Suzuki DS-10 and DS-10X (from Silvergrain) are possibly better substitutes.
Suzuki DS-10 Fine grain developer
Water 700 ml
Sodium sulfite (anh) 75 g
Triethanolamins (99%) 10 ml
Ascorbic acid 8 g
Dimezone S 150 mg
Salicylic acid 1 g
Boric acid 4 g
Water to make 1 l
Target pH (at 25C) = 8.00±0.05
Replenish by bleed method at 120ml per 80 sq. in. of film processed.
Ref: Suzuki, R., Seventy-six years of D-76”, silvergrain.org Technical notes
http://web.archive.org/web/20070720...lvergrain_formulae#DS-10_Fine_grain_developer
Variation (Suzuki DS-10X)
Xtol- Mytol substitute
The formula for Xtol was published in a Photo Techniques article by the two people who formulated it. It contained no chelating agent. Later Kodak added one which improved its stability. Sudden death is caused by the Fenton reaction which is catalysed by iron and coppr impurities in the water and also in the chemicals used to make Xtol. It can be very rapid causing the developer to lose activity in a few hours. The following developer contains two chelating agents salicylic acid and triethanolamine.
DS-10X Fine Grain Developer by Ryuji Suzuki
Dimezone S 150 mg
Ascorbic acid 8.0 g
Boric acid 2.0 g
Salicylic acid 1.0 g
Sodium sulfite (anh) 75 g
Triethanolamine 10.0 ml
Distilled water to male 1 l
Salicylic acid can be obtained from many pharmacies and is not expensive. All the other ingredients are available from companies that sell photo chemicals. Development times are comparable to those of Xtol. I have used this developer and it is very good producing results very similar to Xtol. Doubling the amount of boric acid will yield even finer gain. This version DS-10 requires a 20% increase in development times.
Ref: APUG (Koch)