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June 12, 2026Zeitschrift für Kristallographie - New Crystal StructuresOpen Access

Crystal structure of isoquinoline-5-sulfonic acid, C ₉ H ₇ NO ₃ S

Yu‐Pei Xia Huahao Li Xingling Zhao

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Key Points

To determine and analyze the crystal structure of isoquinoline-5-sulfonic acid.
Single-crystal X-ray diffraction analysis at 298 K
Monoclinic space group P21/c
Determination of unit cell parameters and refinement statistics.
Unit cell dimensions: a = 8.2605(3) Å, b = 9.9761(4) Å, c = 10.6069(4) Å
Beta angle: β = 104.7590(10)°
Rgt (F) = 0.0349, wR ref (F2) = 0.0939.

Implication

Crystal structure reveals detailed molecular dimensions of isoquinoline-5-sulfonic acid, providing insights into its properties.

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Cite This Study

Xia et al. (2026) studied this question.

synapsesocial.com/papers/6a2f98a0a1cfeec490829b82 https://doi.org/10.1515/ncrs-2026-0204

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Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

1The crystal structure of 1-oxo-3-phenyl-1,2-dihydroisoquinoline-4-carbaldehyde, C <sub>16</sub> H <sub>11</sub> NO <sub>2</sub>Original Research · 2026
2Crystal structure of ethyl 2,7,7-trimethyl-4-(3-methylthiophen-2-yl)-5-oxo-1,4,5,6,7,8-hexahydroquinoline-3-carboxylate, C <sub>20</sub> H <sub>25</sub> NO <sub>3</sub> SOriginal Research · 2026
3The crystal structure of methyl 4-(4-(methanesulfonyl)phenyl)-2,7,7-trimethyl-5-oxo-1,4,5,6,7,8-hexahydroquinoline-3-carboxylate, C <sub>21</sub> H <sub>25</sub> NO <sub>5</sub> SOriginal Research · 2026
4The crystal structure of 5-methyl-3,4-diphenylisoxazole, C <sub>16</sub> H <sub>13</sub> NOOriginal Research · 2026
5Synthesis and crystal structure of 3-(4,5-dihydroisoxazol-3-yl)-2-methyl-4-(methylsulfonyl)benzoic acid, C<sub>12</sub>H<sub>13</sub>NO<sub>5</sub>S2024

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