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Peptides

Chlorotoxin

Also known as TM601 peptide, TM 601, Chlorotoxin TFA

CAS 163515-35-3Formula C158H249N53O47S11Molar mass 3,995.79 g/mol
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Chlorotoxin chemical structure, C158H249N53O47S11, CAS 163515-35-3
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
163515-35-3
Formula
C158H249N53O47S11
Molar mass
3,995.79 g/mol
HS code
293499
Category
Peptides

What is Chlorotoxin?

Plain description, key identifiers and synonyms

Chlorotoxin is a neurotoxin with potential anticancer property. Chlorotoxin (CTX) is a 36-amino acid peptide found in the venom of the deathstalker scorpion, and a chloride channel blocker. This toxin binds preferentially to glioma cells via the transmembrane endopeptidase matrix metalloproteinase-2 (MMP-2), and thereby prevents the spread of tumor cells. MMP-2 is specifically up-regulated in gliomas and related cancers, but is not normally expressed in brain.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
2-[(1R,4R,5aR,8aS,9R,12S,17aS,18S,20aS,21R,24S,27S,30S,33S,36S,39S,42S,45S,48S,51S,54R,59R,62S,65S,74S,77R,80S,86S,92S)-51,80,92-tris(4-aminobutyl)-5a-[[(2S)-1-amino-5-carbamimidamido-1-oxopentan-2-yl]carbamoyl]-9-[[(2S)-2-amino-4-methylsulfanylbutanoyl]amino]-39,62-bis(3-amino-3-oxopropyl)-24-benzyl-48,86-bis(3-carbamimidamidopropyl)-20a,33-bis(carboxymethyl)-27,30-bis[(1R)-1-hydroxyethyl]-74-[(4-hydroxyphenyl)methyl]-36-(1H-imidazol-4-ylmethyl)-45-methyl-8a-(2-methylpropyl)-12,42-bis(2-methylsulfanylethyl)-a,3,7a,10,10a,13,15a,18a,19,21a,22,25,28,31,34,37,40,43,46,49,52,61,64,70,73,76,79,82,85,88,91,94,97-tritriacontaoxo-2a,3a,6,7,12a,13a,56,57-octathia-2,6a,9a,11,14,16a,19a,20,22a,23,26,29,32,35,38,41,44,47,50,53,60,63,69,72,75,78,81,84,87,90,93,96,99-tritriacontazahexacyclo[57.41.10.84,54.421,77.014,18.065,69]docosahectan-17a-yl]acetic acid
CAS number
163515-35-3 CAS number cross-checked
Molecular formula
C158H249N53O47S11
UNII
06UV5RFW57
InChIKey
QPAKKWCQMHUHNI-GQIQPHNSSA-N
InChI
InChI=1S/C158H249N53O47S11/c1-77(2)55-96-138(241)205-105(144(247)186-86(125(165)228)28-18-47-173-156(166)167)70-264-262-68-103-131(234)177-63-115(217)176-64-116(218)183-87(25-12-15-44-159)128(231)178-65-117(219)184-88(29-19-48-174-157(168)169)129(232)179-66-118(220)185-89(26-13-16-45-160)133(236)202-107-72-267-269-75-110-149(252)195-98(56-81-23-10-9-11-24-81)143(246)208-124(80(5)213)154(257)209-123(79(4)212)153(256)199-102(61-122(226)227)141(244)196-99(58-83-62-172-76-181-83)139(242)189-92(37-39-113(163)215)136(239)190-94(42-53-260-7)132(235)182-78(3)126(229)187-91(30-20-49-175-158(170)171)134(237)188-90(27-14-17-46-161)135(238)203-108(73-266-265-71-106(146(249)193-96)204-137(240)93(38-40-114(164)216)191-151(254)111-31-21-50-210(111)119(221)67-180-130(233)97(194-147(107)250)57-82-33-35-84(214)36-34-82)148(251)198-100(59-120(222)223)140(243)197-101(60-121(224)225)142(245)206-109(150(253)201-103)74-268-263-69-104(200-127(230)85(162)41-52-259-6)145(248)192-95(43-54-261-8)155(258)211-51-22-32-112(211)152(255)207-110/h9-11,23-24,33-36,62,76-80,85-112,123-124,212-214H,12-22,25-32,37-61,63-75,159-162H2,1-8H3,(H2,163,215)(H2,164,216)(H2,165,228)(H,172,181)(H,176,217)(H,177,234)(H,178,231)(H,179,232)(H,180,233)(H,182,235)(H,183,218)(H,184,219)(H,185,220)(H,186,247)(H,187,229)(H,188,237)(H,189,242)(H,190,239)(H,191,254)(H,192,248)(H,193,249)(H,194,250)(H,195,252)(H,196,244)(H,197,243)(H,198,251)(H,199,256)(H,200,230)(H,201,253)(H,202,236)(H,203,238)(H,204,240)(H,205,241)(H,206,245)(H,207,255)(H,208,246)(H,209,257)(H,222,223)(H,224,225)(H,226,227)(H4,166,167,173)(H4,168,169,174)(H4,170,171,175)/t78-,79+,80+,85-,86-,87-,88-,89-,90-,91-,92-,93-,94-,95-,96-,97-,98-,99-,100-,101-,102-,103-,104-,105-,106-,107-,108-,109-,110-,111-,112-,123-,124-/m0/s1
Canonical SMILES
CSCCC(N)C(=O)NC1CSSCC2NC(=O)C(CC(=O)O)NC(=O)C(CC(=O)O)NC(=O)C3CSSCC4NC(=O)C(CCC(N)=O)NC(=O)C5CCCN5C(=O)CNC(=O)C(Cc5ccc(O)cc5)NC(=O)C(CSSCC(NC(=O)C5CCCN5C(=O)C(CCSC)NC1=O)C(=O)NC(Cc1ccccc1)C(=O)NC(C(C)O)C(=O)NC(C(C)O)C(=O)NC(CC(=O)O)C(=O)NC(Cc1c[nH]cn1)C(=O)NC(CCC(N)=O)C(=O)NC(CCSC)C(=O)NC(C)C(=O)NC(CCCNC(=N)N)C(=O)NC(CCCCN)C(=O)N3)NC(=O)C(CCCCN)NC(=O)CNC(=O)C(CCCNC(=N)N)NC(=O)CNC(=O)C(CCCCN)NC(=O)CNC(=O)CNC(=O)C(CSSCC(C(=O)NC(CCCNC(=N)N)C(N)=O)NC(=O)C(CC(C)C)NC4=O)NC2=O
Isomeric SMILES
C[C@H]1C(=O)N[C@H](C(=O)N[C@H](C(=O)N[C@H]2CSSC[C@H]3C(=O)N[C@H](C(=O)N[C@@H](CSSC[C@H]4C(=O)NCC(=O)NCC(=O)N[C@H](C(=O)NCC(=O)N[C@H](C(=O)NCC(=O)N[C@H](C(=O)N[C@@H](CSSC[C@@H](C(=O)N[C@H](C(=O)N[C@H](C(=O)N[C@H](C(=O)N[C@H](C(=O)N[C@H](C(=O)N[C@H](C(=O)N[C@H](C(=O)N1)CCSC)CCC(=O)N)CC5=CNC=N5)CC(=O)O)[C@@H](C)O)[C@@H](C)O)CC6=CC=CC=C6)NC(=O)[C@@H]7CCCN7C(=O)[C@@H](NC(=O)[C@H](CSSC[C@@H](C(=O)N4)NC(=O)[C@@H](NC(=O)[C@@H](NC2=O)CC(=O)O)CC(=O)O)NC(=O)[C@H](CCSC)N)CCSC)C(=O)N[C@H](C(=O)NCC(=O)N8CCC[C@H]8C(=O)N[C@H](C(=O)N3)CCC(=O)N)CC9=CC=C(C=C9)O)CCCCN)CCCNC(=N)N)CCCCN)C(=O)N[C@@H](CCCNC(=N)N)C(=O)N)CC(C)C)CCCCN)CCCNC(=N)N

Synonyms

  • TM601 peptide
  • TM 601
  • Chlorotoxin TFA
  • Chlorotoxin trifluoroacetate salt
  • 163515-35-3 (free base )
  • Chlorotoxin from leiurus quinquestriatus (north africa)

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
3,995.79 g/molcalc.
Exact mass
3,992.5651 Dacalc.
LogP (octanol/water)
-19.11calc.
Topological polar surface area
1,621 Ųcalc.
Hydrogen bond donors
56calc.
Hydrogen bond acceptors
63calc.
Rotatable bonds
60calc.
Heavy atoms
269calc.
Rings
10calc.
Aromatic rings
3calc.
Fraction sp3 carbons
0.63calc.
Formal charge
0calc.
Stereocentres
33calc.
Lipinski rule of five
Fails (3 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

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.

Chlorotoxin suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 5 suppliers
5 of 5 offers

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Where suppliers are based

5 suppliers in 2 countries

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Chlorotoxin price

Indicative price range per kg from live supplier offers

No published prices right now

Suppliers quote this chemical on request. Send one free request and compare quotes side by side.

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Uses and applications

What the substance is used for, by industry and function

Pharmacological actions

  • Neurotoxins

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 Chlorotoxin is traded under.

HS 2934.99Indicative HS code

Nucleic acids and their salts, other heterocyclic compounds, not elsewhere classified in heading 2934

World exports in 2024
$26.7B
+15.0% vs 2023, imports $26.3B
2019 to 2024
Top exporters
  1. Ireland26.3%
  2. China15.7%
  3. Singapore10.3%
Top importers
  1. United States24.5%
  2. Germany23.1%
  3. Japan4.5%
Reported customs values in USD, not prices.Full trade data

The HS code shown for Chlorotoxin is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

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

What is Chlorotoxin?

Chlorotoxin is a neurotoxin with potential anticancer property. Chlorotoxin (CTX) is a 36-amino acid peptide found in the venom of the deathstalker scorpion, and a chloride channel blocker.

What is the CAS number of Chlorotoxin?

The CAS registry number of Chlorotoxin is 163515-35-3.

What is the molecular formula and weight of Chlorotoxin?

The molecular formula of Chlorotoxin is C158H249N53O47S11 and its molar mass is 3,995.79 g/mol.

What is Chlorotoxin used for?

Known uses and roles of Chlorotoxin include neurotoxins.

Is Chlorotoxin hazardous?

No GHS hazard classification for Chlorotoxin 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 Chlorotoxin?

Chlorotoxin is usually classified under HS code 293499 (Nucleic acids and their salts, whether or not chemically defined, other heterocyclic…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Chlorotoxin?

CompoundList lists 5 suppliers of Chlorotoxin in China and France. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of Chlorotoxin?

Suppliers quote Chlorotoxin 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 Chlorotoxin

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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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