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

Hodoodo CAT#: H597445

CAS#: 90614-49-6

Description: Diprotin B is an inhibitor for dipeptidyl peptidase IV.


Chemical Structure

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Diprotin B
CAS# 90614-49-6

Theoretical Analysis

Hodoodo Cat#: H597445
Name: Diprotin B
CAS#: 90614-49-6
Chemical Formula: C16H29N3O4
Exact Mass: 327.22
Molecular Weight: 327.425
Elemental Analysis: C, 58.69; H, 8.93; N, 12.83; O, 19.55

Price and Availability

Size Price Availability Quantity
5mg USD 200 2 weeks
25mg USD 340 2 weeks
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Synonym: Diprotin B;

IUPAC/Chemical Name: L-valyl-L-prolyl-L-leucine

InChi Key: NHXZRXLFOBFMDM-AVGNSLFASA-N

InChi Code: InChI=1S/C16H29N3O4/c1-9(2)8-11(16(22)23)18-14(20)12-6-5-7-19(12)15(21)13(17)10(3)4/h9-13H,5-8,17H2,1-4H3,(H,18,20)(H,22,23)/t11-,12-,13-/m0/s1

SMILES Code: CC(C)C[C@@H](C(O)=O)NC([C@H]1N(C([C@H](C(C)C)N)=O)CCC1)=O

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: Soluble in DMSO

Shelf Life: >3 years if stored properly

Drug Formulation: This drug may be formulated in DMSO

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

HS Tariff Code: 2934.99.03.00

More Info:

Biological target:
In vitro activity:
In vivo activity:

Preparing Stock Solutions

The following data is based on the product molecular weight 327.43 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
Formulation protocol:
In vitro protocol:
In vivo protocol:

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1: Rahfeld J, Schierhorn M, Hartrodt B, Neubert K, Heins J. Are diprotin A (Ile-Pro-Ile) and diprotin B (Val-Pro-Leu) inhibitors or substrates of dipeptidyl peptidase IV? Biochim Biophys Acta. 1991 Jan 29;1076(2):314-6. PubMed PMID: 1671823.

2: Hiramatsu H, Kyono K, Yamamoto A, Saeki K, Shima H, Sugiyama S, Inaka K, Shimizu R. Crystal structures of human dipeptidyl peptidase IV in its apo and diprotin B-complexed forms. Acta Biochim Biophys Sin (Shanghai). 2007 May;39(5):335-43. PubMed PMID: 17492130.

3: Umezawa H, Aoyagi T, Ogawa K, Naganawa H, Hamada M, Takeuchi T. Diprotins A and B, inhibitors of dipeptidyl aminopeptidase IV, produced by bacteria. J Antibiot (Tokyo). 1984 Apr;37(4):422-5. PubMed PMID: 6427168.

4: Endröczi E, Hepp J, Sasváry M, Walentin S, Lévay G. Dipeptidyl peptidase IV (DP IV) and superoxide dismutase activity in thymus-derived lymphocytes: effects of inhibitory peptides and Zn2+ in vitro. Acta Physiol Hung. 1990;75(1):35-44. PubMed PMID: 1971138.

5: Guionie O, Moallic C, Niamké S, Placier G, Sine JP, Colas B. Identification and primary characterization of specific proteases in the digestive juice of Archachatina ventricosa. Comp Biochem Physiol B Biochem Mol Biol. 2003 Jul;135(3):503-10. PubMed PMID: 12831770.

6: Land CM, Kinsel GR. The mechanism of matrix to analyte proton transfer in clusters of 2,5-dihydroxybenzoic acid and the tripeptide VPL. J Am Soc Mass Spectrom. 2001 Jun;12(6):726-31. PubMed PMID: 11401163.

7: Sedo A, Revoltella RP. Detection of dipeptidyl peptidase IV in glioma C6 and neuroblastoma SK-N-SH cell lines. Biochem Cell Biol. 1995 Jan-Feb;73(1-2):113-5. PubMed PMID: 7662310.

8: Malík R, Vlasicová L, Kadlecová L, Sedo A. Heterogeneity of dipeptidyl peptidase IV from C6 rat glioma cells. Neoplasma. 2000;47(2):96-9. PubMed PMID: 10985474.

9: Yassin FH, Marynick DS. Computational study of matrix-peptide interactions in MALDI mass spectrometry: Interactions of 2,5- and 3,5-dihydroxybenzoic acid with the tripeptide valine-proline-leucine. J Phys Chem A. 2006 Mar 16;110(10):3820-5. PubMed PMID: 16526668.