4-Pyridyl)-2-hy. CAS No. 10129-56-3. Purity: >99 %. Product ID: ACM10129563. Molecular formula: C8H8Cl3NO. Mole weight: 240.51. Alfa Chemistry - ISO 9001:32057 Certified.
ALPHA-TRIDECYL-OMEGA-HYDROXY-POLY(OXY-1,2-ETHANEDIYL)PHOSPHATE. Product ID: ACMA00004212. Alfa Chemistry - ISO 9001:32057 Certified.
ALPHA-TRIETHYLAMINOMETHYL ACETATE CHLORIDE
ALPHA-TRIETHYLAMINOMETHYL ACETATE CHLORIDE. Alternative Names: ALPHA-TRIETHYLAMINOMETHYL ACETATE CHLORIDE. CAS No. 19223-70-2. Purity: 96%. Product ID: ACM19223702-1. Molecular formula: C9H20ClNO2. IUPAC Name: triethyl-(2-methoxy-2-oxoethyl)azanium;chloride. Alfa Chemistry - ISO 9001:32057 Certified.
Alphaxalone
Alphaxalone. Group: Biochemicals. Grades: Purified. CAS No. 23930-19-0. Pack Sizes: 10mg, 50mg. US Biological Life Sciences.
Worldwide
alpha-Zearalanol-[d5]
Alpha-Zearalanol-[d5] is a labelled impurity of Zearalenol. Zearalenol, a resorcylic acid lactones derivative, could be produced by Fusarium fungi in grains and has been found to be an environmental contaminant. Synonyms: Zeranol-D5; (7S,11R)-2,4,11-Trihydroxy-7-methyl-7,8,9,10,11,12,13,14,15,16-decahydro-10,10,11,12,12-D5-6-oxa-benzocyclotetradecen-5-one. Grade: 95% by HPLC; 98% atom D. Molecular formula: C18H21D5O5. Mole weight: 327.43.
alpha-Zearalenol-[d5]
α-Zearalenol-[d5] is a labelled impurity of Zearalenol. Zearalenol, a resorcylic acid lactones derivative, could be produced by Fusarium fungi in grains and has been found to be an environmental contaminant. Synonyms: α-Zearalenol-d5; (E)-(7S,11R)-2,4,11-Trihydroxy-7-methyl-7,8,9,10,11,12,13,14-octahydro-10,10,11,12,12-D5-6-oxa-benzocyclotetradecen-5-one; (-)-α-Zearalenol-d5; Zearalenol-d5; trans-Zearalenol-d5; (3S,7R,11E)-3,4,5,6,7,8,9,10-Octahydro-7,14,16-trihydroxy-3-methyl-1H-2-benzoxacyclotetradecin-1-one-d5. Grade: 95% by HPLC; 98% atom D. CAS No. 36455-72-8. Molecular formula: C18H19D5O5. Mole weight: 325.41.
Alphazurine A (Acid Blue 7)
25g Pack Size. Group: Analytical Reagents, Stains & Indicators. Formula: C37H35N2NaO6S2. CAS No. 3486-30-4. Prepack ID 90005052-25g. Molecular Weight 690.80337. See USA prepack pricing.
Alphitonin
Alphitonin is a metabolite related to flavonoids, which is isolated from the heartwood of Australian red ash. Alphitonin has anti-diabetic and anti-oxidant effects. Grade: >95% by HPLC. CAS No. 493-36-7. Molecular formula: C15H12O7. Mole weight: 304.25.
Alphostatin
BMG59-R2 is a peptide antibiotic produced by Bacillus megaterium BNG59-R2. It can inhibit the activity of alkaline phosphatase and also has anti-tumor activity. Synonyms: L-Glutamic acid, N-(N(sup 2)-(N-(N-L-isoleucyl-L-isoleucyl)-O-phosphono-L-seryl)-L-glutaminyl)-, hydrate; BMG59-R2. Grade: >98%. CAS No. 90119-88-3. Molecular formula: C25H45N6O13P. Mole weight: 668.63.
Alpidem
Alpidem, an anxiolytic agent, is an orally active and brain-penetrant GABAA receptor ligand, binds to α1β2γ2 subunit-containing GABAA receptors (IC50 of 17 nM) over α5β2γ2 subunit-containing GABAA receptors (IC50 of >10 μM). Alpidem modulates calcium-induced mitochondrial permeability transition, induces glutathione depletion and hepatocyte necrosis, potentiates TNF-α toxicity, inhibits marble-burying and locomotor activity, enhances stressed rodent feeding behavior, and exerts anticonvulsant effects. Alpidem can be used for the research of anxiety, anxiety disorders, and convulsions[1][2][3][4][5][6][7][8][9][10][11]. Uses: Scientific research. Category: Signaling pathways. CAS No. 82626-01-5. Pack Sizes: 10 mM * 1 mL in DMSO; 1 mg; 5 mg; 10 mg; 25 mg; 50 mg. Product ID: HY-W013150.
Alpidem
A peripheral benzodiazepine GABAA receptor ligand, a new anxiolytic. Group: Biochemicals. Alternative Names: 6-Chloro-2-(4-chlorophenyl)-N,N-dipropyl-imidazo[1,2-a]pyridine-3-acetamide; SL 80.0342-00. Grades: Highly Purified. CAS No. 82626-01-5. Pack Sizes: 5mg. US Biological Life Sciences.
Worldwide
Alpidem-d14
A labeled peripheral benzodiazepine GABAA receptor ligand, a new anxiolytic. Group: Biochemicals. Alternative Names: 6-Chloro-2-(4-chlorophenyl)-N,N-(dipropyl-14)-imidazo[1,2-a]pyridine-3-acetamide; SL 80.0342-00-d14. Grades: Highly Purified. Pack Sizes: 1mg. US Biological Life Sciences.
Worldwide
Alpinetin
Alpinetin. Group: Biochemicals. Alternative Names: 7-Hydroxy-5-methoxyflavanone. Grades: Plant Grade. CAS No. 36052-37-6. Pack Sizes: 20mg. Molecular Formula: C16H14O4, Molecular Weight: 270.28. US Biological Life Sciences.
Worldwide
Alpinetin
Alpinetin isolated from the fruits of Alpinia katsumadai. It has strong anti-hepatoma and pancreatic cancer cells effects, by inhibiting proliferation. Uses: Antibacterial activity; anti-inflammatory activity. Synonyms: 4H-1-Benzopyran-4-one, 2,3-dihydro-7-hydroxy-5-methoxy-2-phenyl-, (2S)-; (2S)-2,3-Dihydro-7-hydroxy-5-methoxy-2-phenyl-4H-1-benzopyran-4-one; 4H-1-Benzopyran-4-one, 2,3-dihydro-7-hydroxy-5-methoxy-2-phenyl-, (S)-; Flavanone, 7-hydroxy-5-methoxy-; (-)-Alpinetin; (S)-7-Hydroxy-5-methoxy-2-phenylchroman-4-one; 5-Methoxy-7-hydroxyflavanone; 5-O-Methylpinocembrin. Grade: ≥95%. CAS No. 36052-37-6. Molecular formula: C16H14O4. Mole weight: 270.28.
Alpinia galanga oil. Alternative Names: Alpinia galanga (L.) Willd. CAS No. 84625-26-3. Purity: 100% Pure and Natural. Product ID: FFC-AR-84625263. Alfa Chemistry - ISO 9001:32057 Certified.
Alpinumisoflavone
Alpinumisoflavone isolated from the herbs of Genista pichisermolliana. It maybe due to their ability to upregulate mechanisms promoting HDL-cholesterol and bile acid formation, Alpinumisoflavone has atheroprotective effects. Uses: Atheroprotective effects. Synonyms: 5-Hydroxy-7-(4-hydroxyphenyl)-2,2-dimethyl-2H,6H-benzo[1,2-b:5,4-b']dipyran-6-one. Grade: 0.985. CAS No. 34086-50-5. Molecular formula: C20H16O5. Mole weight: 336.3.
Alpitatug
Alpitatug (IMC 3C5) is a CHO-expressed human antibody that targets KLK2/Kallikrein 2. Alpitatug has a huIgG1 heavy chain and a huκ light chain, with a predicted molecular weight (MW) of 145.3 kDa. The isotype control for Alpitatug can be referenced as Human IgG1 kappa, Isotype Control (HY-P99001). Uses: Scientific research. Category: Signaling pathways. Alternative Names: IMC 3C5; JNJ-69086420 antibody; Anti-KLK2 Antibody (h11B6). CAS No. 2921676-05-1. Pack Sizes: 1 mg; 5 mg; 10 mg. Product ID: HY-P990608.
Alprazolam-d5 solution
Alprazolam-d5 solution. Uses: For analytical and research use. CAS No. 125229-61-0. Mole weight: 313.80. EC Number: 200-659-6. Catalog: AP125229610.
Alprazolam EP impurity A
Alprazolam EP impurity A. Uses: For analytical and research use. CAS No. 27537-87-7. Molecular formula: C15H14ClN3O. Mole weight: 287.75. Catalog: APB27537877.
Alprazolam EP impurity B
Alprazolam EP impurity B. Uses: For analytical and research use. CAS No. 38150-27-5. Molecular formula: C17H14ClN3O2. Mole weight: 327.77. Catalog: APB38150275.
Alprazolam EP impurity C
Alprazolam EP impurity C. Uses: For analytical and research use. CAS No. 36916-19-5. Molecular formula: C16H12ClN3O. Mole weight: 297.74. Catalog: APB36916195.
Alprazolam EP impurity F
Alprazolam EP impurity F. Uses: For analytical and research use. CAS No. 37945-07-6. Molecular formula: C17H13Cl2N3O. Mole weight: 346.21. Catalog: APB37945076.
Alprazolam EP impurity G
Alprazolam EP impurity G. Uses: For analytical and research use. CAS No. 448950-89-8. Molecular formula: C17H13ClN4. Mole weight: 308.77. Catalog: APB448950898.
Alprazolam USP impurity D
Alprazolam USP impurity D. Uses: For analytical and research use. Molecular formula: C18H13ClN4. Mole weight: 320.78. Catalog: APB11202.
Alprazolam USP impurity H
Alprazolam USP impurity H. Uses: For analytical and research use. Molecular formula: C34H28Cl2N7O2. Mole weight: 637.55. Catalog: APB11203.
Alprazolam USP impurity I
Alprazolam USP impurity I. Uses: For analytical and research use. Molecular formula: C34H27Cl2N7O2. Mole weight: 636.54. Catalog: APB11204.
Alprenolol ((RS)-Alprenolol; dl-Alprenolol) is an orally active non-selective β-adrenoceptor antagonist and an antagonist of 5-HT1A and 5-HT1B receptors. Alprenolol is used as an anti-hypertensive, anti-anginal and anti-arrhythmic agent[1][2][3]. Uses: Scientific research. Category: Signaling pathways. Alternative Names: (RS)-Alprenolol; dl-Alprenolol. CAS No. 13655-52-2. Pack Sizes: 50 mg; 100 mg. Product ID: HY-B1517.
Alprenolol hydrochloride
Alprenolol ((RS)-Alprenolol; dl-Alprenolol) hydrochloride is an orally active non-selective β-adrenoceptor antagonist and an antagonist of 5-HT1A and 5-HT1B receptors. Alprenolol hydrochloride is used as an anti-hypertensive, anti-anginal and anti-arrhythmic agent[1][2][3]. Uses: Scientific research. Category: Signaling pathways. Alternative Names: (RS)-Alprenolol hydrochloride; dl-Alprenolol hydrochloride. CAS No. 13707-88-5. Pack Sizes: 10 mM * 1 mL in DMSO; 50 mg; 100 mg; 200 mg; 500 mg. Product ID: HY-B1517A.
Alprenolol hydrochloride
Alprenolol hydrochloride is the hydrochloride salt of alprenolol, which is a non-selective 5-HT1A receptor antagonist and beta blocker. It is used in the treatment of angina pectoris. It is no longer marketed by AstraZeneca, but may still be available from other pharmaceutical companies or generically. Uses: Adrenergic beta-antagonists. Synonyms: 1-[(1-Methylethyl)amino]-3-[2-(2-propen-1-yl)phenoxy]-2-propanol Hydrochloride; 1-(o-Allylphenoxy)-3-(isopropylamino)-2-Propanol Hydrochloride; 1-[(1-Methylethyl)amino]-3-[2-(2-propenyl)phenoxy]-2-propanol Hydrochloride; (±)-1-(o-Allylphenoxy)-3-isopropylamino-2-propanol Hydrochloride; (±)-Alprenolol Hydrochloride; 1-(2-Allylphenoxy)-2-hydroxy-3-isopropylaminopropane Hydrochloride; Alfeprol; DL-1-(o-Allylphenoxy)-3-isopropylamino-2-propanol Hydrochloride; Dimacor; Gubernal; dl-Alprenolol Chloride. Grade: ≥99% by HPLC. CAS No. 13707-88-5. Molecular formula: C15H24NO2Cl. Mole weight: 285.81.
Alprostadil. Group: Biochemicals. Grades: Purified. CAS No. 745-65-3. Pack Sizes: 10mg, 50mg. US Biological Life Sciences.
Worldwide
Alprostadil alfadex
Alprostadil alfadex has a protective effect on radiation-induced proliferative inhibition and apoptosis in keratinocytes and healing of radiation-induced skin injury. Synonyms: Prost-13-en-1-oic acid, 11,15-dihydroxy-9-oxo-, (11α,13E,15S)-, compd. with α-cyclodextrin (1:1); 2,4,7,9,12,14,17,19,22,24,27,29-Dodecaoxaheptacyclo[26.2.2.23,6.28,11.213,16.218,21.223,26]dotetracontane, α-cyclodextrin deriv.; α-Cyclodextrin, compd. with (11α,13E,15S)-11,15-dihydroxy-9-oxoprost-13-en-1-oic acid (1:1); G 511; PGE1 α-CD; PGE1-α-cyclodextrin inclusion compd.; Prostaglandin E1-α-cyclodextrin compd.; Prostaglandin E1-α-cyclodextrin inclusion compd.; Tandetoron. Grade: ≥95%. CAS No. 55648-20-9. Molecular formula: C36H60O30.C20H34O5. Mole weight: 1327.32.
Alprostadil EP Impurity H
Alprostadil EP Impurity H. Uses: For analytical and research use. CAS No. 36150-00-2. Molecular formula: C20H32O5. Mole weight: 352.48. Catalog: APB36150002.
Alprostadil Impurity 2
Alprostadil Impurity 2. Uses: For analytical and research use. CAS No. 71431-28-2. Molecular formula: C20H30O4. Mole weight: 334.456. Catalog: APB71431282.
Alprostadil Liposome
Alprostadil is a natural prostaglandin, which is important in regulating cellular functions, with effects such as dilating vascular smooth muscle and inhibiting platelet aggregation. This product is a PEGylated pre-formulated liposome with alprostadil. It is only for research purposes and for the injection to laboratory animals. Group: Drug-loaded liposome.
Alprostadil (Prostaglandin E1) EP Impurity A
Alprostadil (Prostaglandin E1) EP Impurity A. Uses: For analytical and research use. CAS No. 14152-28-4. Molecular formula: C20H32O4. Mole weight: 336.47. Catalog: APB14152284.
Alprostadil (Prostaglandin E1) EP Impurity B
Alprostadil (Prostaglandin E1) EP Impurity B. Uses: For analytical and research use. CAS No. 13345-51-2. Molecular formula: C20H32O4. Mole weight: 336.47. Catalog: APB13345512.
Alprostadil (Prostaglandin E1) EP Impurity G (Prostaglandin E2)
Alprostadil (Prostaglandin E1) EP Impurity G (Prostaglandin E2). Uses: For analytical and research use. CAS No. 363-24-6. Molecular formula: C20H32O5. Mole weight: 352.47. Catalog: APB363246.
Alprostadil (Prostaglandin E1) EP Impurity I
Alprostadil (Prostaglandin E1) EP Impurity I. Uses: For analytical and research use. CAS No. 35900-16-4. Molecular formula: C22H38O5. Mole weight: 382.54. Catalog: APB35900164.
Alprostadil (Prostaglandin E1) Impurity10
Alprostadil (Prostaglandin E1) Impurity10. Uses: For analytical and research use. CAS No. 41692-11-9. Molecular formula: C21H36O5. Mole weight: 368.51. Catalog: APB41692119.
Alprostadil (Prostaglandin E1) Impurity11
Alprostadil (Prostaglandin E1) Impurity11. Uses: For analytical and research use. Molecular formula: C20H32O5. Mole weight: 352.47. Catalog: APB03150.
Alprostadil (Prostaglandin E1) Impurity 12 (PGE0)
Alprostadil (Prostaglandin E1) Impurity 12 (PGE0). Uses: For analytical and research use. CAS No. 19313-28-1. Molecular formula: C20H36O5. Mole weight: 356.5. Catalog: APB19313281.
Alprostadil (Prostaglandin E1) Impurity 14
Alprostadil (Prostaglandin E1) Impurity 14. Uses: For analytical and research use. CAS No. 26441-05-4. Molecular formula: C20H30O5. Mole weight: 350.46. Catalog: APB26441054.
Alprostadil (Prostaglandin E1) Impurity 22 (Limatoprost-α-cyclodextrin). Uses: For analytical and research use. Alternative Names: (E)-7-((1S,2R)-3-hydroxy-2-((3S,5S,E)-3-hydroxy-5-methylnon-1-en-1-yl)-5-oxocyclopent-3-en-1-yl)hept-2-enoic acid. Molecular formula: C22H34O5. Mole weight: 378.50. Catalog: APB03148.
Alprostadil (Prostaglandin E1) Impurity 8
Alprostadil (Prostaglandin E1) Impurity 8. Uses: For analytical and research use. CAS No. 217182-28-0. Molecular formula: C23H40O5. Mole weight: 396.57. Catalog: APB217182280.
Alprostadil (Prostaglandin E1) Impurity9
Alprostadil (Prostaglandin E1) Impurity9. Uses: For analytical and research use. Molecular formula: C20H32O5. Mole weight: 352.47. Catalog: APB03151.
Alrefimotide
Alrefimotide is an immunological agent for active immunization. Synonyms: telomerase reverse transcriptase (human TERT, hTERT, EC:2.7.7.49) (660-689)-peptide; L-alanyl-L-leucyl-L-phenylalanyl-L-seryl-L-valyl-L-leucyl-L-asparaginyl-L-tyrosyl-L-α-glutamyl-L-arginyl-L-alanyl-L-arginyl-L-arginyl-L-prolylglycyl-L-leucyl-L-leucylglycyl-L-alanyl-L-seryl-L-valyl-L-leucylglycyl-L-leucyl-L-α-aspartyl-L-α-aspartyl-L-isoleucyl-L-histidyl-L-arginyl-L-alanine; Telomerase reverse transcriptase 660-689 peptide antigen. CAS No. 1331848-79-3. Molecular formula: C146H239N45O41. Mole weight: 3280.78.
Alrestatin
Alrestatin. Group: Biochemicals. Grades: Purified. CAS No. 51411-04-2. Pack Sizes: 10mg, 50mg. US Biological Life Sciences.
Worldwide
Alrestatin
Alrestatin is an inhibitor of aldose reductase (IC50 = 148 μM). Uses: Specific inhibitor of aldose reductase. Synonyms: Alrestatine; 2-(1,3-dioxobenzo[de]isoquinolin-2-yl)acetic acid. Grade: ≥98%. CAS No. 51411-04-2. Molecular formula: C14H9NO4. Mole weight: 255.23.
Alrestatin (sodium)
Alrestatin sodium is a specific inhibitor of aldose reductase (IC50 = 148 μM). Uses: A specific inhibitor of aldose reductase. Synonyms: Sodium; 2-(1,3-dioxobenzo[de]isoquinolin-2-yl)acetate. Grade: ≥98%. CAS No. 51876-97-2. Molecular formula: C14H8NNaO4. Mole weight: 277.21.
a-L-Rhamnopyranosyl bromide triacetate
a-L-Rhamnopyranosyl bromide triacetate is a comprehensive compound with extraordinary antiviral potency, used for research of a wide range of viral infections, including the formidable influenza and herpes. Synonyms: (2S,3R,4R,5S,6S)-2-Bromo-6-methyltetrahydro-2H-pyran-3,4,5-triyl triacetate; 2,3,4-tri-O-acetyl-alpha-L-rhamnopyranosyl bromide. Grade: 97%. CAS No. 5158-64-5. Molecular formula: C12H17BrO7. Mole weight: 353.16.
a-L-Rhamnopyranosyl bromide tribenzoate
a-L-Rhamnopyranosyl bromide tribenzoate is an intriguing chemical compound famed for its antimicrobial capabilities, garnering considerable research in the fight against diverse infectious diseases arising from both bacterial and fungal sources. Synonyms: 2,3,4-Tri-O-benzoyl-a-L-rhamnopyranosyl bromide. CAS No. 53297-33-9. Molecular formula: C27H23BrO7. Mole weight: 539.4.