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Merck
CN

C6303

Sigma-Aldrich

Calphostin C

From microbial (Cladosporium cladosporioides), ≥90% (HPLC), protein kinase C inhibitor, powder

Synonym(s):

UCN-1028c

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About This Item

Empirical Formula (Hill Notation):
C44H38O14
CAS Number:
121263-19-2
Molecular Weight:
790.76
MDL number:
MFCD00133155
UNSPSC Code:
12352200
PubChem Substance ID:
24892857
NACRES:
NA.77

Key Documents

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Product Name

Calphostin C from Cladosporium cladosporioides, ≥90% (HPLC), powder

biological source

microbial (Cladosporium cladosporioides)

Quality Level

200

Assay

≥90% (HPLC)

form

powder

color

red to brown

solubility

DMF: 1 mg/mL
DMSO: 1 mg/mL
ethanol: 1 mg/mL

storage temp.

−20°C

SMILES string

COc1cc(O)c2C(=O)C(OC)=C(CC(C)OC(=O)Oc3ccc(O)cc3)c4c5C(CC(C)OC(=O)c6ccccc6)=C(OC)C(=O)c7c(O)cc(OC)c(c57)c1c24

InChI

1S/C44H38O14/c1-20(56-43(50)22-10-8-7-9-11-22)16-25-31-32-26(17-21(2)57-44(51)58-24-14-12-23(45)13-15-24)42(55-6)40(49)34-28(47)19-30(53-4)36(38(32)34)35-29(52-3)18-27(46)33(37(31)35)39(48)41(25)54-5/h7-15,18-21,45-47H,16-17H2,1-6H3

InChI key

SRJYZPCBWDVSGO-UHFFFAOYSA-N

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Biochem/physiol Actions

Highly specific inhibitor of protein kinase C (IC50 = 50 nM); requires light for activation. At higher concentrations (100 nM or greater), it has been shown to inhibit cell proliferation and induce apoptosis in vitro.

Features and Benefits

This compound is featured on the Phospholipase D and PKC pages of the Handbook of Receptor Classification and Signal Transduction. To browse other handbook pages, click here.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
SLCG8812
SLCD8411
SLBX4438
SLBK1658V
SLBB3884V

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H Ikemoto et al.
Journal of neurosurgery, 83(6), 1008-1016 (1995-12-01)
Calphostin C acts at the regulatory domain as a highly selective inhibitor of protein kinase C (PKC), and staurosporine acts at the catalytic domain as a nonspecific PKC inhibitor. The authors investigated the capacity of calphostin C and staurosporine to
M Begemann et al.
Anticancer research, 18(5A), 3139-3152 (1998-12-22)
Protein kinase C (PKC) is a central component in signal transduction and growth control and might be an appropriate target for the chemotherapy of human brain tumors. This study demonstrates that the staurosporine derivative Ro 31-8220, a potent PKC inhibitor
T Tamaoki et al.
Bio/technology (Nature Publishing Company), 8(8), 732-735 (1990-08-01)
Potent and specific inhibitors of protein kinase C have been found in streptomyces and fungi: Staurosporine, an alkaloid from Streptomyces sp., is the most potent inhibitor of protein kinases with an IC50 in the nanomolar range. UCN-01 (7-hydroxy staurosporine), isolated
R F Bruns et al.
Biochemical and biophysical research communications, 176(1), 288-293 (1991-04-15)
Calphostin C, a secondary metabolite of the fungus Cladosporium cladosporioides, inhibits protein kinase C by competing at the binding site for diacylglycerol and phorbol esters. Calphostin C is a polycyclic hydrocarbon with strong absorbance in the visible and ultraviolet ranges.
Huibin Huang et al.
Journal of cellular biochemistry, 118(10), 3444-3451 (2017-03-23)
Our previous study showed that highly iodinated thyroglobulin (TG) inhibited thyroid transcription factor-1 (TTF-1) and paired box gene 8 (PAX8) expression, but the potential mechanism remains unclear. In this study, we constructed a thyroid follicle model in vitro to mimic
View All Related Papers

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