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Merck
CN

SML3146

RHPS4 methosulfate

≥98% (HPLC)

Synonym(s):

3,11-Difluoro-6,8,13-trimethyl-8H-quino[4,3,2,kl]acridinium methosulfate, NSC 714187, Quino[4,3,2-kl]acridinium, 3,11-difluorohydro-6,8,13-trimethyl-, methyl sulfate (1:1)

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About This Item

Empirical Formula (Hill Notation):
C22H17F2N2 · CH3O4S
CAS Number:
390362-78-4
Molecular Weight:
458.48
UNSPSC Code:
12352200
NACRES:
NA.77
MDL number:
MFCD30182275
Assay:
≥98% (HPLC)
Form:
powder
Quality level:
100
Storage condition:
protect from light

Key Documents

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Product Name

RHPS4 methosulfate, ≥98% (HPLC)

InChI

1S/C22H17F2N2.CH4O4S/c1-12-8-16-15-10-13(23)4-6-18(15)26(3)22-17-11-14(24)5-7-19(17)25(2)20(9-12)21(16)22;1-5-6(2,3)4/h4-11H,1-3H3;1H3,(H,2,3,4)/q+1;/p-1

InChI key

VRWGYMXWYZBBGF-UHFFFAOYSA-M

SMILES string

FC1=CC=C(N(C)C2=C3C4=[N+](C)C5=C(C=C(F)C=C5)C3=CC(C)=C2)C4=C1.[O-]S(=O)(OC)=O

assay

≥98% (HPLC)

form

powder

storage condition

protect from light

color

faint brown to very dark brown-red

solubility

DMSO: 2 mg/mL, clear

storage temp.

2-8°C

Quality Level

100

Related Categories

Biochem/physiol Actions

G-quadruplex (G4)-targeting telomerase inhibitor with anti-cancer efficacy in cultures and in vivo.
RHPS4 is a pentacyclic acridine compound that exerts telomerase inhibitory activity (IC50 = 330 nM by TRAP assay) via targeting telomeric DNA G-quadruplex (G4) structure, causing alteration in the telomeric architecture and telomere dysfunction. RHPS4 induces cell cycle arrest and growth inhibition in cancer cultures in vitro(% GI/culture/time = 93%/21NT/15 days, 67%/A431/12 days, 91%/GM847/15 days; 200 nM replenish twice weekly) and exhibits anti-tumor efficacy in mice in vivo (10-15 mg/kg/d iv.). RHPS4 is also reproted to target mitochondrial DNA (mtDNA) G4 structures, perturbing mitochondrial genome replication, transcription processivity, and respiratory function.

Storage Class

11 - Combustible Solids

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

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Certificates of Analysis (COA)

Lot/Batch Number
0000513541
0000513542
0000513542
0000513541
0000443525

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G-quadruplex DNA targeting alters class-switch recombination in B cells and attenuates allergic inflammation.
Zeinab Dalloul et al.
The Journal of allergy and clinical immunology, 142(4), 1352-1355 (2018-06-24)
PARP1 is activated at telomeres upon G4 stabilization: possible target for telomere-based therapy.
Salvati, et al.
Oncogene, 29, 6280-6293 (2010)
S M Gowan et al.
Molecular pharmacology, 60(5), 981-988 (2001-10-20)
A novel pentacyclic acridine, 3,11-difluoro-6,8,13-trimethyl-8H-quino[4,3,2-kl]acridinium methosulfate (RHPS4), has been identified as a potent inhibitor of telomerase in the cell-free telomeric repeat amplification protocol (TRAP). Modeling and biophysical studies suggest that RHPS4 inhibits telomerase through stabilization of four-stranded G-quadruplex structures formed
Robert A Heald et al.
Journal of medicinal chemistry, 45(3), 590-597 (2002-01-25)
Two short routes to novel methylated pentacyclic quinoacridinium salts have been devised. New compounds display telomerase-inhibitory potency (<1 microM) in the TRAP assay. 3,11-Difluoro-6,8,13-trimethyl-8H-quino[4,3,2-kl]acridinium methosulfate (12d, RHPS4, NSC 714187) has a higher selectivity for triplex and quadruplex DNA structures than
Francesco Berardinelli et al.
The FEBS journal, 285(7), 1226-1236 (2018-02-28)
The pentacyclic acridine RHPS4 is a highly potent and specific G-quadruplex (G4) ligand, which binds and stabilizes telomeric G4 leading to the block of the replication forks at telomeres and consequently to telomere dysfunctionalization. In turn, the cell recognizes unprotected
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