QS-21

Catalog Number	ACM141256044-1
CAS	141256-04-4
Structure
Description	QS-21 is an immunostimulating saponin that can be used as an effective vaccine adjuvant. QS-21 stimulates Th2 humoral and Th1 cell-mediated immune responses by acting on antigen-presenting cells (APCs) and T cells. QS-21 activates the NLRP3 inflammasome and subsequently releases caspase-1-dependent cytokines, IL-1β and IL-18.
Synonyms	Saponin QA 21V1; QS-21
Molecular Weight	1990.13
Molecular Formula	C92H148O46
Canonical SMILES	O=CC1(C)C(OC2OC(C(=O)O)C(O)C(OC3OCC(O)C(O)C3O)C2OC4OC(CO)C(O)C(O)C4O)CCC5(C)C6CC=C7C8CC(C)(C)CCC8(C(=O)OC9OC(C)C(OC(=O)CC(O)CC(OC(=O)CC(O)CC(OC%10OC(CO)C(O)C%10O)C(C)CC)C(C)CC)C(O)C9OC%11OC(C)C(OC%12OCC(O)C(OC%13OCC(O)(CO)C%13O)C%12O)C(O)C%11O)C(O)CC7(C)C6(C)CCC15
InChI	1S/C92H148O46/c1-13-36(3)45(126-54(101)25-41(98)24-46(37(4)14-2)127-80-64(111)58(105)48(30-94)128-80)23-40(97)26-55(102)132-70-39(6)125-82(73(67(70)114)136-79-66(113)61(108)69(38(5)124-79)133-78-63(110)59(106)49(32-122-78)130-84-75(116)91(120,34-96)35-123-84)138-85(119)92-22-21-86(7,8)27-43(92)42-15-16-51-87(9)19-18-53(88(10,33-95)50(87)17-20-89(51,11)90(42,12)28-52(92)100)131-83-74(137-81-65(112)60(107)57(104)47(29-93)129-81)71(68(115)72(135-83)76(117)118)134-77-62(109)56(103)44(99)31-121-77/h15,33,36-41,43-53,56-75,77-84,93-94,96-100,103-116,120H,13-14,16-32,34-35H2,1-12H3,(H,117,118)/t36?,37?,38-,39+,40?,41?,43-,44+,45?,46?,47+,48-,49+,50+,51+,52+,53-,56-,57-,58-,59-,60-,61-,62+,63+,64+,65+,66+,67-,68-,69-,70-,71-,72-,73+,74+,75-,77-,78-,79-,80+,81+,82-,83+,84-,87-,88-,89+,90+,91+,92+/m0/s1
InChI Key	XYVMMKXMQBIPIQ-JOMHPNDBSA-N
Purity	>90%
Density	1.52±0.1 g/cm3 (20 ℃ 760 Torr)
Solubility	Very slightly soluble (0.2 g/L) (25 ºC)
Storage	Powder: -20℃(3 years) In solvent -80℃(6 months), -20℃(1 month)
Color	White to light yellow
In Vivo Studies	Studies on mouse APCs (DCs and macrophages) indicate that QS-21 is an activator of the NLRP3 inflammasome and leads to the subsequent release of caspase-1-dependent proinflammatory cytokines I1-1β/I1-18, thereby promoting Th 17 cells mature or drive INF-γ-mediated Th1 responses, respectively.
Physical State	Solid
Solvent	Chloroform, Dichloromethane, Ethyl Acetate, DMSO, Acetone, etc.
Source	The roots of Platycodon grandiflorum.
Structure Type	Triterpenes
Target	NLRP3 inflammasome

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QS-21 (141256-04-4)

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