Calcium-Sensing receptor blocker (antagonist)s I is a calcium-sensitive parathyroid hormone receptor blocker (antagonist). Calcium-Sensing receptor blocker (antagonist)s I is a reagent for click chemistry. It has Alkyne groups and could undergo CuAAc (copper-catalyzed azide-alkyne cycloaddition reaction) with compounds bearing Azide groups.

Physicochemical Properties

Molecular Formula	C23H24N2O2
Molecular Weight	360.44886
Exact Mass	360.184
CAS #	478963-79-0
PubChem CID	10109178
Appearance	Light yellow to yellow solid powder
Density	1.085g/cm3
Boiling Point	510.1ºC at 760 mmHg
Flash Point	262.299ºC
Index of Refraction	1.572
LogP	4.779
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	2
Rotatable Bond Count	5
Heavy Atom Count	27
Complexity	607
Defined Atom Stereocenter Count	0
InChi Key	RXVZJHDMMKTKDR-UHFFFAOYSA-N
InChi Code	InChI=1S/C23H24N2O2/c1-6-13-27-19-11-12-21-20(14-19)22(24-23(26)25(21)16(4)5)18-9-7-17(8-10-18)15(2)3/h1,7-12,14-16H,13H2,2-5H3
Chemical Name	1-propan-2-yl-4-(4-propan-2-ylphenyl)-6-prop-2-ynoxyquinazolin-2-one
HS Tariff Code	2934.99.9001
Storage	Powder-20°C 3 years 4°C 2 years In solvent -80°C 6 months -20°C 1 month
Shipping Condition	Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)

Biological Activity

References

[1]. 1-Alkyl-4-phenyl-6-alkoxy-1H-quinazolin-2-ones: A Novel Series of Potent Calcium-Sensing Receptor Antagonists.Journal of Medicinal Chemistry(2010),53(5), 2250-2263.

Solubility Data

Solubility (In Vitro)

DMSO : ≥ 100 mg/mL (~277.43 mM)

Solubility (In Vivo)

Solubility in Formulation 1: ≥ 3.25 mg/mL (9.02 mM) (saturation unknown) in 10% DMSO + 40% PEG300 + 5% Tween80 + 45% Saline (add these co-solvents sequentially from left to right, and one by one), clear solution. For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 32.5 mg/mL clear DMSO stock solution to 400 μL of PEG300 and mix evenly; then add 50 μL of Tween-80 to the above solution and mix evenly; then add 450 μL of normal saline to adjust the volume to 1 mL. Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH₂ O to obtain a clear solution. Solubility in Formulation 2: ≥ 3.25 mg/mL (9.02 mM) (saturation unknown) in 10% DMSO + 90% Corn Oil (add these co-solvents sequentially from left to right, and one by one), clear solution. For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 32.5 mg/mL clear DMSO stock solution to 900 μL of corn oil and mix evenly.  (Please use freshly prepared in vivo formulations for optimal results.)

Preparing Stock Solutions		1 mg	5 mg	10 mg
	1 mM	2.7743 mL	13.8715 mL	27.7431 mL
	5 mM	0.5549 mL	2.7743 mL	5.5486 mL
	10 mM	0.2774 mL	1.3872 mL	2.7743 mL

*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.