K 41B

    WARNING: This product is for research use only, not for human or veterinary use.

MedKoo CAT#: 414198

CAS#: 72017-85-7

Description: K 41B is a new diglycoside polyether antibiotic.


Chemical Structure

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K 41B
CAS# 72017-85-7

Theoretical Analysis

MedKoo Cat#: 414198
Name: K 41B
CAS#: 72017-85-7
Chemical Formula: C54H92O20
Exact Mass: 1060.6182
Molecular Weight: 1061.31
Elemental Analysis: C, 61.11; H, 8.74; O, 30.15

Price and Availability

This product is not in stock, which may be available by custom synthesis. For cost-effective reason, minimum order is 1g (price is usually high, lead time is 2~3 months, depending on the technical challenge). Quote less than 1g will not be provided. To request quote, please email to sales @medkoo.com or click below button.
Note: Price will be listed if it is available in the future.

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Synonym: K 41B; K-41B; K41B

IUPAC/Chemical Name: 2-(4-ethyl-2,3-dihydroxy-6-((2-(5'-(6-hydroxy-4-((5-methoxy-6-methyltetrahydro-2H-pyran-2-yl)oxy)-3,5,6-trimethyltetrahydro-2H-pyran-2-yl)octahydro-[2,2'-bifuran]-5-yl)-9-methoxy-3-((5-methoxy-6-methyltetrahydro-2H-pyran-2-yl)oxy)-2,4,10-trimethyl-1,6-dioxaspiro[4.5]decan-7-yl)methyl)-5-methoxy-5-methyltetrahydro-2H-pyran-2-yl)-2-hydroxyacetic acid

InChi Key: HSSQWCAMESAISF-UHFFFAOYSA-N

InChi Code: InChI=1S/C54H92O20/c1-15-33-46(55)53(60,47(56)49(57)58)72-41(50(33,8)64-14)25-32-24-39(63-13)27(3)54(71-32)29(5)48(70-43-23-20-35(62-12)31(7)66-43)51(9,74-54)40-21-18-37(68-40)36-16-17-38(67-36)45-26(2)44(28(4)52(10,59)73-45)69-42-22-19-34(61-11)30(6)65-42/h26-48,55-56,59-60H,15-25H2,1-14H3,(H,57,58)

SMILES Code: CCC1C(C(OC(C1(OC)C)CC2CC(C(C3(OC(C4CCC(C5CCC(C6OC(O)(C(C(C6C)OC7CCC(C(O7)C)OC)C)C)O5)O4)(C(C3C)OC8CCC(C(O8)C)OC)C)O2)C)OC)(C(C(O)=O)O)O)O

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 1061.31 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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1: Chen J, Gui C, Wei Q, Liu J, Ye L, Tian X, Gu YC, Li Q, Ju J. Characterization of Tailoring Methyltransferases Involved in K-41A Biosynthesis: Modulating Methylation to Improve K-41A Anti-infective Activity. Org Lett. 2020 Jun 19;22(12):4627-4632. doi: 10.1021/acs.orglett.0c01347. Epub 2020 Jun 8. PMID: 32511927.

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