. 2017 Dec 14;2(12):8969–8981. doi: 10.1021/acsomega.7b01454

Table 1. List of Coformers Used in Solid Form Screening, Their pK_a Values, and ΔpK_a Relative to CFZ^a.

coformers	pK_a	ΔpK_a^a	abbreviation
hydrochloric acid	<−6	14.511	HCl
sulfuric acid	–3	11.511	Sul
nitric acid	–1.3	10.211	Nit
oxalic acid	1.27	7.241	Oxa
phosphoric acid	2.12	6.391	Pho
citric acid	3.1	5.411	Cit
formic acid	3.75	4.761	For
acetic acid	4.76	3.751	Ace

pK_a CFZ taken as 8.511, as determined at 37 °C.²⁹

Table 1. List of Coformers Used in Solid Form Screening, Their pKa Values, and ΔpKa Relative to CFZa.