N-Acetyl calicheamicin

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MedKoo CAT#: 408158

CAS#: 108212-76-6

Description: N-Acetyl calicheamicin is a derivative of calicheamicin, and is a potent enediyne antitumor antibiotic. Calicheamicins target DNA and cause strand scission. Calicheamicins bind with DNA in the minor groove, wherein they then undergo a reaction analogous to the Bergman cyclization to generate a diradical species. This diradical, 1,4-didehydrobenzene, then abstracts hydrogen atoms from the deoxyribose (sugar) backbone of DNA, which ultimately leads to strand scission. The specificity of binding of calicheamicin to the minor groove of DNA was demonstrated by Crothers et al. (1999) to be due to the aryltetrasaccharide group of the molecule.

Chemical Structure

N-Acetyl calicheamicin
CAS# 108212-76-6

Theoretical Analysis

MedKoo Cat#: 408158
Name: N-Acetyl calicheamicin
CAS#: 108212-76-6
Chemical Formula: C57H76IN3O22S4
Exact Mass: 1409.2848
Molecular Weight: 1410.3785
Elemental Analysis: C, 48.54; H, 5.43; I, 9.00; N, 2.98; O, 24.96; S, 9.09

Price and Availability

Size Price Availability Quantity
1.0mg USD 650.0 2 Weeks
5.0mg USD 1050.0 2 Weeks
10.0mg USD 1650.0 2 Weeks
25.0mg USD 3250.0 2 Weeks
50.0mg USD 5150.0 2 Weeks
100.0mg USD 9250.0 2 Weeks
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Synonym: N-Acetyl calicheamicin; N-Acetyl-γ-calicheamicin; N-Acetylcalicheamicin γ;

IUPAC/Chemical Name: S-((2R,3S,4S,6S)-6-((((2R,3S,4S,5R,6R)-5-(((2S,4S,5S)-5-(N-ethylacetamido)-4-methoxytetrahydro-2H-pyran-2-yl)oxy)-4-hydroxy-6-(((2S,5Z,9R,13Z)-9-hydroxy-12-((methoxycarbonyl)amino)-13-(2-(methyltrisulfanyl)ethylidene)-11-oxobicyclo[7.3.1]trideca-1(12),5-dien-3,7-diyn-2-yl)oxy)-2-methyltetrahydro-2H-pyran-3-yl)amino)oxy)-4-hydroxy-2-methyltetrahydro-2H-pyran-3-yl) 4-(((2S,3R,4R,5S,6S)-3,5-dihydroxy-4-methoxy-6-methyltetrahydro-2H-pyran-2-yl)oxy)-3-iodo-5,6-dimethoxy-2-methylbenzothioate


InChi Code: InChI=1S/C57H76IN3O22S4/c1-13-61(30(6)62)32-25-76-37(23-36(32)71-7)81-50-45(66)42(27(3)78-55(50)80-35-18-16-14-15-17-20-57(70)24-34(64)43(59-56(69)75-11)40(35)31(57)19-21-85-87-84-12)60-83-38-22-33(63)52(29(5)77-38)86-53(68)39-26(2)41(58)48(51(74-10)47(39)72-8)82-54-46(67)49(73-9)44(65)28(4)79-54/h14-15,19,27-29,32-33,35-38,42,44-46,49-50,52,54-55,60,63,65-67,70H,13,21-25H2,1-12H3,(H,59,69)/b15-14-,31-19-/t27-,28+,29-,32+,33+,35+,36+,37+,38+,42-,44+,45+,46-,49-,50-,52-,54+,55+,57+/m1/s1

SMILES Code: O=C1C[C@]2(O)/C(C([C@]([H])(C#C/C=C\C#C2)O[C@@H]3O[C@H](C)[C@@H](NO[C@@H]4O[C@H](C)[C@@H](SC(C5=C(C)C(I)=C(O[C@H]6[C@H](O)[C@H](OC)[C@@H](O)[C@H](C)O6)C(OC)=C5OC)=O)[C@@H](O)C4)[C@H](O)[C@H]3O[C@H]7C[C@H](OC)[C@@H](N(CC)C(C)=O)CO7)=C1NC(OC)=O)=C\CSSSC

Appearance: Solid powder

Purity: >98% (or refer to the Certificate of Analysis)

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.

Storage Condition: Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).

Solubility: To be determined

Shelf Life: >2 years if stored properly

Drug Formulation: To be determined

Stock Solution Storage: 0 - 4 C for short term (days to weeks), or -20 C for long term (months).

HS Tariff Code: 2934.99.9001

Preparing Stock Solutions

The following data is based on the product molecular weight 1410.3785 Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.

Recalculate based on batch purity %
Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
1 mM 1.15 mL 5.76 mL 11.51 mL
5 mM 0.23 mL 1.15 mL 2.3 mL
10 mM 0.12 mL 0.58 mL 1.15 mL
50 mM 0.02 mL 0.12 mL 0.23 mL

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Additional Information

It was isolated originally in the mid-1980s from the chalky soil, or "caliche pits", located in Kerrville, Texas. The sample was collected by a scientist working for Lederle Labs. It is extremely toxic to all cells and, in 2000, a CD33 antigen-targeted immunoconjugate N-acetyl dimethyl hydrazide calicheamicin was developed and marketed as targeted therapy against the non-solid tumor cancer acute myeloid leukemia (AML). A second calicheamicin-linked monoclonal antibody, inotuzumab ozogamicin (marketed as Besponsa) an anti-CD22-directed antibody-drug conjugate, was approved by the U.S. Food and Drug Administration on August 17, 2017, for use in the treatment of adults with relapsed or refractory B-cell precursor acute lymphoblastic leukemia.Calicheamicin γ1 and the related enediyne esperamicin are the two of the most potent antitumor agents known.