If you are handy with a soldering iron - it'd be possible to make your own.
Many Australian 1084 & Philips 8833 monitors were D23-to-Scart. I made-up my own extra-long cable just to use with an A600 to my television RGB-in. The first thing to acquire is a multi-strand cable then you just have to solder the correct colour-to-pins.
Watch out for assembly locking-collars that are easier to slip over the cable BEFORE you cut back the outer sheath and fan-out the individual core-wires!
Of course, its EASIER to just modify an existing cable, such as one that just lacks the correct connector on one end! That's HALF the work.