Literature DB >> 22719532

Cinnarizinium picrate.

Yanxi Song, C S Chidan Kumar, G B Nethravathi, S Naveen, Hongqi Li.   

Abstract

In the title salt {systematic name: 4-diphenyl-methyl-1-[(E)-3-phenyl-prop-2-en-1-yl]piperazin-1-ium 2,4,6-trinitro-pheno-late), C(26)H(29)N(2) (+)·C(6)H(2)N(3)O(7) (-), the cinnarizinium cation is protonated at the piperazine N atom connected to the styrenylmethyl group; the piperazine ring adopts a distorted chair conformaiton. In the crystal, bifurcated N-H⋯(O,O) hydrogen bonds link the components into two-ion aggregates.

Entities:  

Year:  2012        PMID: 22719532      PMCID: PMC3379334          DOI: 10.1107/S1600536812020764

Source DB:  PubMed          Journal:  Acta Crystallogr Sect E Struct Rep Online        ISSN: 1600-5368


Related literature

For background to the anti-histamine cinnarizine, see: Towse (1980 ▶); Barrett & Zolov (1960 ▶). For related structures, see: Mouillé et al. (1975 ▶); Bertolasi et al. (1980 ▶); Jasinski et al. (2011 ▶). For additional conformational analysis, see: Cremer & Pople (1975 ▶).

Experimental

Crystal data

C26H29N2 +·C6H2N3O7 − M = 597.62 Monoclinic, a = 14.5906 (19) Å b = 12.7720 (17) Å c = 16.441 (2) Å β = 103.114 (2)° V = 2984.0 (7) Å3 Z = 4 Mo Kα radiation μ = 0.10 mm−1 T = 296 K 0.16 × 0.16 × 0.07 mm

Data collection

Bruker APEXII CCD diffractometer Absorption correction: multi-scan (SADABS; Sheldrick, 1997 ▶) T min = 0.985, T max = 0.993 15196 measured reflections 5262 independent reflections 3181 reflections with I > 2σ(I) R int = 0.033

Refinement

R[F 2 > 2σ(F 2)] = 0.051 wR(F 2) = 0.143 S = 1.03 5262 reflections 401 parameters H atoms treated by a mixture of independent and constrained refinement Δρmax = 0.21 e Å−3 Δρmin = −0.17 e Å−3 Data collection: APEX2 (Bruker, 2004 ▶); cell refinement: SAINT (Bruker, 2004 ▶); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008 ▶); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008 ▶); molecular graphics: SHELXTL (Sheldrick, 2008 ▶); software used to prepare material for publication: SHELXTL. Crystal structure: contains datablock(s) global, I. DOI: 10.1107/S1600536812020764/tk5091sup1.cif Structure factors: contains datablock(s) I. DOI: 10.1107/S1600536812020764/tk5091Isup2.hkl Supplementary material file. DOI: 10.1107/S1600536812020764/tk5091Isup3.cml Additional supplementary materials: crystallographic information; 3D view; checkCIF report
C26H29N2+·C6H2N3O7F(000) = 1256
Mr = 597.62Dx = 1.330 Mg m3
Monoclinic, P21/cMelting point = 465–463 K
Hall symbol: -P 2ybcMo Kα radiation, λ = 0.71073 Å
a = 14.5906 (19) ÅCell parameters from 2307 reflections
b = 12.7720 (17) Åθ = 2.3–22.0°
c = 16.441 (2) ŵ = 0.10 mm1
β = 103.114 (2)°T = 296 K
V = 2984.0 (7) Å3Block, yellow
Z = 40.16 × 0.16 × 0.07 mm
Bruker APEXII CCD diffractometer5262 independent reflections
Radiation source: fine-focus sealed tube3181 reflections with I > 2σ(I)
Graphite monochromatorRint = 0.033
φ and ω scansθmax = 25.1°, θmin = 2.0°
Absorption correction: multi-scan (SADABS; Sheldrick, 1997)h = −14→17
Tmin = 0.985, Tmax = 0.993k = −15→15
15196 measured reflectionsl = −19→15
Refinement on F2Primary atom site location: structure-invariant direct methods
Least-squares matrix: fullSecondary atom site location: difference Fourier map
R[F2 > 2σ(F2)] = 0.051Hydrogen site location: inferred from neighbouring sites
wR(F2) = 0.143H atoms treated by a mixture of independent and constrained refinement
S = 1.03w = 1/[σ2(Fo2) + (0.0606P)2 + 0.4273P] where P = (Fo2 + 2Fc2)/3
5262 reflections(Δ/σ)max < 0.001
401 parametersΔρmax = 0.21 e Å3
0 restraintsΔρmin = −0.17 e Å3
Geometry. All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of e.s.d.'s in distances, angles and torsion angles; correlations between e.s.d.'s in cell parameters are only used when they are defined by crystal symmetry. An approximate (isotropic) treatment of cell e.s.d.'s is used for estimating e.s.d.'s involving l.s. planes.
Refinement. Refinement of F2 against ALL reflections. The weighted R-factor wR and goodness of fit S are based on F2, conventional R-factors R are based on F, with F set to zero for negative F2. The threshold expression of F2 > σ(F2) is used only for calculating R-factors(gt) etc. and is not relevant to the choice of reflections for refinement. R-factors based on F2 are statistically about twice as large as those based on F, and R- factors based on ALL data will be even larger.
xyzUiso*/Ueq
C10.52622 (15)1.01467 (17)0.19638 (13)0.0431 (5)
C20.59492 (16)0.93827 (18)0.21939 (14)0.0507 (6)
H20.59110.89160.26190.061*
C30.66912 (17)0.9304 (2)0.18004 (17)0.0616 (7)
H30.71520.87960.19680.074*
C40.67436 (19)0.9977 (2)0.11638 (18)0.0688 (8)
H40.72400.99240.08980.083*
C50.6071 (2)1.0725 (2)0.09190 (16)0.0714 (8)
H50.61071.11750.04830.086*
C60.53323 (18)1.0819 (2)0.13170 (15)0.0596 (7)
H60.48801.13360.11490.072*
C70.44424 (14)1.02478 (16)0.23909 (13)0.0427 (5)
H70.39761.07150.20490.051*
C80.47390 (15)1.07319 (17)0.32545 (13)0.0425 (5)
C90.54277 (16)1.02889 (19)0.38803 (14)0.0535 (6)
H90.57140.96670.37780.064*
C100.56926 (18)1.0761 (2)0.46534 (15)0.0637 (7)
H100.61641.04610.50640.076*
C110.52685 (19)1.1666 (2)0.48211 (16)0.0638 (7)
H110.54471.19790.53440.077*
C120.45798 (19)1.2107 (2)0.42127 (16)0.0666 (7)
H120.42831.27180.43240.080*
C130.43233 (17)1.16465 (18)0.34333 (15)0.0575 (7)
H130.38621.19600.30220.069*
C140.31810 (15)0.92742 (18)0.27987 (13)0.0478 (6)
H14A0.27090.97330.24700.057*
H14B0.33770.95700.33550.057*
C150.27606 (16)0.82031 (18)0.28533 (13)0.0510 (6)
H15A0.32230.77570.32080.061*
H15B0.22230.82640.31060.061*
C160.32487 (15)0.77316 (18)0.15764 (14)0.0507 (6)
H16A0.30260.74850.10080.061*
H16B0.37400.72600.18590.061*
C170.36469 (15)0.88150 (18)0.15634 (13)0.0496 (6)
H17A0.41600.88010.12780.060*
H17B0.31640.92800.12570.060*
C180.20741 (18)0.66271 (18)0.20475 (15)0.0573 (6)
H18A0.25800.61610.23090.069*
H18B0.16090.66300.23850.069*
C190.16375 (17)0.62381 (19)0.11991 (16)0.0589 (7)
H190.10980.65810.09120.071*
C200.19386 (17)0.5462 (2)0.08192 (16)0.0634 (7)
H200.24540.51000.11280.076*
C210.15677 (19)0.5088 (2)−0.00331 (16)0.0634 (7)
C220.0751 (2)0.5494 (2)−0.05376 (18)0.0794 (9)
H220.04090.5996−0.03220.095*
C230.0439 (3)0.5168 (3)−0.1347 (2)0.1061 (13)
H23−0.01140.5440−0.16750.127*
C240.0947 (4)0.4441 (4)−0.1668 (2)0.1206 (17)
H240.07420.4231−0.22210.145*
C250.1749 (3)0.4018 (3)−0.1191 (3)0.1079 (13)
H250.20860.3520−0.14150.129*
C260.2056 (2)0.4338 (2)−0.0368 (2)0.0829 (9)
H260.25970.4044−0.00380.099*
C271.04152 (17)0.86358 (18)1.05005 (17)0.0566 (7)
C280.95804 (17)0.84392 (19)1.08034 (16)0.0564 (6)
C290.87055 (17)0.8270 (2)1.02945 (17)0.0631 (7)
H290.81820.81901.05230.076*
C300.86144 (18)0.8220 (2)0.94491 (17)0.0639 (7)
C310.93837 (19)0.8327 (2)0.91018 (17)0.0682 (8)
H310.93170.82740.85270.082*
C321.02445 (17)0.85131 (19)0.96112 (17)0.0589 (7)
N10.39904 (11)0.92136 (13)0.24143 (10)0.0418 (4)
N20.24573 (13)0.77163 (15)0.20113 (11)0.0458 (5)
N30.96429 (18)0.83694 (19)1.16985 (15)0.0744 (7)
N40.77007 (19)0.8000 (2)0.89112 (19)0.0919 (8)
N51.10421 (19)0.8585 (2)0.92183 (18)0.0847 (8)
O11.11914 (12)0.89116 (14)1.09451 (12)0.0783 (6)
O21.17777 (18)0.8186 (2)0.95562 (19)0.1361 (11)
O31.09238 (17)0.9046 (2)0.85521 (15)0.1185 (9)
O40.76491 (17)0.7930 (2)0.81627 (17)0.1279 (10)
O50.70246 (16)0.7909 (2)0.92284 (17)0.1272 (10)
O60.89418 (16)0.8534 (2)1.19597 (13)0.1050 (8)
O71.03892 (16)0.81087 (19)1.21524 (12)0.1012 (8)
H2A0.1979 (18)0.8141 (19)0.1706 (15)0.071 (8)*
U11U22U33U12U13U23
C10.0374 (12)0.0451 (13)0.0457 (13)−0.0046 (10)0.0073 (10)−0.0056 (10)
C20.0455 (14)0.0493 (14)0.0577 (15)−0.0011 (11)0.0124 (11)−0.0023 (12)
C30.0470 (15)0.0614 (16)0.0783 (18)−0.0019 (13)0.0180 (14)−0.0155 (15)
C40.0629 (18)0.0650 (18)0.089 (2)−0.0131 (15)0.0395 (16)−0.0199 (16)
C50.087 (2)0.0680 (18)0.0700 (18)−0.0081 (17)0.0415 (16)0.0043 (15)
C60.0658 (17)0.0579 (16)0.0580 (16)0.0000 (13)0.0199 (13)0.0037 (13)
C70.0376 (12)0.0453 (13)0.0440 (13)0.0005 (10)0.0069 (10)0.0003 (10)
C80.0412 (12)0.0425 (12)0.0436 (13)−0.0055 (10)0.0092 (10)−0.0015 (10)
C90.0498 (14)0.0611 (15)0.0471 (14)0.0071 (12)0.0058 (11)−0.0013 (12)
C100.0603 (17)0.0786 (19)0.0466 (15)0.0038 (14)0.0002 (12)0.0007 (13)
C110.0782 (19)0.0606 (17)0.0502 (15)−0.0116 (15)0.0097 (14)−0.0115 (13)
C120.084 (2)0.0510 (15)0.0606 (17)0.0058 (14)0.0072 (15)−0.0100 (13)
C130.0625 (16)0.0507 (14)0.0543 (15)0.0088 (12)0.0026 (12)−0.0052 (12)
C140.0430 (13)0.0548 (14)0.0463 (13)−0.0033 (11)0.0117 (11)−0.0078 (11)
C150.0471 (14)0.0617 (15)0.0447 (13)−0.0070 (12)0.0113 (11)−0.0056 (11)
C160.0409 (13)0.0591 (15)0.0533 (14)−0.0048 (11)0.0132 (11)−0.0115 (12)
C170.0404 (13)0.0605 (15)0.0490 (14)−0.0080 (11)0.0124 (11)−0.0116 (11)
C180.0587 (15)0.0462 (14)0.0661 (17)−0.0088 (12)0.0120 (13)0.0013 (12)
C190.0508 (15)0.0489 (14)0.0696 (17)−0.0067 (12)−0.0019 (13)−0.0012 (13)
C200.0555 (16)0.0620 (17)0.0680 (17)−0.0004 (13)0.0041 (13)−0.0009 (14)
C210.0639 (17)0.0642 (17)0.0604 (17)−0.0202 (14)0.0104 (14)−0.0037 (14)
C220.079 (2)0.089 (2)0.0653 (19)−0.0205 (17)0.0050 (16)0.0063 (16)
C230.109 (3)0.136 (3)0.064 (2)−0.053 (3)−0.001 (2)0.021 (2)
C240.156 (4)0.143 (4)0.065 (2)−0.085 (4)0.031 (3)−0.023 (3)
C250.132 (4)0.106 (3)0.101 (3)−0.051 (3)0.057 (3)−0.033 (2)
C260.086 (2)0.074 (2)0.092 (2)−0.0284 (17)0.0263 (18)−0.0186 (18)
C270.0428 (15)0.0475 (14)0.0742 (18)0.0036 (11)0.0022 (13)0.0119 (13)
C280.0469 (15)0.0597 (16)0.0597 (16)0.0076 (12)0.0061 (12)−0.0017 (12)
C290.0436 (15)0.0696 (18)0.0748 (19)0.0071 (13)0.0110 (13)0.0028 (14)
C300.0440 (15)0.0724 (18)0.0671 (18)0.0045 (13)−0.0044 (13)0.0109 (14)
C310.0667 (19)0.0738 (18)0.0592 (17)0.0046 (15)0.0042 (15)0.0179 (14)
C320.0489 (15)0.0607 (16)0.0679 (18)0.0020 (12)0.0148 (13)0.0167 (13)
N10.0365 (10)0.0470 (11)0.0418 (10)−0.0038 (8)0.0084 (8)−0.0065 (8)
N20.0396 (11)0.0494 (12)0.0470 (12)−0.0025 (9)0.0069 (9)−0.0044 (9)
N30.0598 (16)0.0925 (18)0.0698 (17)0.0040 (14)0.0123 (14)−0.0179 (13)
N40.0593 (18)0.112 (2)0.088 (2)0.0053 (16)−0.0179 (16)0.0149 (17)
N50.0690 (18)0.098 (2)0.091 (2)−0.0080 (15)0.0273 (16)0.0238 (16)
O10.0501 (11)0.0683 (12)0.1024 (15)−0.0069 (9)−0.0123 (10)0.0134 (10)
O20.0716 (16)0.177 (3)0.174 (3)0.0305 (17)0.0569 (17)0.071 (2)
O30.1133 (19)0.164 (2)0.0846 (16)−0.0169 (17)0.0360 (14)0.0298 (17)
O40.0950 (18)0.180 (3)0.0842 (17)0.0107 (17)−0.0297 (14)−0.0095 (18)
O50.0481 (13)0.188 (3)0.131 (2)−0.0046 (16)−0.0087 (14)0.0326 (19)
O60.0751 (15)0.160 (2)0.0868 (15)0.0011 (15)0.0321 (13)−0.0238 (14)
O70.0840 (15)0.152 (2)0.0609 (13)0.0327 (15)0.0013 (11)−0.0123 (13)
C1—C61.389 (3)C17—H17B0.9700
C1—C21.388 (3)C18—C191.482 (3)
C1—C71.524 (3)C18—N21.506 (3)
C2—C31.385 (3)C18—H18A0.9700
C2—H20.9300C18—H18B0.9700
C3—C41.370 (3)C19—C201.300 (3)
C3—H30.9300C19—H190.9300
C4—C51.364 (4)C20—C211.463 (3)
C4—H40.9300C20—H200.9300
C5—C61.387 (3)C21—C261.381 (4)
C5—H50.9300C21—C221.389 (4)
C6—H60.9300C22—C231.369 (4)
C7—N11.481 (3)C22—H220.9300
C7—C81.519 (3)C23—C241.366 (6)
C7—H70.9800C23—H230.9300
C8—C131.378 (3)C24—C251.364 (6)
C8—C91.385 (3)C24—H240.9300
C9—C101.380 (3)C25—C261.387 (4)
C9—H90.9300C25—H250.9300
C10—C111.369 (3)C26—H260.9300
C10—H100.9300C27—O11.251 (3)
C11—C121.368 (3)C27—C321.435 (3)
C11—H110.9300C27—C281.439 (3)
C12—C131.382 (3)C28—C291.375 (3)
C12—H120.9300C28—N31.456 (3)
C13—H130.9300C29—C301.367 (3)
C14—N11.462 (3)C29—H290.9300
C14—C151.510 (3)C30—C311.377 (4)
C14—H14A0.9700C30—N41.450 (3)
C14—H14B0.9700C31—C321.363 (3)
C15—N21.490 (3)C31—H310.9300
C15—H15A0.9700C32—N51.456 (3)
C15—H15B0.9700N2—H2A0.94 (3)
C16—N21.490 (3)N3—O61.214 (3)
C16—C171.503 (3)N3—O71.218 (3)
C16—H16A0.9700N4—O41.219 (3)
C16—H16B0.9700N4—O51.222 (3)
C17—N11.466 (2)N5—O21.204 (3)
C17—H17A0.9700N5—O31.221 (3)
C6—C1—C2118.0 (2)C19—C18—N2110.90 (19)
C6—C1—C7120.2 (2)C19—C18—H18A109.5
C2—C1—C7121.8 (2)N2—C18—H18A109.5
C3—C2—C1121.1 (2)C19—C18—H18B109.5
C3—C2—H2119.5N2—C18—H18B109.5
C1—C2—H2119.5H18A—C18—H18B108.0
C4—C3—C2119.7 (2)C20—C19—C18126.0 (2)
C4—C3—H3120.1C20—C19—H19117.0
C2—C3—H3120.1C18—C19—H19117.0
C5—C4—C3120.3 (3)C19—C20—C21128.1 (3)
C5—C4—H4119.9C19—C20—H20115.9
C3—C4—H4119.9C21—C20—H20115.9
C4—C5—C6120.4 (3)C26—C21—C22118.1 (3)
C4—C5—H5119.8C26—C21—C20119.7 (3)
C6—C5—H5119.8C22—C21—C20122.1 (3)
C5—C6—C1120.5 (2)C23—C22—C21121.2 (3)
C5—C6—H6119.7C23—C22—H22119.4
C1—C6—H6119.7C21—C22—H22119.4
N1—C7—C8111.90 (16)C24—C23—C22119.5 (4)
N1—C7—C1109.71 (17)C24—C23—H23120.2
C8—C7—C1112.23 (17)C22—C23—H23120.3
N1—C7—H7107.6C25—C24—C23121.1 (4)
C8—C7—H7107.6C25—C24—H24119.4
C1—C7—H7107.6C23—C24—H24119.4
C13—C8—C9117.9 (2)C24—C25—C26119.3 (4)
C13—C8—C7119.9 (2)C24—C25—H25120.4
C9—C8—C7122.2 (2)C26—C25—H25120.4
C10—C9—C8120.7 (2)C21—C26—C25120.8 (3)
C10—C9—H9119.7C21—C26—H26119.6
C8—C9—H9119.7C25—C26—H26119.6
C11—C10—C9120.6 (2)O1—C27—C32123.4 (3)
C11—C10—H10119.7O1—C27—C28124.9 (3)
C9—C10—H10119.7C32—C27—C28111.6 (2)
C12—C11—C10119.4 (2)C29—C28—C27124.0 (2)
C12—C11—H11120.3C29—C28—N3116.2 (2)
C10—C11—H11120.3C27—C28—N3119.8 (2)
C11—C12—C13120.2 (2)C30—C29—C28119.2 (3)
C11—C12—H12119.9C30—C29—H29120.4
C13—C12—H12119.9C28—C29—H29120.4
C8—C13—C12121.2 (2)C29—C30—C31121.1 (2)
C8—C13—H13119.4C29—C30—N4119.5 (3)
C12—C13—H13119.4C31—C30—N4119.3 (3)
N1—C14—C15110.89 (18)C32—C31—C30119.1 (3)
N1—C14—H14A109.5C32—C31—H31120.4
C15—C14—H14A109.5C30—C31—H31120.4
N1—C14—H14B109.5C31—C32—C27124.6 (3)
C15—C14—H14B109.5C31—C32—N5117.1 (3)
H14A—C14—H14B108.0C27—C32—N5118.3 (2)
N2—C15—C14111.20 (18)C14—N1—C17107.22 (16)
N2—C15—H15A109.4C14—N1—C7111.85 (16)
C14—C15—H15A109.4C17—N1—C7110.05 (16)
N2—C15—H15B109.4C16—N2—C15109.96 (17)
C14—C15—H15B109.4C16—N2—C18111.49 (18)
H15A—C15—H15B108.0C15—N2—C18112.54 (18)
N2—C16—C17111.29 (18)C16—N2—H2A107.5 (15)
N2—C16—H16A109.4C15—N2—H2A106.5 (15)
C17—C16—H16A109.4C18—N2—H2A108.5 (15)
N2—C16—H16B109.4O6—N3—O7122.6 (3)
C17—C16—H16B109.4O6—N3—C28118.8 (2)
H16A—C16—H16B108.0O7—N3—C28118.6 (2)
N1—C17—C16110.84 (18)O4—N4—O5123.6 (3)
N1—C17—H17A109.5O4—N4—C30117.9 (3)
C16—C17—H17A109.5O5—N4—C30118.5 (3)
N1—C17—H17B109.5O2—N5—O3123.2 (3)
C16—C17—H17B109.5O2—N5—C32119.1 (3)
H17A—C17—H17B108.1O3—N5—C32117.6 (3)
D—H···AD—HH···AD···AD—H···A
N2—H2A···O7i0.94 (3)2.59 (2)3.119 (3)116.6 (18)
N2—H2A···O1i0.94 (3)1.79 (3)2.710 (3)168 (2)
Table 1

Hydrogen-bond geometry (Å, °)

D—H⋯AD—HH⋯ADAD—H⋯A
N2—H2A⋯O7i0.94 (3)2.59 (2)3.119 (3)116.6 (18)
N2—H2A⋯O1i0.94 (3)1.79 (3)2.710 (3)168 (2)

Symmetry code: (i) .

  4 in total

1.  A short history of SHELX.

Authors:  George M Sheldrick
Journal:  Acta Crystallogr A       Date:  2007-12-21       Impact factor: 2.290

Review 2.  Cinnarizine--a labyrinthine sedative.

Authors:  G Towse
Journal:  J Laryngol Otol       Date:  1980-09       Impact factor: 1.469

3.  A clinical evaluation of cinnarizine (Mitronal) in various allergic disorders.

Authors:  R J BARRETT; B ZOLOV
Journal:  J Maine Med Assoc       Date:  1960-12

4.  Cinnarizinium dipicrate.

Authors:  Jerry P Jasinski; Ray J Butcher; M S Siddegowda; H S Yathirajan; C S Chidan Kumar
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2011-01-26
  4 in total
  5 in total

1.  1-[(4-Chloro-phen-yl)(phen-yl)meth-yl]piperazine-1,4-diium bis-(trichloro-acetate)-trichloro-acetic acid (1/1).

Authors:  Yanxi Song; C S Chidan Kumar; Mehmet Akkurt; S Chandraju; Hongqi Li
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2012-08-11

2.  4-[(4-Chloro-phen-yl)(phen-yl)-meth-yl]-piperazin-1-ium picrate monohydrate.

Authors:  Yanxi Song; C S Chidan Kumar; S Chandraju; S Naveen; Hongqi Li
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2012-07-18

3.  Cinnarizinium bis-(p-toluene-sulfonate) dihydrate.

Authors:  C N Kavitha; Ray J Butcher; Jerry P Jasinski; H S Yathirajan; A S Dayananda
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2013-03-06

4.  Cinnarizinium fumarate.

Authors:  C N Kavitha; Sema Ōztūrk Yildirim; Jerry P Jasinski; H S Yathirajan; Ray J Butcher
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2012-12-22

5.  4-Acetyl-piperazinium picrate.

Authors:  Channappa N Kavitha; Manpreet Kaur; Jerry P Jasinski; Hemmige S Yathirajan
Journal:  Acta Crystallogr Sect E Struct Rep Online       Date:  2014-05-31
  5 in total

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