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7-Nitro- and 7-aminosubstituted spiropyrans of 1-benzothieno[3,2-b]pyrrole

✍ Scribed by Valerii Z. Shirinian; Alexey A. Shimkin; Arthur K. Mailian; Dmitry V. Tsyganov; Leonid D. Popov; Mikhail M. Krayushkin

No coin nor oath required. For personal study only.

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