
Peptidi
Sottocategorie di "Peptidi"
Trovati 29598 prodotti di "Peptidi"
[Phe1376]-Fibronectin Fragment (1371-1382)
Catalogue peptide; min. 95% purity
Formula:C63H103N25O19Peso molecolare:1,514.68 g/molRef: 3D-VAC-00679
Prodotto fuori produzioneRef: 3D-VAC-00798
Prodotto fuori produzioneBCIP dipotassium
CAS:BCIP (5-bromo-4-chloro-3-indolyl phosphate) dipotassium is a chromogenic substrate commonly used for the detection of the enzymatic activity of alkaline phosphatase. Upon dephosphorylation by alkaline phosphatase, BCIP produces a blue precipitate, which can be easily visualized. This substrate has various uses, including the detection of gene expression in molecular biology, the identification of alkaline phosphatase activity in clinical pathology, and the detection of protein-protein interactions in biochemistry. Its long-term stability in solution makes it a common choice for many applications.
Formula:C8H4BrClK2NO4PPurezza:Min. 98 Area-%Colore e forma:PowderPeso molecolare:402.65 g/molRef: 3D-EB110885
Prodotto fuori produzioneMARCKS Substrate (151-175)
Catalogue peptide; min. 95% purity
Formula:C147H246N41O40P3Peso molecolare:3,320.78 g/molRef: 3D-VAC-00525
Prodotto fuori produzionebeta-Amyloid (7-22)
Catalogue peptide; min. 95% purity
Formula:C88H124N22O26Peso molecolare:2,466 g/molRef: 3D-VAC-00350
Prodotto fuori produzioneRef: 3D-VAC-00032
Prodotto fuori produzioneCrustacean Erythrophore Concentrating Hormone
Catalogue peptide; min. 95% purity
Formula:C45H59N11O11Peso molecolare:930.04 g/molRef: 3D-VAC-00190
Prodotto fuori produzioneRef: 3D-VAC-00673
Prodotto fuori produzioneRef: 3D-VAC-00358
Prodotto fuori produzionePACAP-27 (6-27) (human, chicken, mouse, ovine, porcine, rat)
CAS:Catalogue peptide; min. 95% purity
Formula:C121H193N33O30SPeso molecolare:2,638.15 g/molRef: 3D-VAC-00014
Prodotto fuori produzioneBiotin-Neurokinin B
Catalogue peptide; min. 95% purity
Formula:C67H87N15O14Peso molecolare:1,326.53 g/molRef: 3D-VAC-00082
Prodotto fuori produzioneH-D-Phe-pip-Arg-pna acetate
CAS:H-D-Phe-pip-Arg-pna acetate is an allosteric modulator that binds to the active site of thrombin. It inhibits activation of zymogen thrombin by binding to its receptor, thereby inhibiting clotting and coagulation. This compound has been shown to inhibit the activation of pyogenes by preventing the formation of fibrin clots, which are essential for bacterial growth. H-D-Phe-pip-Arg-pna acetate has also been shown to have an inhibitory effect on activated coagulation.
Formula:C27H36N8O5Purezza:Min. 95%Peso molecolare:552.6 g/molNES Topoisomerase II alpha (1017-1028)
Catalogue peptide; min. 95% purity
Formula:C73H117N19O19Peso molecolare:1,564.86 g/molRef: 3D-VAC-00329
Prodotto fuori produzioneα-Melanocyte Stimulating Hormone, acetylated-[D-Val13] (11-13) (MSHa)
Catalogue peptide; min. 95% purity
Formula:C18H33N5O4Peso molecolare:383.49 g/molRef: 3D-VAC-00035
Prodotto fuori produzioneBAD (103-127), human
Catalogue peptide; min. 95% purity
Formula:C137H212N42O39SPeso molecolare:3,103.54 g/molRef: 3D-VAC-00617
Prodotto fuori produzione[D-Ala2]-beta-Casomorphin (1-5) amide (bovine)
Catalogue peptide; min. 95% purity
Formula:C28H36N6O6Peso molecolare:552.64 g/molRef: 3D-VAC-00828
Prodotto fuori produzioneBiotin-Bradykinin
Catalogue peptide; min. 95% purity
Formula:C60H87N17O13SPeso molecolare:1,286.53 g/molRef: 3D-VAC-00108
Prodotto fuori produzioneP69 (522-534), M. leprae
Catalogue peptide; min. 95% purity
Formula:C52H84N14O21Peso molecolare:1,241.33 g/molRef: 3D-VAC-00624
Prodotto fuori produzioneFmoc-Glu(OtBu)-Wang resin (100-200 mesh)
Please enquire for more information about Fmoc-Glu(OtBu)-Wang resin (100-200 mesh) including the price, delivery time and more detailed product information at the technical inquiry form on this page
Purezza:Min. 95%Ref: 3D-FF111727
Prodotto fuori produzione[Ala5, beta-Ala8]-Neurokinin A (4-10)
Catalogue peptide; min. 95% purity
Formula:C35H56N8O9SPeso molecolare:765 g/molRef: 3D-VAC-00317
Prodotto fuori produzione[Ala144]-PLP (139-151) A144-PLP(139-151)
Catalogue peptide; min. 95% purity
Formula:C64H99N19O17Peso molecolare:1,406.62 g/molRef: 3D-VAC-00493
Prodotto fuori produzionebeta-Lipotropin (61-64)
Catalogue peptide; min. 95% purity
Formula:C22H26N4O6Peso molecolare:442.48 g/molRef: 3D-VAC-00886
Prodotto fuori produzioneInfluenza A NP (366-374)
Catalogue peptide; min. 95% purity
Formula:C36H59N11O17S2Peso molecolare:982.06 g/molRef: 3D-VAC-00254
Prodotto fuori produzioneH-Ala-Abu-OH
CAS:Please enquire for more information about H-Ala-Abu-OH including the price, delivery time and more detailed product information at the technical inquiry form on this page
Formula:C7H14N2O3Purezza:Min. 90%Colore e forma:PowderPeso molecolare:174.2 g/molRef: 3D-FA107958
Prodotto fuori produzione[Tyr1]-pTH (1-34) (rat)
Catalogue peptide; min. 95% purity
Formula:C186H295N55O49S2Peso molecolare:4,149.86 g/molRef: 3D-VAC-00930
Prodotto fuori produzioneCC Chemokine Receptor 3 Fragment II, amide
Catalogue peptide; min. 95% purity
Formula:C114H175N25O42S2Peso molecolare:2,631.93 g/molRef: 3D-VAC-00613
Prodotto fuori produzioneCorticotropin trifluoroacetate
Please enquire for more information about Corticotropin trifluoroacetate including the price, delivery time and more detailed product information at the technical inquiry form on this page
Purezza:Min. 95%Ref: 3D-BC183139
Prodotto fuori produzioneZ-Gly-Gly-Trp-OH TFA
CAS:Please enquire for more information about Z-Gly-Gly-Trp-OH TFA including the price, delivery time and more detailed product information at the technical inquiry form on this page
Formula:C23H24N4O6•C2HF3O2Purezza:Min. 95%Peso molecolare:566.48 g/molbeta-Defensin-3, human
Catalogue peptide; min. 95% purity
Formula:C216H371N75O59S6Peso molecolare:5,155.22 g/molRef: 3D-VAC-00429
Prodotto fuori produzioneGAD65 (78-97)
Catalogue peptide; min. 95% purity
Formula:C97H148N26O29S2Peso molecolare:2,206.53 g/molRef: 3D-VAC-00543
Prodotto fuori produzioneCecropin A (1-7)-Melittin A (2-9) amide
Catalogue peptide; min. 95% purity
Formula:C89H152N22O15Peso molecolare:1,770.34 g/molRef: 3D-VAC-00558
Prodotto fuori produzioneα-Bag Cell Peptide (1-8)
Catalogue peptide; min. 95% purity
Formula:C47H72N14O11Peso molecolare:1,009.19 g/molRef: 3D-VAC-00246
Prodotto fuori produzione[Tyr27]-pTH (27-48) (human)
Catalogue peptide; min. 95% purity
Formula:C104H159N29O31Peso molecolare:2,311.60 g/molRef: 3D-VAC-00893
Prodotto fuori produzioneBiotin-VIP (human, bovine, porcine, rat)
Catalogue peptide; min. 95% purity
Formula:C157H252N46O44S2Peso molecolare:3,552.17 g/molRef: 3D-VAC-00097
Prodotto fuori produzioneGastrin Releasing Peptide (1-16), human
Catalogue peptide; min. 95% purity
Formula:C74H121N17O20SPeso molecolare:1,600.9 g/molRef: 3D-VAC-00807
Prodotto fuori produzioneAllatostatin I (free acid)
Catalogue peptide; min. 95% purity
Formula:C61H94N18O16Peso molecolare:1,335.5 g/molRef: 3D-VAC-00247
Prodotto fuori produzioneProinsulin C-peptide (55-89), human
Catalogue peptide; min. 95% purity
Formula:C153H259N49O52Peso molecolare:3,616.98 g/molRef: 3D-VAC-00682
Prodotto fuori produzioneBiotin-Angiotensin I, human
Catalogue peptide; min. 95% purity
Formula:C72H103N19O16SPeso molecolare:1,522.81 g/molRef: 3D-VAC-00084
Prodotto fuori produzione[Gln22]-25359-Amyloid (6-40)
Catalogue peptide; min. 95% purity
Formula:C167H258N46O48SPeso molecolare:3,710.26 g/molRef: 3D-VAC-00470
Prodotto fuori produzionePGC-1α (205-216), Proliferator-activated Receptor Coactivator-1 α (205-216)
Catalogue peptide; min. 95% purity
Formula:C65H109N17O19SPeso molecolare:1,464.75 g/molRef: 3D-VAC-00045
Prodotto fuori produzioneH-Asp-NH2
CAS:H-Asp-NH2 is an isomeric mixture of l-phenylalanine and its methyl ester. It is used as a feed additive in animals to improve growth and feed conversion efficiency. The deamination of H-Asp-NH2 produces hydrogen peroxide, which has been shown to be lethal to enterobacteriaceae. This compound may also act as a microbial growth inhibitor by preventing the formation of peptides during synthesis.
Formula:C4H8N2O3Purezza:Min. 95%Peso molecolare:132.12 g/molBiotin-a-CGRP (canine, mouse, rat)
Catalogue peptide; min. 95% purity
Formula:C172H276N52O54S3Peso molecolare:4,032.63 g/molRef: 3D-VAC-00115
Prodotto fuori produzioneAmyloid beta-Protein (25-35) amide
Catalogue peptide; min. 95% purity
Formula:C45H82N14O13SPeso molecolare:1,059.31 g/molRef: 3D-VAC-00452
Prodotto fuori produzione(D-Ser(tBu)6,D-Leu7,Azagly10)-LHRH
CAS:Please enquire for more information about (D-Ser(tBu)6,D-Leu7,Azagly10)-LHRH including the price, delivery time and more detailed product information at the technical inquiry form on this pageFormula:C59H84N18O14Purezza:Min. 95%Peso molecolare:1,269.41 g/molRef: 3D-FS109491
Prodotto fuori produzione[Ile-Ser]-Bradykinin (T-Kinin)
Catalogue peptide; min. 95% purity
Formula:C59H89N17O14Peso molecolare:1,260.47 g/molRef: 3D-VAC-00511
Prodotto fuori produzioneBig Gastrin-1, human
Catalogue peptide; min. 95% purity
Formula:C176H251N43O53SPeso molecolare:3,849.30 g/molRef: 3D-VAC-00188
Prodotto fuori produzioneRef: 3D-VAC-00724
Prodotto fuori produzioneChorionic Gonadotropin-beta(109-119) amide (human)
Catalogue peptide; min. 95% purity
Formula:C51H76N16O21SPeso molecolare:1,269.31 g/molRef: 3D-VAC-00756
Prodotto fuori produzione[Lys0] g-1-MSH, amide
Catalogue peptide; min. 95% purity
Formula:C78H109N23O15SPeso molecolare:1,640.95 g/molRef: 3D-VAC-00562
Prodotto fuori produzione2A/2B Dengue Protease Substrate
Catalogue peptide; min. 95% purity
Formula:C39H68N16O11Peso molecolare:937.08 g/molRef: 3D-VAC-00048
Prodotto fuori produzionebeta-Casomorphin (1-3) amide
Catalogue peptide; min. 95% purity
Formula:C23H28N4O4Peso molecolare:424.50 g/molRef: 3D-VAC-00901
Prodotto fuori produzioneNeurotrophic Factor for Retinal Cholinergic Neurons
Catalogue peptide; min. 95% purity
Formula:C53H84N12O16Peso molecolare:1,145.33 g/molRef: 3D-VAC-00891
Prodotto fuori produzioneRef: 3D-VAC-00574
Prodotto fuori produzioneFMRF-related peptide, SDPFLRF-NH2
Catalogue peptide; min. 95% purity
Formula:C42H61N11O10Peso molecolare:880.02 g/molRef: 3D-VAC-00707
Prodotto fuori produzione[Met5,Arg6,7,Val8,Gly9] Enkephalin
Catalogue peptide; min. 95% purity
Formula:C46H71N15O11SPeso molecolare:1,042.24 g/molRef: 3D-VAC-00877
Prodotto fuori produzioneGrowth Hormone Releasing Factor, GRF (1-40), amide, human
Catalogue peptide; min. 95% purity
Formula:C194H318N62O62SPeso molecolare:4,543.14 g/molRef: 3D-VAC-00847
Prodotto fuori produzioneα-Neo-Endorphin (1-7)
Catalogue peptide; min. 95% purity
Formula:C40H61N11O9Peso molecolare:840.00 g/molRef: 3D-VAC-00866
Prodotto fuori produzioneFmoc-D-Asp(OtBu)-(Hmb)Gly-OH
CAS:Please enquire for more information about Fmoc-D-Asp(OtBu)-(Hmb)Gly-OH including the price, delivery time and more detailed product information at the technical inquiry form on this page
Formula:C33H36N2O9Purezza:Min. 95%Peso molecolare:604.65 g/molRef: 3D-FF111346
Prodotto fuori produzioneHIV-gp41-Antigenic Peptide 5
Catalogue peptide; min. 95% purity
Formula:C184H282N56O53S2Peso molecolare:4,190.77 g/molRef: 3D-VAC-00698
Prodotto fuori produzioneBiotin-LC-Neurogranin (28-43)
Catalogue peptide; min. 95% purity
Formula:C94H159N31O20S2Peso molecolare:2,139.48 g/molRef: 3D-VAC-00065
Prodotto fuori produzioneMAP Kinase Substrate
Catalogue peptide; min. 95% purity
Formula:C101H172N30O32Peso molecolare:2,318.66 g/molRef: 3D-VAC-00546
Prodotto fuori produzioneTNF-α(71-82), human
Catalogue peptide; min. 95% purity
Formula:C51H91N19O18Peso molecolare:1,258.41 g/molRef: 3D-VAC-00735
Prodotto fuori produzioneRef: 3D-VAC-00213
Prodotto fuori produzioneFibronectin Type III Connecting Segment (1-25)
Catalogue peptide; min. 95% purity
Formula:C123H195N31O39Peso molecolare:2,732.04 g/molRef: 3D-VAC-00324
Prodotto fuori produzioneLeucopyrokinin (LPK)
Catalogue peptide; min. 95% purity
Formula:C42H66N12O12Peso molecolare:931.06 g/molRef: 3D-VAC-00201
Prodotto fuori produzioneMARCKS Protein (151-175)
Catalogue peptide; min. 95% purity
Formula:C147H243N41O31Peso molecolare:3,080.83 g/molRef: 3D-VAC-00526
Prodotto fuori produzioneBiotin-[Glu1]-Gastrin I (human) (phosphorylated)
Catalogue peptide; min. 95% purity
Formula:C107H141N22O37PS2Peso molecolare:2,422.53 g/molRef: 3D-VAC-00087
Prodotto fuori produzioneRef: 3D-VAC-00430
Prodotto fuori produzioneIL34 Human, His
IL34 Human Recombinant produced in E.Coli is a single, non-glycosylated polypeptide chain containing 260 amino acids (21-242 a.a) and having a molecular mass of 29.6kDa. IL34 is fused to a 38 amino acid His-tag at N-terminus & purified by proprietary chromatographic techniques.
Purezza:Min 85% By Sds-Page.ADP-Ribosylation Factor 6, ARF6 (2-13)
Catalogue peptide; min. 95% purity
Formula:C60H102N16O17Peso molecolare:1,319.58 g/molRef: 3D-VAC-00433
Prodotto fuori produzione[Gln11]-beta-Amyloid (1-40)
Catalogue peptide; min. 95% purity
Formula:C194H296N54O57SPeso molecolare:4,328.91 g/molRef: 3D-VAC-00314
Prodotto fuori produzioneFas C-Terminal Tripeptide
Catalogue peptide; min. 95% purity
Formula:C16H29N3O6Peso molecolare:359.43 g/molRef: 3D-VAC-00050
Prodotto fuori produzioneVasoactive Intestinal Contractor [VIC]
Catalogue peptide; min. 95% purity
Formula:C116H161N27O32S4Peso molecolare:2,573.99 g/molRef: 3D-VAC-00288
Prodotto fuori produzioneDynorphin A (3-13), porcine
Catalogue peptide; min. 95% purity
Formula:C64H114N22O12Peso molecolare:1,383.76 g/molRef: 3D-VAC-00412
Prodotto fuori produzioneAmyloid Dan Protein (1-34)
Catalogue peptide; min. 95% purity
Formula:C185H268N48O51S2Peso molecolare:4,044.63 g/molRef: 3D-VAC-00166
Prodotto fuori produzionep3K truncated, (Lys 58 Lys 60 Lys 63) Ea(54-68)
Catalogue peptide; min. 95% purity
Formula:C59H97N17O19Peso molecolare:1,348.53 g/molRef: 3D-VAC-00383
Prodotto fuori produzioneFluorescein-6-carbonyl-Ile-Glu(OMe)-Thr-DL-Asp(OMe)-fluoromethylketone
CAS:Please enquire for more information about Fluorescein-6-carbonyl-Ile-Glu(OMe)-Thr-DL-Asp(OMe)-fluoromethylketone including the price, delivery time and more detailed product information at the technical inquiry form on this page
Formula:C43H47FN4O15Purezza:Min. 95%Peso molecolare:878.85 g/molSynaptobrevin-2 (75-78) (human, bovine, mouse, rat)
Catalogue peptide; min. 95% purity
Formula:C23H33N5O9Peso molecolare:523.55 g/molRef: 3D-VAC-00640
Prodotto fuori produzioneAdrenomedullin (1-52), porcine
Catalogue peptide; min. 95% purity
Formula:C262H403N79O76S3Peso molecolare:5,971.67 g/molRef: 3D-VAC-00918
Prodotto fuori produzioneParathyroid Hormone (1-34)-Lys(Biotin), human
Catalogue peptide; min. 95% purity
Formula:C197H317N59O54S3Peso molecolare:4,472.26 g/molRef: 3D-VAC-00752
Prodotto fuori produzione[Ala4]-MBP (1-11)
Catalogue peptide; min. 95% purity
Formula:C49H81N21O17Peso molecolare:1,236.32 g/molRef: 3D-VAC-00021
Prodotto fuori produzioneCalcitonin N-Terminal Flanking Peptide, human
Catalogue peptide; min. 95% purity
Formula:C264H426N74O97SPeso molecolare:6,220.84 g/molRef: 3D-VAC-00238
Prodotto fuori produzioneAmyloid Bri Protein (1-34)
Catalogue peptide; min. 95% purity
Formula:C173H273N49O52S2Peso molecolare:3,935.55 g/molRef: 3D-VAC-00168
Prodotto fuori produzionebeta-Amyloid/A4 Protein Precursor (APP) (96-110), analog
Catalogue peptide; min. 95% purity
Formula:C81H128N32O19S2Peso molecolare:1,918.25 g/molRef: 3D-VAC-00039
Prodotto fuori produzioneTNF-α(10-36) (human)
Catalogue peptide; min. 95% purity
Formula:C131H211N43O38Peso molecolare:2,996.41 g/molRef: 3D-VAC-00330
Prodotto fuori produzioneRef: 3D-VAC-00392
Prodotto fuori produzione(Deamino-Phe19,D-Ala24,D-Pro26-psi(CH2NH)Phe27)-GRP (19-27) (human, porcine, canine) trifluoroacetate salt
CAS:Please enquire for more information about (Deamino-Phe19,D-Ala24,D-Pro26-psi(CH2NH)Phe27)-GRP (19-27) (human, porcine, canine) trifluoroacetate salt including the price, delivery time and more detailed product information at the technical inquiry form on this page
Formula:C57H72N14O8Purezza:Min. 95%Peso molecolare:1,081.27 g/molMyristoylated ADP-Ribosylation Factor 6, myr-ARF6 (2-13)
Catalogue peptide; min. 95% purity
Formula:C74H128N16O18Peso molecolare:1,529.95 g/molRef: 3D-VAC-00162
Prodotto fuori produzionebeta-Amyloid (10-35)
Catalogue peptide; min. 95% purity
Formula:C133H204N34O37SPeso molecolare:2,903.38 g/molRef: 3D-VAC-00863
Prodotto fuori produzione[Ile12, Val15] MUC5AC Analog 3
Catalogue peptide; min. 95% purity
Formula:C67H112N16O25Peso molecolare:1,541.73 g/molRef: 3D-VAC-00456
Prodotto fuori produzioneAc-Adhesin (1025-1044) amide
Catalogue peptide; min. 95% purity
Formula:C97H160N26O32Peso molecolare:2,202.51 g/molRef: 3D-VAC-00042
Prodotto fuori produzioneHypercalcemia Malignancy Factor (1-40)
Catalogue peptide; min. 95% purity
Formula:C180H287N57O48Peso molecolare:4,017.55 g/molRef: 3D-VAC-00260
Prodotto fuori produzione[Ile34]-beta-Amyloid (25-34)
Catalogue peptide; min. 95% purity
Formula:C40H72N12O13Peso molecolare:929.09 g/molRef: 3D-VAC-00451
Prodotto fuori produzioneH-GILGFVFTL-OH
CAS:FluM1 (58-66) is a short part of the matrix protein of Influenza A virus which is the most abundant component of this enveloped virus localized under the viral lipid envelope. The GILGFVFTL epitope is highly conserved in Influenza A virus strains at a rate of 93% for 69 strains tested. Human Influenza epitopes may bind MHC molecules and then may be recognized by CD8+ cytotoxic T cells. Applications of FluM1 (58-66): FluM1 (58-66) is used to stimulate CTL responses in peripheral blood mononuclear cells (PBMCs). Then, ELISPOT assay is used to quantify peptide epitope specificity and IFN-γ releasing effector cells. FluM1 (58-66) has shown CTL responses qualified of immunodominant with restriction by HLA-A*02:01. It has also been detected CTL responses when FluM1 (58-66) is restricted by all HLA-C. Therefore, FluM1 (58-66) may help to understand the reaction of immune system against Influenza virus of each populations having different HLA type. FluM1 (58-66) has indeed prompted research to develop T-cell vaccine strategies capable of inducing specific CTL responses in patients upon immunization with Influenza M1 antigenic epitope. MVA-NP+M1 vaccine use GILGFVFTL epitope and is tested in clinical trial. Potential cross-reactivity with HIV-1 p17 Gag (77-85): Moreover, FluM1 (58-66) share similarities with HIV-1 p17 Gag (77-85) which can potentially show a cross-reactivity between these epitopes. It has been demonstrated a cross-reactivity and results suggest that immunity following infection by Influenza virus causes specific immune response to HIV-1 p17 Gag (77-85).
Formula:C49H75N9O11Peso molecolare:966.18 g/molRef: 3D-PP48052
Prodotto fuori produzioneCerebellin trifluoroacetate
CAS:Please enquire for more information about Cerebellin trifluoroacetate including the price, delivery time and more detailed product information at the technical inquiry form on this page
Formula:C69H113N23O23•(C2HF3O2)4Purezza:Min. 95%Peso molecolare:2,088.86 g/molH-ASCLYGQLPK-OH
Peptide H-ASCLYGQLPK-OH is a Research Peptide with significant interest within the field academic and medical research. This peptide is available for purchase at Cymit Quimica in multiple sizes and with a specification of your choice.
Formula:C48H76N12O13SPeso molecolare:1,079.27 g/molRef: 3D-PP42775
Prodotto fuori produzioneAngiotensin A (1-7) trifluoroacetate
CAS:Endogenous heptapetide which causes vasodilation and has anti-hypertensive properties.
Formula:C40H62N12O9•(C2HF3O2)xPurezza:Min. 95%Colore e forma:PowderPeso molecolare:855 g/molCoibamide A
CAS:Please enquire for more information about Coibamide A including the price, delivery time and more detailed product information at the technical inquiry form on this page
Formula:C65H110N10O16Purezza:Min. 95%Peso molecolare:1,287.65 g/mol
