Methyltetrazine-acid is a PROTAC (PROteolysis TArgeting Chimera) linker of the alkyl chain class, may be utilized to prepare PROTAC protein degraders.

Physicochemical Properties

Molecular Formula	C11H10N4O2
Molecular Weight	230.22270154953
Exact Mass	230.08
CAS #	1380500-88-8
PubChem CID	60145307
Appearance	Pale purple to purple solid powder
LogP	0.1
Hydrogen Bond Donor Count	1
Hydrogen Bond Acceptor Count	6
Rotatable Bond Count	3
Heavy Atom Count	17
Complexity	258
Defined Atom Stereocenter Count	0
SMILES	OC(CC1C=CC(C2=NN=C(C)N=N2)=CC=1)=O
InChi Key	TZNOWMYISKGWCY-UHFFFAOYSA-N
InChi Code	InChI=1S/C11H10N4O2/c1-7-12-14-11(15-13-7)9-4-2-8(3-5-9)6-10(16)17/h2-5H,6H2,1H3,(H,16,17)
Chemical Name	2-[4-(6-methyl-1,2,4,5-tetrazin-3-yl)phenyl]acetic acid
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

ln Vitro	One ligand is for an E3 ubiquitin ligase, and the other is for the target protein; these two ligands are joined by a linker to form PROTACs. The intracellular ubiquitin-proteasome system is utilized by PROTACs to specifically destroy target proteins[1].
References	[1]. Small-molecule PROTACs: An emerging and promising approach for the development of targeted therapy drugs. EBioMedicine. 2018 Oct;36:553-562.

Solubility Data

Solubility (In Vitro)

DMSO : ~100 mg/mL (~434.37 mM)

Solubility (In Vivo)

Solubility in Formulation 1: ≥ 2.5 mg/mL (10.86 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 25.0 mg/mL clear DMSO stock solution to 400 μL PEG300 and mix evenly; then add 50 μL Tween-80 to the above solution and mix evenly; then add 450 μL 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: ≥ 2.5 mg/mL (10.86 mM) (saturation unknown) in 10% DMSO + 90% (20% SBE-β-CD in 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 25.0 mg/mL clear DMSO stock solution to 900 μL of 20% SBE-β-CD physiological saline solution and mix evenly. Preparation of 20% SBE-β-CD in Saline (4°C，1 week): Dissolve 2 g SBE-β-CD in 10 mL saline to obtain a clear solution.  (Please use freshly prepared in vivo formulations for optimal results.)

Preparing Stock Solutions		1 mg	5 mg	10 mg
	1 mM	4.3437 mL	21.7184 mL	43.4367 mL
	5 mM	0.8687 mL	4.3437 mL	8.6873 mL
	10 mM	0.4344 mL	2.1718 mL	4.3437 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.