Paclitaxel

Paclitaxel, a potent disruptor of microtubules derived from the bark of the Pacific yew tree, is widely used as a chemotherapeutic compound. Tested against a panel of cervical (HeLa), lung (A549), breast (MCF-7), colon (HT-29), ovarian (OVG-1), and pancreatic (PC-Sh) carcinomas, paclitaxel demonstrates IC50 values ranging from 2.5-7.5 nM. Paclitaxel disrupts multipolar spindle formation, inducing cell cycle arrest in various human cell cancer lines (IC50s = 6.7-18.5 nM) at both prophase and G1. It initiates apoptosis of cancer cells through multiple mechanisms involving p53-dependent and -independent pathways, Bcl-2 family members, cyclin-dependent kinases, and c-Jun N-terminal kinases/stress-activated protein kinases.Formal Name: betaS-(benzoylamino)-alphaR-hydroxy-benzenepropanoic acid, (2aR,4S,4aS,6R,9S,11S,12S,12aR,12bS)-6,12b-bis(acetyloxy)-12-(benzoyloxy)-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-4,11-dihydroxy-4a,8,13,13-tetramethyl-5-oxo-7,11-methano-1H-cyclodeca[3,4]benz[1,2-b]oxet-9-yl ester. CAS Number: 33069-62-4. Synonyms: NSC 125973. Molecular Formula: C47H51NO14. Formula Weight: 853.9. Purity: >98%. Formulation: (Request formulation change), A crystalline solid. Solubility: DMF: 5 mg/ml, DMSO: 5 mg/ml, DMSO:PBS (pH 7.2) (1:10): 0.1 mg/ml, Ethanol: 1.5 mg/ml. lambdamax: 228 nm. SMILES: O=C([C@H](OC(C)=O)C1=C(C)[C@@H](OC([C@H](O)[C@@H](NC(C2=CC=CC=C2)=O)C3=CC=CC=C3)=O)C[C@]([C@H]4OC(C5=CC=CC=C5)=O)(O)C1(C)C)[C@@]6(C)[C@@]4([H])[C@@]7(OC(C)=O)[C@H](OC7)C[C@@H]6O. InChi Code: InChI=1S/C47H51NO14/c1-25-31(60-43(56)36(52)35(28-16-10-7-11-17-28)48-41(54)29-18-12-8-13-19-29)23-47(57)40(61-42(55)30-20-14-9-15-21-30)38-45(6,32(51)22-33-46(38,24-58-33)62-27(3)50)39(53)37(59-26(2)49)34(25)44(47,4)5/h7-21,31-33,35-38,40,51-52,57H,. InChi Key: RCINICONZNJXQF-MZXODVADSA-N.