Daniel Lowe

(2R,5R)-(-)-trans-2,5-Dimethylpyrrolidine

2

**[Original report](https://bitbucket.org/dan2097/opsin/issue/73) by Alex Clark (Bitbucket: [aclarkxyz](https://bitbucket.org/aclarkxyz), GitHub: [aclarkxyz](https://github.com/aclarkxyz)).** ---------------------------------------- ... is hating on the trans. Take that out and it works.

**[Original report](https://bitbucket.org/dan2097/opsin/issue/75) by Alex Clark (Bitbucket: [aclarkxyz](https://bitbucket.org/aclarkxyz), GitHub: [aclarkxyz](https://github.com/aclarkxyz)).** ----------------------------------------

**[Original report](https://bitbucket.org/dan2097/opsin/issue/74) by Alex Clark (Bitbucket: [aclarkxyz](https://bitbucket.org/aclarkxyz), GitHub: [aclarkxyz](https://github.com/aclarkxyz)).** ---------------------------------------- [F]C12[F].[F]C13[F].[F]C21[F].[F]C32[F].[F]C23[F].[F]C32[F].[F]2.O2N3C4=O.O=C2CC1.O=C3CC4

Tributyltin methoxide

1

**[Original report](https://bitbucket.org/dan2097/opsin/issue/70) by Alex Clark (Bitbucket: [aclarkxyz](https://bitbucket.org/aclarkxyz), GitHub: [aclarkxyz](https://github.com/aclarkxyz)).** ---------------------------------------- The "methoxide" is connected to the tin, not an anion.

**[Original report](https://bitbucket.org/dan2097/opsin/issue/59) by Mark Williamson (Bitbucket: [mjw99](https://bitbucket.org/mjw99), GitHub: [mjw99](https://github.com/mjw99)).** ---------------------------------------- Example IUPAC input: dimethyl 4,4'-((14Z,54Z,94Z,134Z)-11H,51H,91H,131H-7,15-diaza-1,5,13(1,4),9(4,1)-tetratriazola-3,11(1,4)-dibenzenacyclohexadecaphane-7,15-dicarbonyl)dibenzoate More details about phane nomenclature: http://www.sbcs.qmul.ac.uk/iupac/phane/

Carotenoid nomenclature

1

**[Original report](https://bitbucket.org/dan2097/opsin/issue/52) by Anonymous.** ---------------------------------------- It seems carotenoid nomenclature is not supported (http://www.sbcs.qmul.ac.uk/iupac/carot/index.html). It would be nice if it were (or is that document deprecated?).

Locanted amides should work with disulfonic acids

1

**[Original report](https://bitbucket.org/dan2097/opsin/issue/43) by Daniel Lowe (Bitbucket: [dan2097](https://bitbucket.org/dan2097), GitHub: [dan2097](https://github.com/dan2097)).** ---------------------------------------- e.g. Benzene-1,4-disulfonic acid 1-(ethylamide) 4-(propylamide)

**[Original report](https://bitbucket.org/dan2097/opsin/issue/41) by Daniel Lowe (Bitbucket: [dan2097](https://bitbucket.org/dan2097), GitHub: [dan2097](https://github.com/dan2097)).** ---------------------------------------- Currently alpha/beta stereo are treated like other stereochemistry terms and applied to the stereoparent after it has been constructed. Alpha/beta...

**[Original report](https://bitbucket.org/dan2097/opsin/issue/38) by Daniel Lowe (Bitbucket: [dan2097](https://bitbucket.org/dan2097), GitHub: [dan2097](https://github.com/dan2097)).** ---------------------------------------- acetophenone has 2,2',3',4',5',6' locants. In many names the primed locants are treated as unprimed and if required the 2 position...

Mancude rings refuse to fuse?

1

**[Original report](https://bitbucket.org/dan2097/opsin/issue/30) by Steve Chapman (Bitbucket: [isomerdesign](https://bitbucket.org/isomerdesign), ).** ---------------------------------------- I tried to construct this structure: [11,12-dihydroindolo[2,3-a]carbazole](http://opsin.ch.cam.ac.uk/opsin/11,12-dihydroindolo[2,3-a]carbazole.png), by instead approaching the name as [11,12-dihydrobenzo[2,1-b:3,4-b']diindole](http://opsin.ch.cam.ac.uk/opsin/11,12-dihydrobenzo[2,1-b:3,4-b']diindole.png). That does in fact work, but the...