WARNING: This product is for research use only, not for human or veterinary use.

MedKoo CAT#: 555976

CAS#: 1432969-86-2

Description: Val-Lys(Boc)-PAB is a ADC linker. Val-Lys(Boc)-PAB was used to prepare camptothecin peptide conjugates as antitumor agents (WO 2019195665). It was used as a non-​linear self-​immolative linker for reducing hydrophobicity of antibody-​drug conjugates for cancer therapy (WO 2018069375).

Chemical Structure

CAS# 1432969-86-2

Theoretical Analysis

MedKoo Cat#: 555976
Name: Val-Lys(Boc)-PAB
CAS#: 1432969-86-2
Chemical Formula: C23H38N4O5
Exact Mass: 450.2842
Molecular Weight: 450.58
Elemental Analysis: C, 61.31; H, 8.50; N, 12.43; O, 17.75

Price and Availability

Size Price Availability Quantity
100.0mg USD 950.0 2 Weeks
200.0mg USD 1450.0 2 Weeks
500.0mg USD 2450.0 2 Weeks
1.0g USD 3450.0 2 Weeks
2.0g USD 5450.0 2 Weeks
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Synonym: Val-Lys(Boc)-PAB;

IUPAC/Chemical Name: tert-butyl ((S)-5-((S)-2-amino-3-methylbutanamido)-6-((4-(hydroxymethyl)phenyl)amino)-6-oxohexyl)carbamate


InChi Code: InChI=1S/C23H38N4O5/c1-15(2)19(24)21(30)27-18(8-6-7-13-25-22(31)32-23(3,4)5)20(29)26-17-11-9-16(14-28)10-12-17/h9-12,15,18-19,28H,6-8,13-14,24H2,1-5H3,(H,25,31)(H,26,29)(H,27,30)/t18-,19-/m0/s1


Appearance: Solid powder

Purity: >98% (or refer to the Certificate of Analysis)

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.

Storage Condition: Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).

Solubility: To be determined

Shelf Life: >2 years if stored properly

Drug Formulation: To be determined

Stock Solution Storage: 0 - 4 C for short term (days to weeks), or -20 C for long term (months).

HS Tariff Code: 2934.99.9001

Preparing Stock Solutions

The following data is based on the product molecular weight 450.58 Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.

Recalculate based on batch purity %
Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
1 mM 1.15 mL 5.76 mL 11.51 mL
5 mM 0.23 mL 1.15 mL 2.3 mL
10 mM 0.12 mL 0.58 mL 1.15 mL
50 mM 0.02 mL 0.12 mL 0.23 mL

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