油菜素甾醇（Brassinosteroids，BR）是一類具有高生理活性的甾體激素，在植物中含量低，所在基體復雜。
油菜素甾醇是最近幾十年來新確認的植物激素，被稱為繼生長素、細胞分裂素、赤霉素、脫落酸、乙烯之后的第六大激素，其他植物激素包括茉莉酸、水楊酸、獨腳金內酯等。
基本信息
油菜素甾醇為甾醇類激素，也是一類環戊烷多氫菲，但其與動物甾體類激素的作用機制不同，不經過細胞核內受體發揮作用，而是通過細胞膜表面受體傳遞信號。油菜素甾醇最早由Michelle于1970年發現。他從油菜花粉中提取出了一種能促進植物莖桿伸長和細胞分裂的高活性物質，將其稱為油菜素（Brassins）。由于很低濃度的油菜素甾醇就可以強烈誘導生長和分化，并且通過進一步的對擬南芥（Arabidopsis thaliana）的分子遺傳學研究，證明油菜素甾醇是一種植物激素。
穩定同位素標記油菜素類固醇
穩定同位素標記油菜素類固醇
| 貨號 | 英文品名 | 英文品名 | CAS |
| SCSI-323123 | [D3]BRASSINOLIDE(D-BI) [[26-D3] (22R,23R,24S)-2α,3α,22,23-tetrahydroxy-24-methyl-B-homo-7-oxa-5α-cholestan-6-one] | [D3]BRASSINOLIDE(D-BI) [[26-D3] (22R,23R,24S)-2α,3α,22,23-tetrahydroxy-24-methyl-B-homo-7-oxa-5α-cholestan-6-one] | 461670-12-2 |
| SCSI-323124 | [D3]EPIBRASSINOLIDE(D-EBI) [[D3]24-epibrassinolide, [26-D3],(22R,23R,24R)-2α,3α,22,23-tetrahydroxy-24-methyl-B-homo-7-oxa-5α-cholestane-6-one] | [D3]EPIBRASSINOLIDE(D-EBI) [[D3]24-epibrassinolide, [26-D3],(22R,23R,24R)-2α,3α,22,23-tetrahydroxy-24-methyl-B-homo-7-oxa-5α-cholestane-6-one] | 1316216-51-9 |
| SCSI-323125 | [D3]BRASSINONE (D-NBk) [[D3] 28-norcastasterone, [26-D3] (22R,23R)- 2α,3α,22,23-tetrahydroxy-5α-cholestan-6-one] | [D3]BRASSINONE (D-NBk) [[D3] 28-norcastasterone, [26-D3] (22R,23R)- 2α,3α,22,23-tetrahydroxy-5α-cholestan-6-one] | 1632494-67-7 |
| SCSI-323126 | [D3]CASTASTERONE(D-Bk) [[26-D3] (22R,23R,24S)-2α,3α,22,23-tetrahydroxy-24-methyl-5α-cholestan-6-one] | [D3]CASTASTERONE(D-Bk) [[26-D3] (22R,23R,24S)-2α,3α,22,23-tetrahydroxy-24-methyl-5α-cholestan-6-one] | 461670-13-3 |
| SCSI-323127 | [D3]EPICASTASTERONE (D-EBk) [[D3] 24-epicastasterone, [26-D3] (22R,23R,24R)-2α,3α,22,23-tetrahydroxy-24-methyl-5α-cholestane-6-one] | [D3]EPICASTASTERONE (D-EBk) [[D3] 24-epicastasterone, [26-D3] (22R,23R,24R)-2α,3α,22,23-tetrahydroxy-24-methyl-5α-cholestane-6-one] | 1316216-47-3 |
| SCSI-323128 | [D3]CAMPESTANOL (D-CAMP) [[26-D3](24R)-3-β-hydroxy-24-methyl-5α-cholestane] | [D3]CAMPESTANOL (D-CAMP) [[26-D3](24R)-3-β-hydroxy-24-methyl-5α-cholestane] | 1400878-56-9 |
| SCSI-323129 | [D3]CATHASTERONE (D-CATH) [[22,26,26-D3](22S,24R)-3-β,22-dihydroxy-24-methyl-5α-cholestane-6-one] | [D3]CATHASTERONE (D-CATH) [[22,26,26-D3](22S,24R)-3-β,22-dihydroxy-24-methyl-5α-cholestane-6-one] | 1380235-47-1 |
| SCSI-323130 | [D3]6-DEOXO-24-EPICASTASTERONE (D-EBd) [[26-D3](22R,23R,24R)-2α,3α,22,23-tetrahydroxy-24-methyl-5α-cholestane] | [D3]6-DEOXO-24-EPICASTASTERONE (D-EBd) [[26-D3](22R,23R,24R)-2α,3α,22,23-tetrahydroxy-24-methyl-5α-cholestane] | 1402912-18-8 |
| SCSI-323131 | [D3]6-DEOXOCASTASTERONE (D-6deoxoCS) [[26-D3](22R,23R,24R)-2α,3α,22,23-tetrahydroxy-24-methyl-5α-cholestane | [D3]6-DEOXOCASTASTERONE (D-6deoxoCS) [[26-D3](22R,23R,24R)-2α,3α,22,23-tetrahydroxy-24-methyl-5α-cholestane | 1402912-18-8 |
| SCSI-323132 | [D3]6-DEOXYTYPHASTEROL (2H-6deoxoTY) [[26-D3](3α,5α22R,23R,24S)-Ergostane-3,22,23-triol | [D3]6-DEOXYTYPHASTEROL (2H-6deoxoTY) [[26-D3](3α,5α22R,23R,24S)-Ergostane-3,22,23-triol | 1449510-51-3 |
| SCSI-323133 | [D3]6-DEOXYTYPHASTEROL (D-DECATH) [[26-D3](22S,24R)-3-β,22-dihydroxy-24-methyl-5α-cholestane] | [D3]6-DEOXYTYPHASTEROL (D-DECATH) [[26-D3](22S,24R)-3-β,22-dihydroxy-24-methyl-5α-cholestane] | 1449510-51-3 |
| SCSI-323134 | [D3]CAMPESTEROL (D-CR) [[26-D3](3S,8S,9S10R14S,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] | [D3]CAMPESTEROL (D-CR) [[26-D3](3S,8S,9S10R14S,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] | 1400878-52-5 |
| SCSI-323135 | [D3]NORBRASSINOLIDE (D-NBI) [[D3] 28-norbrassinolide, [26-D3] (22R,23R)- 2α,3α,22,23-tetrahydroxy-B-homo-7-oxa-5α-cholestan-6-one] | [D3]NORBRASSINOLIDE (D-NBI) [[D3] 28-norbrassinolide, [26-D3] (22R,23R)- 2α,3α,22,23-tetrahydroxy-B-homo-7-oxa-5α-cholestan-6-one] | 313350-52-6 |
| SCSI-323136 | [D3]TYPHASTEROL (D-TY) [[26-D3] 3,22,23-trihydroxy-(3α,5α,22R,23R,24S)-Ergostan-6-one] | [D3]TYPHASTEROL (D-TY) [[26-D3] 3,22,23-trihydroxy-(3α,5α,22R,23R,24S)-Ergostan-6-one] | 461670-14-4 |
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