Brassinosteroids (BRs) are a group (over 70) of steroid-like compounds. The first BR, brassinolide, was isolated from rape pollen. BRs were found to stimulate stem growth, inhibit root growth, promote xylem differentiation and retard leaf abscission. Definitive proof that BRs function as plant hormones came from evidence that photomorphogenic mutants det2 and cpd were apparently blocked in the BR biosynthetic pathway, and that exogenous BR would rescue these mutants.

BRASSINONE(NBk) [28-norcastasterone, (22R,23R)-2α,3α,22,23-tetrahydroxy-5α-cholestan-6-one]

MW 450.66, crystalline; purity >98% (HPLC)
S:26, 36; CAS: 83464-85-1; C27H46O5
	015 5631	1	mg
	015 5632	2	mg
	015 5633	5	mg

CAMPESTANOL (CAMP) [ (24R)-3-β-hydroxy-24-methyl-5α-cholestane]

MW 402.71; crystalline; purity > 90% ( HPLC )
S:26, 36; CAS: 474-60-2; C28H50O
	015 6781	100	µg
	015 6782	200	µg
	015 6783	500	µg

6-OXOCAMPESTANOL (OCAMP) [ (24R)-3-β-hydroxy-24-methyl-5α-cholestane-6-one]

MW 416.69; crystalline; purity > 90% ( HPLC )
S:26, 36; CAS: 168113-32-4; C28H48O2
	015 6791	100	µg
	015 6792	200	µg
	015 6793	500	µg

CAMPESTEROL (CR) [3S,8S,9S,10R,13R,14S,17R)-17-[(2R,5R)-5,6-dimethylheptan-2-yl]-10,13-dimethyl-2,3,4,7,8,9,11,12,14, 15,16,17-dodecahydro-1H-cyclopentaphenanthren-3-ol]

MW 400.69; crystalline; purity > 98% ( HPLC )
S:26, 36; CAS: NONE; C28H48O
	015 6921	100	µg
	015 6922	200	µg
	015 6923	500	µg

CASTASTERONE (Bk) [ (22R,23R,24S)-2α,3α,22,23-tetrahydroxy-24-methyl-5α-cholestan-6-one]

MW 464.69; crystalline; purity > 95% ( HPLC )
S:26, 36; CAS: 80736-41-0; C28H48O5
	015 6651	1	mg
	015 6652	2	mg
	015 6653	5	mg

CATHASTERONE (CATH) [ (22S,24R)-3-β,22-dihydroxy-24-methyl-5α-cholestane-6-one]

MW 432.69; crystalline; purity > 95% ( HPLC )
S:26, 36; CAS: 168146-23-4; C28H48O3
	015 6761	100	µg
	015 6762	200	µg
	015 6763	500	µg

6-DEOXOCATHASTERONE (DECATH) [ (22S,24R)-3-β,22-dihydroxy-24-methyl-5α-cholestane]

MW 418.71; crystalline; purity > 90% ( HPLC )
S:26, 36; CAS: 198416-73-8; C28H50O2
	015 6771	100	µg
	015 6772	200	µg
	015 6773	500	µg

EPISECASTEROL [(22R,23R,24S)-5α,22,23-dihydroxy- ergost-2-en-6-one]

MW 430.68; crystalline; purity > 95% ( HPLC )
S:26, 36; CAS: NONE; C28H46O3
	015 6671	1	mg
	015 6672	2	mg
	015 6673	5	mg

ERGOSTEROL (ERG) [5,7,22-Ergostatrien-3β-ol, provitamin D₂]

MW 396.66, crystalline; purity >95% (HPLC)
S:26, 36; CAS: 57-87-4; C28H44O
	015 5731	5	g
	015 5732	25	g
	015 5733	100	g

EPIBRASSINOLIDE (EBI) [24-epibrassinolide, (22R,23R,24R)-2α,3α,22,23-tetrahydroxy-24-methyl-B-homo-7-oxa-5α-cholestane-6-one]

MW 480.69,crystalline; purity >98% (HPLC)
S:26, 36; CAS: 78821-43-9; C28H48O6
	015 0201	5	mg
	015 0202	10	mg
	015 0203	50	mg

TRIS-EPIBRASSINOLIDE(TEBI) [(22S,23S,24R)-2α,3α,22,23-tetrahydroxy-24-methyl-B-homo-7-oxa-5α-cholestane-6-one]

MW 480.69, crystalline; purity >98% (HPLC)
S:26, 36; CAS: 78821-42-8; C28H48O6
	015 5681	1	mg
	015 5682	2	mg
	015 5683	5	mg

EPICASTASTERONE (EBk) [24-epicastasterone, (22R,23R,24R)-2α,3α,22,23-tetrahydroxy-24-methyl-5α-cholestane-6-one]

MW 464.69,, crystalline: 241-245 oC, purity >98% (HPLC)
S:26, 36; CAS: 72050-71-6; C28H48O5
	015 0901	1	mg
	015 0902	2	mg
	015 0903	5	mg

6-DEOXOCASTASTERONE (6deoxoCS) [(22R,23R,24R)-2α,3α,22,23-tetrahydroxy-24-methyl-5α-cholestane]

MW 450.71; crystalline; purity > 98% ( HPLC )
S:26, 36; CAS: 87833-54-3; C28H50O4
	015 7511	100	µg
	015 7512	200	µg
	015 7513	500	µg

TRIS-EPICASTASTERONE(TEBk) [(22S,23S,24R)-2α,3α,22,23-tetrahydroxy-24-methyl-5α-cholestane-6-one]

MW 464.69, crystalline; purity >98% (HPLC)
S:26, 36; CAS: 72050-69-2; C28H48O5
	015 5691	1	mg
	015 5692	2	mg
	015 5693	5	mg

23,24-TRIS-EPICASTASTERONE (TECs) [(22,23,24R)-2β,3β,22,23-tetrahydroxy-24-methyl-5α-cholestane-6-one]

MW 464.69, crystalline; purity >98% (HPLC)
S:26, 36; CAS: 375396-54-6; C28H48O5
	015 5821	1	mg
	015 5822	2	mg
	015 5823	5	mg

3,24-DIEPICASTASTERONE (EBk3β) [(22R,23R,24R)-2α,3β,22,23-tetrahydroxy-24-methyl-5α-cholestane-6-one]

MW 464.69, crystalline; purity >98% (HPLC)
S:26, 36; CAS: 121468-16-4; C28H4805
	015 0911	1	mg
	015 0912	2	mg
	015 0913	5	mg

6-DEOXO-24-EPICASTASTERONE (EBd)[(22R,23R,24R)-2α,3α,22,23-tetrahydroxy-24-methyl-5α-cholestane]

MW 450.71, crystalline; purity >98% (HPLC)
S:26, 36; CAS: 169869-41-4; C28H50O4
	015 0921	1	mg
	015 0922	2	mg
	015 0923	5	mg

HOMOCASTASTERONE [(22R,23R,24S)-2α,3α,22,23-tetrahydroxy--24ethyl-5α-cholestan-6-one]

MW 478.72, crystalline; purity >95% (HPLC)
S:26, 36; CAS: 83509-42-6; C29H50O5
	015 6011	1	mg
	015 6012	2	mg
	015 6013	5	mg

HOMOBRASSINOLIDE (HBI) [(22R,23R,24S)-2α,3α,22,23-tetrahydroxy-24-ethyl-B-homo-7-oxa-5α-cholestan-6-one]

MW 494.72, crystalline; purity >95% (HPLC)
S:26, 36; CAS: 74174-44-0; C29H50O6
	015 6021	1	mg
	015 6022	2	mg
	015 6023	5	mg

NORBRASSINOLIDE (NBI) [28-norbrassinolide, (22R,23R)-2α,3α,22,23-tetrahydroxy-B-homo-7-oxa-5α-cholestan-6-one]

MW 466.66, crystalline; purity >98% (HPLC)
S:26, 36; CAS: 77736-43-7; C27H46O6
	015 5621	1	mg
	015 5622	2	mg
	015 5623	5	mg

6-DEOXO-28-NORCASTASTERONE(NBd) [(22R,23R)-2α,3α,22,23-tetrahydroxy-5α-cholestane]

MW 436.68, crystalline; purity >98% (HPLC)
S:26, 36; CAS: 169624-26-4; C27H48O4
	015 5641	1	mg
	015 5642	2	mg
	015 5643	5	mg

NORTEASTERONE (NTEA)[ (22R,23R)-3β-5α,3,22,23-trihydroxy- cholestan-6-one]

MW 434.67; crystalline; purity > 95% ( HPLC )
S:26, 36; CAS: 105319-58-2; C27H46O4
	015 6661	100	µg
	015 6662	200	µg
	015 6663	500	µg

SS-EPIBRASSINOLIDE[(22S,23S)-2α,3α,22,23-tetrahydroxy-7-oxa-B-homo-5α-ergostan-6-one]

MW 480.69, crystalline; purity >95% (HPLC)
S:26, 36; CAS: NONE; C28H48O6
	015 6031	1	mg
	015 6032	2	mg
	015 6033	5	mg

SS-EPICASTASTERONE [(22S,23S,24R)-2α,3α,22,23-tetrahydroxy-24-methyl-5α-cholestan-6-one]

MW 464.69, crystalline; purity >95% (HPLC)
S:26, 36; CAS: NONE; C28H48O5
	015 6041	1	mg
	015 6042	2	mg
	015 6043	5	mg

SS-HOMOCASTASTERONE [(22S,23S)-2α,3α,22,23-tetrahydroxy--24ethyl-5α-cholestan-6-one]

MW 478.72, crystalline; purity >95% (HPLC)
S:26, 36; CAS: 80483-89-2; C29H50O5
	015 6051	1	mg
	015 6052	2	mg
	015 6053	5	mg

SS-HOMOBRASSINOLIDE [(22S,23S)-2α,3α,22,23-tetrahydroxy-24-ethyl-5α-cholestan-6-one]

MW 494.72, crystalline; purity >95% (HPLC)
S:26, 36; CAS: 74174-44-0; C29H50O6
	015 6061	1	mg
	015 6062	2	mg
	015 6063	5	mg

BRASSICASTEROL [(22E)-Ergosta-5,22dien-3-β-ol]

MW 398.68, crystalline; purity >95% (HPLC)
S:26, 36; CAS: 474-67-9; C28H46O
	015 6071	1	mg
	015 6072	2	mg
	015 6073	5	mg

BRASSICASTEROL 3-OAc [(22E)-Ergosta-5,22dien-3-β-ol Acetate]

MW 440.72, crystalline; purity >95% (HPLC)
S:26, 36; CAS: NONE; C30H48O2
	015 6081	1	mg
	015 6082	2	mg
	015 6083	5	mg

TYPHASTEROL (TY) [(3α,5α,22R,23R,24S)- 3,22,23-trihydroxy-Ergostan-6-one]

MW 448.69; crystalline; purity > 90% ( HPLC )
S:26, 36; CAS: 87734-68-7; C28H48O4
	015 7161	100	µg
	015 7162	200	µg
	015 7163	500	µg

20-HYDROXYECDYSONE [(20R,22R)-2β,3β,14,20,22,25-hexahydroxy-5β-cholest-7-en-6-one]

MW 480.65, crystalline; purity >95% (HPLC)
S:26, 36; CAS: 5289-74-7; C27H44O7
	015 6091	1	mg
	015 6092	2	mg
	015 6093	5	mg

PONASTERONE A[(20R,22R)-2β,3β,14,20,22-pentahydroxy-5β-cholest-7-en-6-one]

MW 464.65, crystalline; purity >95% (HPLC)
S:26, 36; CAS: 13408-56-5; C27H44O6
	015 6101	1	mg
	015 6102	2	mg
	015 6103	5	mg

AJUGASTERONE C [(20R,22R)-2β,3β,11,14,20,22-hexahydroxy-5β-cholest-7-en-6-one]

MW 480.65, crystalline; purity >95% (HPLC)
S:26, 36; CAS: 23044-80-6; C27H44O7
	015 6111	1	mg
	015 6112	2	mg
	015 6113	5	mg