2023: A year of accomplishments for the 13 Science Citation Index Expanded- and Emerging Sources Citation Index-indexed journals.

In 2023, Baishideng Publishing Group () routinely published 47 open-access journals, including 46 English-language journals and 1 Chinese-language journal. Our successes were accomplished through the collective dedicated efforts of staffs, Editorial Board Members, and Peer Reviewers. Among these 47 journals, 7 are included in the Science Citation Index Expanded (SCIE) and 6 in the Emerging Sources Citation Index (ESCI).

Safety and immunogenicity of the SARS-CoV-2 ARCoV mRNA vaccine in Chinese adults: a randomised, double-blind, placebo-controlled, phase 1 trial.

Background: Safe and effective vaccines are urgently needed to end the COVID-19 pandemic caused by SARS-CoV-2 infection. We aimed to assess the preliminary safety, tolerability, and immunogenicity of an mRNA vaccine ARCoV, which encodes the SARS-CoV-2 spike protein receptor-binding domain (RBD).

Methods: This single centre, double-blind, randomised, placebo-controlled, dose-escalation, phase 1 trial of ARCoV was conducted at Shulan (Hangzhou) hospital in Hangzhou, Zhejiang province, China.

6-[(E)-2-Phenyl-vin-yl]-1H-indole.

The title compound, C(16)H(13)N, is essentially planar [maximum deviation from the least-squares plane = 0.081 (3) Å], with a dihedral angle of 1.65 (13)° between the planes of the indole and benzene rings.

(5-Meth-oxy-1H-indol-3-yl)acetonitrile.

In the title compound, C(11)H(10)N(2)O, the O atom and the C atom of the methyl-ene group deviate only slightly [0.029 (3) and 0.055 (3) Å, respectively] from the approximately planar ring system (r.

3-[(E)-2-Phenyl-ethen-yl]-1H-indole-6-carbonitrile.

In the title compound, C(17)H(12)N(2), the inter-planar angle between the indole mean plane [max.deviation 0.030 (1) Å] and the phenyl ring is 24.

2-(7-Methyl-1H-indol-3-yl)acetonitrile.

In the title compound, C(11)H(10)N(2), the carbonitrile group is twisted away from the indole plane [C(cy)-C(me)-C(ar)-C(ar) = 66.6 (2)°; cy = cyanide, me = methyl-ene and ar = aromatic]. In the crystal, N-H⋯N hydrogen bonds link the mol-ecules into C(7) chains propagating in the [001] direction.

6-(1H-Tetra-zol-5-yl)-1H-indole monohydrate.

In the title compound, C(9)H(7)N(5)·H(2)O, the tetra-zole ring forms a dihedral angle of 1.82 (1)° with the mean plane of the indole fragment. In the crystal, mol-ecules are linked by inter-molecular O-H⋯N, N-H⋯O and N-H⋯N hydrogen bonds into a two-dimensional network parallel to (100).

4-(1H-Tetra-zol-5-yl)-1H-indole.

There are two mol-ecules with similar configurations in the asymmetric unit of the title compound, C(9)H(7)N(5), which are linked by inter-molecular N-H⋯N hydrogen bonds into chains with graph-set motif C(2) (2)(8) along the b axis. The indole core has the expected planar geometry in the two mol-ecules, with a maximum deviation of 0.008 (8) Å from the least-squares plane defined by the nine constituent atoms, and the dihedral angles between the indole and tetra-zole rings are similar [42.