SML2179

LDC000067 hydrochloride

≥98% (HPLC)

• Synonym(s): 3-((6-(2-Methoxyphenyl)pyrimidin-4-yl)amino)phenyl)methanesulfonamide hydrochloride, 3-[[6-(2-Methoxyphenyl)-4-pyrimidinyl]amino]-benzenemethanesulfonamide, LDC067
• Empirical Formula (Hill Notation): C₁₈H₁₈N₄O₃S · xHCl
• CAS Number: 1073485-20-7
• Molecular Weight: 370.43 (free base basis)
• MDL number: MFCD28137788
• UNSPSC Code: 12352200
• NACRES: NA.77

Properties

• Assay: ≥98% (HPLC)
• form: powder
• storage condition: protect from light
• color: white to beige
• solubility: DMSO: 2 mg/mL, clear (warmed)
• storage temp.: −20°C
• SMILES string: O=S(CC1=CC(NC2=NC=NC(C3=CC=CC=C3OC)=C2)=CC=C1)(N)=O
• InChI: 1S/C18H18N4O3S/c1-25-17-8-3-2-7-15(17)16-10-18(21-12-20-16)22-14-6-4-5-13(9-14)11-26(19,23)24/h2-10,12H,11H2,1H3,(H2,19,23,24)(H,20,21,22)
• InChI key: GGQCIOOSELPMBB-UHFFFAOYSA-N

Description

Biochem/physiol Actions

LDC000067 (LDC067) is an ATP-competitive, potent and selective cyclin-dependent kinase 9 (CDK9) inhibitor (IC50 = 44 nM/CDK9-CycT1 vs. 5.51 μM/CDK1-CycB1, 2.44 μM/CDK2-CycA, 9.24 μM/CDK4-CycD1, >10 μM/CDK6-CycD3 & CDK7-CycH-MAT1; Kd = 32.7 nM/CDK9-CycT1 vs. 1.01 μM/CDK2-CycA, 16.0 μM/CDK7-CycH-MAT1) with much reduced or little potency against a panel of 28 non-CDK kinases. LDC067 selectively inhibits cellular RNA polymerase II CTD Ser2 phosphorylation (by 40% in HeLa; 60-min, 10 μM LDC067), but not CDK9-independent pSer5 or pSer7, causing apoptosis induction (by 239% and 200% of untreated control in A549 and MCF7 cultures) as a result of blocking RNAPII-mediated mRNA synthesis.

Safety Information

• Storage Class Code: 11 - Combustible Solids
• WGK: WGK 3
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable