Zobrazeno 1 - 10
of 16
pro vyhledávání: '"Pratik P. Upadhyay"'
Publikováno v:
CrystEngComm. 24:1795-1802
Nanoindentation studies on two polymorphs of famotidine indicate that the degree of anisotropy of their elastic response is an important indicator of their comparative tabletability.
Publikováno v:
Upadhyay, P P, Mishra, M K, Ramamurty, U & Bond, A D 2021, ' Structure-property correlations in piracetam polytypes ', CrystEngComm, vol. 23, no. 5, pp. 1226-1233 . https://doi.org/10.1039/d0ce01694b
Polymorphs II and III of piracetam exhibit a polytypic relationship comprising identical layers of molecules with different relative arrangements. Polymorph II has an interlayer structure in which the piracetam molecules adopt face-to-face and edge-t
Autor:
Magnus Klarqvist, Emma I Kay, Pratik P. Upadhyay, Xianchan Li, Per Malmberg, Shalini Andersson, Florent Penen, Neda Najafinobar, Michael E. Kurczy, Andrew G. Ewing, Aurélien Thomen, Nhu T. N. Phan
Publikováno v:
ACS Nano
[Image: see text] Mass spectrometry imaging is a field that promises to become a mainstream bioanalysis technology by allowing the combination of single-cell imaging and subcellular quantitative analysis. The frontier of single-cell imaging has advan
Publikováno v:
Chemistry of Natural Compounds. 54:147-152
Acyl- and alkyl-derivatives at the N1 and N4 atoms, respectively, of the indoline alkaloids copsinine (1) and pseudocopsinine (2), which were isolated from the plant Vinca erecta, were synthesized. Alkaloids 1 and 2 reacted with alkyl halides to give
Autor:
Andrew D. Bond, Christian R. Parker, Pratik P. Upadhyay, Jukka Rantanen, Nawin Pudasaini, Stefan U. Hagen
Publikováno v:
Organic Process Research & Development. 21:571-577
Efficient downstream processing of active pharmaceutical ingredients (APIs) can depend strongly on their particulate properties, such as size and shape distributions. Especially in drug products with high API content, needle-like crystal habit of an
Autor:
Sh. M. Adizov, Pratik P. Upadhyay, R. Zh. Kunafiev, P. Kh. Yuldashev, M. M. Mirzaeva, B. Tashkhodzhaev
Publikováno v:
Journal of Structural Chemistry. 57:1619-1626
Indoline alkaloids kopsinilam and kopsinine extracted from the plant Vinca erecta have been studied by X-ray crystallography; mono and double salts of the latter alkaloid also have been examined. Experimentally determined positions of Н atoms sugges
Autor:
Jukka Rantanen, Nawin Pudasaini, Manish Kumar Mishra, Upadrasta Ramamurty, Pratik P. Upadhyay
Publikováno v:
IndraStra Global.
A systematic assessment of key material attributes of active pharmaceutical ingredients (APIs) using minimal material approach is illustrated at the particulate level and bulk level. At a bulk level, flowability improvement of an API through crystal
Publikováno v:
International journal of pharmaceutics. 543(1-2)
Piroxicam crystallises into two polytypes, α1 and α2, with crystal structures that contain identical molecular layers but differ in the way that these layers are stacked. In spite of having close structural similarity, the polytypes have significan
Autor:
Pratik P. Upadhyay, Andrew D. Bond
Publikováno v:
CrystEngComm. 17:5266-5272
Polymorphism of the active pharmaceutical ingredient piroxicam, C15H13N3O4S, is investigated with an aim to clarify the identity and crystallization conditions of the α1 and α2 polymorphs. The structures are polytypic, containing identical 2-dimens
Publikováno v:
Journal of Pharmaceutical Sciences. 101:1843-1851
Relationship between two polymorphs is described to be either enantiotropic or monotropic with transition temperature/transition point (Tt) below the melting point (Tm) of the lower melting form in former case and above the Tm of the higher melting f