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Optical brighteners

Tpcs2A

Also known as Amphinex, Tetraphenyl chlorin disulfonate, Benzenesulfonic acid, 4,4'-(7,8-dihydro-15,20-diphenyl-21H,23H-porphine-5,10-diyl)bis-

CAS 501083-97-2Formula C44H32N4O6S2Molar mass 776.90 g/mol
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Tpcs2A chemical structure, C44H32N4O6S2, CAS 501083-97-2
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
501083-97-2
Formula
C44H32N4O6S2
Molar mass
776.90 g/mol
HS code
320420
Category
Optical brighteners

What is Tpcs2A?

Plain description, key identifiers and synonyms

Fimaporfin A is the A isomer of fimaporfin, a synthetic light-activated compound, with potential photosensitizing activity. Upon administration, fimaporfin A incorporates into the cell's endosome and lysosome membranes. Subsequently, cytotoxic agents are administered and accumulate in endosomal and lysosomal compartments, upon local activation by light, fimaporfin A produces reactive oxygen species (ROS), such as singlet oxygen, damaging endo/lysosomal membranes and accumulated cytotoxic agents are released into the tumor cell cytosol. This photochemical internalization (PCI) method can enhance the efficacy and selectivity of cytotoxic agents.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
4-[10,15-diphenyl-20-(4-sulfophenyl)-2,3,22,24-tetrahydroporphyrin-5-yl]benzenesulfonic acid
CAS number
501083-97-2
Molecular formula
C44H32N4O6S2
UNII
P4BBY8S91N
InChIKey
MVBCOYVJSZKRIV-UHFFFAOYSA-N
InChI
InChI=1S/C44H32N4O6S2/c49-55(50,51)31-15-11-29(12-16-31)43-37-23-21-35(46-37)41(27-7-3-1-4-8-27)33-19-20-34(45-33)42(28-9-5-2-6-10-28)36-22-24-38(47-36)44(40-26-25-39(43)48-40)30-13-17-32(18-14-30)56(52,53)54/h1-24,46-47H,25-26H2,(H,49,50,51)(H,52,53,54)
SMILES (canonical and isomeric)
C1CC2=NC1=C(C3=CC=C(N3)C(=C4C=CC(=N4)C(=C5C=CC(=C2C6=CC=C(C=C6)S(=O)(=O)O)N5)C7=CC=CC=C7)C8=CC=CC=C8)C9=CC=C(C=C9)S(=O)(=O)O

Synonyms

  • Amphinex
  • Tetraphenyl chlorin disulfonate
  • Benzenesulfonic acid, 4,4'-(7,8-dihydro-15,20-diphenyl-21H,23H-porphine-5,10-diyl)bis-
  • 4-[10,15-diphenyl-20-(4-sulfophenyl)-2,3,22,24-tetrahydroporphyrin-5-yl]benzenesulfonic acid
  • 4,4'-(15,20-Diphenyl-7,8-dihydro- 21H,23H-porphine-5,10-diyl)bisbenzenesulfonic acid

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
776.90 g/molcalc.
Exact mass
776.1763 Dacalc.
LogP (octanol/water)
9.43calc.
Topological polar surface area
166.1 Ųcalc.
Hydrogen bond donors
4calc.
Hydrogen bond acceptors
6calc.
Rotatable bonds
6calc.
Heavy atoms
56calc.
Rings
9calc.
Aromatic rings
7calc.
Fraction sp3 carbons
0.05calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Fails (2 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, C1=Cc2nc1c(-c1ccccc1)c1ccc([nH]1)c(-c1ccccc1)c1nc(c(-c3ccccc3)c3ccc([nH]3)c2-c2ccccc2)CC1

C1=Cc2nc1c(-c1ccccc1)c1ccc([nH]1)c(-c1ccccc1)c1nc(c(-c3ccccc3)c3ccc([nH]3)c2-c2ccccc2)CC1

9 rings, 48 atoms.

4 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Tpcs2A suppliers

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Tpcs2A price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Tpcs2A is traded under.

HS 3204.20Indicative HS code

Synthetic organic products of a kind used as fluorescent brightening agents

World exports in 2024
$485M
−7.4% vs 2023, imports $474M
2019 to 2024
Top exporters
  1. China31.6%
  2. Germany10.8%
  3. Switzerland * partner reported10.0%
Top importers
  1. United States9.6%
  2. Germany9.1%
  3. Indonesia7.1%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Tpcs2A is indicative (it is known at chapter level only). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Tpcs2A, based on the data on this page

What is Tpcs2A?

Fimaporfin A is the A isomer of fimaporfin, a synthetic light-activated compound, with potential photosensitizing activity. Upon administration, fimaporfin A incorporates into the cell's endosome and lysosome membranes.

What is the CAS number of Tpcs2A?

The CAS registry number of Tpcs2A is 501083-97-2.

What is the molecular formula and weight of Tpcs2A?

The molecular formula of Tpcs2A is C44H32N4O6S2 and its molar mass is 776.90 g/mol.

What is Tpcs2A used for?

Known uses and roles of Tpcs2A include optical brighteners in textiles and leather and optical brighteners in home care and cleaning.

Is Tpcs2A hazardous?

No GHS hazard classification for Tpcs2A is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of Tpcs2A?

Tpcs2A is usually classified under HS code 320420 (Synthetic organic products of a kind used as fluorescent brightening agents). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Tpcs2A?

Post a free request on CompoundList and suppliers of Tpcs2A will send you quotes. Your contact details stay private until you accept a quote.

What is the price of Tpcs2A?

Suppliers quote Tpcs2A on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Tpcs2A

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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