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CAS 123948-87-8 Topotecan molecular structure lightbox
CAS RN: 123948-87-8

Topotecan

Product Availability

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6 package records6 with current stock2 grade groups
Batch No.PackageAvailabilityWarehouseInquiry
Batchno.20250921 100mg In stock Shanghai Inquiry
Batchno.20260619 20mg In stock Shanghai, Shandong, Guangdong Inquiry
Batch No.PackageAvailabilityWarehouseInquiry
Batchno.20260625 100mg In stock Shanghai Inquiry
Batchno.20250910 1mg In stock Shanghai Inquiry
Batchno.20251122 25mg In stock Shanghai Inquiry
Batchno.20250825 50mg In stock Shanghai Inquiry
  • Product code: SSC-027582
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Historical Factory Record

Historical Supply Reference

This product has historical factory records. Recorded pack sizes and purity can be used as a supply reference, while project-specific availability is confirmed by inquiry.

  • Pack sizes on record: 0.1g
  • Available purity: >95%
  • Inventory rows with stock: 0
  • Bulk packaging: confirmed by inquiry
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Reference Pack Sizes

Reference pack sizes are shown below. Final availability, packaging and delivery schedule are confirmed by inquiry.

Recorded sizes, purity and stock details for CAS 123948-87-8
Pack Size Recorded Purity Available Qty Ship From Inquiry
0.1g >95% 0 Out of Stock Shanghai Inquiry

123948-87-8 / (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

Standard CAS: 123948-87-8 Multi CAS: No
Basic Information Physical Properties Computed Properties Safety & Transport

Basic Information

CAS
123948-87-8
Multi CAS
No
Molecular Formula
C23H23N3O5
Molecular Weight
421.400000
Exact Mass
421.163771
SMILES
CC[C@@]1(C2=C(COC1=O)C(=O)N3CC4=CC5=C(C=CC(=C5CN(C)C)O)N=C4C3=C2)O
InChI
InChI=1S/C23H23N3O5/c1-4-23(30)16-8-18-20-12(9-26(18)21(28)15(16)11-31-22(23)29)7-13-14(10-25(2)3)19(27)6-5-17(13)24-20/h5-8,27,30H,4,9-11H2,1-3H3/t23-/m0/s1
InChIKey
UCFGDBYHRUNTLO-QHCPKHFHSA-N

Physical Properties

Melting Point
213-218 °C 213 - 218 °C
Physical Description
Solid
State
Solid
Storage Conditions
Store the vials protected from light in the original cartons at controlled room temperature between 20 deg and 25 °C (68 deg and 77 °F). Conditions for safe storage, including any incompatibilities: Keep container tightly closed in a dry and well-ventilated place. Recommended storage temperature: -20 °C.

Computed Properties

Structural Parameters

Heavy atom count
31
Aromatic heavy atom count
16
Fraction Csp3
0.35
Rotatable bonds
3
H-bond acceptors
8
H-bond donors
2
Molar refractivity
113.58
TPSA
104.89

LogP / Solubility

WLOGP
1.85
MLOGP
1.65
XLogP3
0.5
Consensus LogP
1.33
Log S (ESOL)
-3.8
Class (ESOL)
Poorly soluble
Log S (Ali)
-4.35
Class (Ali)
Slightly soluble
Log S (SILICOS-IT)
-4.29
Class (SILICOS-IT)
Slightly soluble

ADME

GI absorption
High
BBB permeant
No
P-gp substrate
No
CYP1A2 inhibitor
Yes
CYP2C19 inhibitor
No
CYP2C9 inhibitor
No
CYP2D6 inhibitor
Yes
CYP3A4 inhibitor
No
Log Kp (skin permeation)
-3.98

Drug-likeness / Medicinal Chemistry

Lipinski
Yes
Ghose
Yes
Veber
Yes
Egan
Yes
Muegge
Yes
Bioavailability score
0.55
PAINS alerts
1
Leadlikeness
No
Synthetic Accessibility
4

Safety & Transport

Pictogram(s)
Acute Toxic Irritant Health Hazard
Signal
Danger Warning
GHS Hazard Statements
H301 (18.8%): Toxic if swallowed [Danger Acute toxicity, oral] H315 (20.8%): Causes skin irritation [Warning Skin corrosion/irritation] H319 (20.8%): Causes serious eye irritation [Warning Serious eye damage/eye irritation] H335 (18.8%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation] H340 (18.8%): May cause genetic defects [Danger Germ cell mutagenicity]
Precautionary Statement Codes
P203, P261, P264, P264+P265, P270, P271, P280, P301+P316, P302+P352, P304+P340, P305+P351+P338, P318, P319, P321, P330, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501 P203, P280, P318, P405, and P501

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