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Chemical structure of Topotecan

GC17833

Topotecan

Also known as (19S)-8-[(dimethylamino)methyl]-19-ethyl-7,19-dihydroxy-17-oxa-3,13-diazapentacyclo[11.8.0.02,11.04,9.015,20]henicosa-1(21),2,4(9),5,7,10,15(20)-heptaene-14,18-dione

Topotecan (catalogue number GC17833) is a research-grade chemical available from LABO Scientific in Israel, CAS registry number 123948-87-8. Molecular formula C23H23N3O5, molecular weight 421.45. IUPAC name: (19S)-8-[(dimethylamino)methyl]-19-ethyl-7,19-dihydroxy-17-oxa-3,13-diazapentacyclo[11.8.0.02,11.04,9.015,20]henicosa-1(21),2,4(9),5,7,10,15(20)-heptaene-14,18-dione. Supplied in 5 pack sizes, from 10mg at ₪118.29 to 1000mg at ₪3,361.03; the final price is confirmed on your quote, and the lot certificate of analysis and safety data sheet are emailed with your order confirmation.

ChemicalCAS123948-87-8MW421.45FormulaC23H23N3O5
CAS number
123948-87-8
Molecular weight
421.45
Formula
C23H23N3O5
Solubility
≥ 21·1mg/mL in DMSO
InChIKey
UCFGDBYHRUNTLO-QHCPKHFHSA-N
Catalogue number
GC17833
Brand
GLPBIO
Computed properties PubChem CID 60700 · XLogP 0.5 · TPSA 103 Ų · H-bond donors 2
XLogP
0.5
TPSA
103 Ų
H-bond donors
2
H-bond acceptors
7
Rotatable bonds
3
Heavy atoms
31

SMILES CC[C@@]1(C2=C(COC1=O)C(=O)N3CC4=CC5=C(C=CC(=C5CN(C)C)O)N=C4C3=C2)O

Computed descriptors from PubChem (CID 60700), public domain. Identity cross-checked against the supplier's molecular formula and weight — verify before use.

Ordering in Israel

Lead time
Ships from the manufacturer to your lab in 8–14 business days; customs and cold chain handled by LABO Scientific.
Pricing
Quoted in ILS, excl. VAT. Add the item to your quote and we confirm the final price, usually the same business day.
Documents
Lot certificate of analysis and manufacturer SDS are emailed with your order confirmation.
Who we serve
Universities, hospitals and biotech companies across Israel. Research use only — not for diagnostic or therapeutic use.