A 269A | CAS 38621-52-2

A 269A

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Cat #: V3078 CAS #: 38621-52-2 Purity ≥ 98%

Description: A-269A (also referred to as A269A) is a streptothricin-like antibiotic that was isolated from the culture broth of Streptomyces sp., strain No. A-269. The structure of the antibiotic was examined by 1H NMR, 13C NMR and fast atom bombardment mass spectra studies. Based on the spectroscopic data, A-269A was assumed to be a mixture of antibiotic LL-BL 136 and an isomeric compound in which the carbamoyl group is substituted on C-12' hydroxyl instead of C-10 hydroxyl.

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Physicochemical and Storage Information
Protocol
Related Biological Data
Stock Solution Preparation
Quality Control Documentation

Molecular Weight (MW)	459.46
Molecular Formula	C17H29N7O8
CAS No.	38621-52-2
Storage	-20℃ for 3 years in powder form
Storage	-80℃ for 2 years in solvent
Solubility In Vitro	DMSO:
	Water:
	Ethanol:
Synonyms	A 269A; A269A; A269A

Preparing Stock Solutions

Solvent volume to be added	Mass (the weight of a compound)
Mother liquor concentration	1mg	5mg	10mg	20mg
1mM	2.1765 mL	10.8823 mL	21.7647 mL	43.5294 mL
5mM	0.4353 mL	2.1765 mL	4.3529 mL	8.7059 mL
10mM	0.2176 mL	1.0882 mL	2.1765 mL	4.3529 mL
20mM	0.1088 mL	0.5441 mL	1.0882 mL	2.1765 mL

Quality Control Documentation	Select Batch Purity ≥ 98% COA MSDS NMR HPLC

The molarity calculator equation

Mass(g) = Concentration(mol/L) × Volume(L) × Molecular Weight(g/mol)

Mass

Concentration

Volume

Molecular Weight*

The dilution calculator equation

Concentration_(start) × Volume_(start) = Concentration_(final) × Volume_(final)

This equation is commonly abbreviated as: C₁ V₁ = C₂ V₂

Concentration_(start)

Volume_(start)

Concentration_(final)

Volume_(final)

Step One: Enter information below

Dosage mg/kg Average weight of animals g Dosing volume per animal µL Number of animals

Step Two: Enter the in vivo formulation

%DMSO + % + %Tween 80 + %ddH₂O

Calculation Results:

Working concentration: mg/ml;

Method for preparing DMSO master liquid: mg drug pre-dissolved in µL DMSO(Master liquid concentration mg/mL) ,Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug.

Method for preparing in vivo formulation: Take µL DMSO master liquid, next add µL PEG300, mix and clarify, next add µL Tween 80,mix and clarify, next add µL ddH₂O,mix and clarify.

Note:

(1) Please be sure that the solution is clear before the addition of next solvent. Dissolution methods like vortex, ultrasound or warming and heat may be used to aid dissolving.
(2) Be sure to add the solvent(s) in order.