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Liangshanin A

$1,120

  • Brand : BIOFRON

  • Catalogue Number : BN-O1005

  • Specification : 99%(HPLC)

  • CAS number : 122717-54-8

  • Formula : C20H26O4

  • Molecular Weight : 330.42

  • PUBCHEM ID : 91886223

  • Volume : 5mg

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Catalogue Number

BN-O1005

Analysis Method

HPLC,NMR,MS

Specification

99%(HPLC)

Storage

-20℃

Molecular Weight

330.42

Appearance

Powder

Botanical Source

This product is isolated and purified from the herbs of Rabdosia liangshanica

Structure Type

Diterpenoids

Category

Standards;Natural Pytochemical;API

SMILES

CC1(C2CC(C34C(C2(C=CC1=O)C)CCC(C3O)C(=C)C4=O)O)C

Synonyms

(5β,7α,8α,9β,10α,13α,14R)-7,14-Dihydroxykaura-1,16-diene-3,15-dione

IUPAC Name

(1R,2R,4S,9R,10S,13S,16R)-2,16-dihydroxy-5,5,9-trimethyl-14-methylidenetetracyclo[11.2.1.01,10.04,9]hexadec-7-ene-6,15-dione

Density

1.3±0.1 g/cm3

Solubility

Soluble in Chloroform,Dichloromethane,Ethyl Acetate,DMSO,Acetone,etc.

Flash Point

284.2±26.6 °C

Boiling Point

523.0±50.0 °C at 760 mmHg

Melting Point

InChl

InChI=1S/C20H26O4/c1-10-11-5-6-12-19(4)8-7-14(21)18(2,3)13(19)9-15(22)20(12,16(10)23)17(11)24/h7-8,11-13,15,17,22,24H,1,5-6,9H2,2-4H3/t11-,12-,13+,15+,17+,19-,20-/m0/s1

InChl Key

CNTXARLHZHVLRV-MJTHGBBVSA-N

WGK Germany

RID/ADR

HS Code Reference

2933990000

Personal Projective Equipment

Correct Usage

For Reference Standard and R&D, Not for Human Use Directly.

Meta Tag

provides coniferyl ferulate(CAS#:122717-54-8) MSDS, density, melting point, boiling point, structure, formula, molecular weight etc. Articles of coniferyl ferulate are included as well.>> amp version: coniferyl ferulate

No Technical Documents Available For This Product.

PMID

29477216

Abstract

Aims
Atrial fibrillation (AF) is the most common sustained arrhythmia encountered in clinical practice. Patients presenting with AF are often admitted to hospital for rhythm or rate control, symptom management, and/or anticoagulation. We investigated temporal trends in AF hospitalizations in United States from 1996 to 2010.

Methods
Data were obtained from the National Hospital Discharge Survey (NHDS), a national probability sample survey of discharges conducted annually by National Center for Health Statistics. Because of the survey design, sampling weights were applied to the raw NHDS data to produce national estimates. Hospitalizations with a primary diagnosis of AF were identified using International Classification of Diseases, 9th Revision, Clinical Modification (ICD-9-CM) code of 427.31. Weighted least squares regression was used to test for linear trends in the number of AF admissions, length of stay, and inpatient mortality. We further stratified AF admissions based on patients’ age, gender, and race.

Results
Admissions for a primary diagnosis of AF increased from approximately 286,000 in 1996 to about 410,000 in 2010 with a significant linear trend (β = 9470 additional admissions per year, p < 0.001). The trend of increased AF admissions was uniform across patient sub-groups. Overall, mean length of stay for AF admissions was 3.75 days, and this remained relatively stable over time (β = 0.002 days, p = 0.884). Inpatient mortality was 0.96% and also remained stable over time (β = 0.031%, p = 0.181). Conclusion Our data demonstrate an increase in the number of AF admissions but constant length of stay and mortality over time.

KEYWORDS

Atrial fibrillation, Hospitalization, Length of stay, Mortality

Title

Trends in atrial fibrillation hospitalizations in the United States: A report using data from the National Hospital Discharge Survey

Author

Muhammad Umer Nisar,a Muhammad Bilal Munir,b,∗ Michael S. Sharbaugh,a Floyd W. Thoma,a Andrew D. Althouse,a and Samir Sabaa

Publish date

2018 Jan-Feb

PMID

31391955

Abstract

The crystal structures of an inter­mediate, C10H9ClN4O, 3-[(6-chloro-7H-purin-7-yl)meth­yl]cyclo­butan-1-one (I), and two N-7 and N-9 regioisomeric oxetanocin nucleoside analogs, C10H13ClN4O, 3-[(6-chloro-8,9-di­hydro-7H-purin-7-yl)meth­yl]cyclo­butan-1-ol (II) and C10H11ClN4O, 3-[(6-chloro-9H-purin-9-yl)meth­yl]cyclo­butan-1-ol (IV), are reported. The crystal structures of the nucleoside analogs confirmed the reduction of the N-7- and N-9-substituted cyclo­butano­nes with LiAl(OtBu)3 to occur with facial selectivity, yielding cis-nucleosides analogs similar to those found in nature. Reduction of the purine ring of the N-7 cyclo­butanone to a di­hydro­purine was observed for compound (II) but not for the purine ring of the N-9 cyclo­butanone on formation of compound (IV). In the crystal of (I), mol­ecules are linked by a weak Cl⋯O inter­action, forming a 21 helix along [010]. The helices are linked by offset π-π inter­actions [inter­centroid distance = 3.498 (1) a], forming layers parallel to (101). In the crystal of (II), mol­ecules are linked by pairs of O—H⋯N hydrogen bonds, forming inversion dimers with an R 2 2(8) ring motif. The dimers are linked by O—H⋯N hydrogen bonds, forming chains along [001], which in turn are linked by C—H⋯π and offset π-π inter­actions [inter­centroid distance = 3.509 (1) a], forming slabs parallel to the ac plane. In the crystal of (IV), mol­ecules are linked by O—H⋯N hydrogen bonds, forming chains along [101]. The chains are linked by C—H⋯N and C—H⋯O hydrogen bonds and C—H⋯π and offset π-π inter­actions [inter­centroid distance = 3.364 (1) a], forming a supra­molecular framework.

KEYWORDS

crystal structure, oxetonacin, cyclo­butanone, cyclo­butanol, HIV, hydrogen bonding, offset π-π inter­actions, supra­molecular framework

Title

Crystal structures of the synthetic inter­mediate 3-[(6-chloro-7H-purin-7-yl)meth­yl]cyclo­butan-1-one, and of two oxetanocin derivatives: 3-[(6-chloro-8,9-di­hydro-7H-purin-7-yl)meth­yl]cyclo­butan-1-ol and 3-[(6-chloro-9H-purin-9-yl)meth­yl]cyclo­butan-1-ol

Author

Ayat Yaseen,a,‡ Muhammad Murtaza Hassan,a,‡ Edward Lee-Ruff,a and Gerald F. Audettea,*

Publish date

2019 Jun 1

PMID

32196246

Abstract

The I ii spectrum has been excited in electrodeless lamps and photographed from 655 A to 11084 A. Wavelengths and estimated intensities are given for almost 2,400 lines. A revision and extension of the earlier analyses of this spectrum has increased the number of known even levels from 43 to 124, and the number of odd levels from 55 to 190. New gJ-factors are given for 46 levels, and the previous designations of 40 levels are changed. Improved measurements in the vacuum ultraviolet region give a correction of 7.4 cm−1 to be subtracted from the values listed in Atomic Energy Levels, Vol. 3 (1958), for all levels above the ground configuration. The approximately 1,800 classified lines now include all of the strongest lines. The 1S0 of the ground configuration 5s25p4 has been found, and this configuration has been fitted to intermediate coupling theory. Magnetic dipole transitions between levels of the ground configuration, 3P2-1D2 (7282 A) and 3P1-1S0 (4460 A), have been observed and their nature confirmed by the Zeeman effect. The line 5p4 3P2-1D2 shows hyperfine structure which is in approximate agreement with a theoretical calculation of the expected structure. New levels have been found for almost all higher configurations. All previously known series have been extended and new ones found. From one of the new series, 5p3(4S°)5−12g5G6°, the principal ionization energy for I ii (154304 ±1 cm−1) has been derived. The results of the analysis are compared with theoretical expectations in a number of cases.

Title

The Spectrum of Singly Ionized Atomic Iodine (I ii)

Author

William C. Martin and Charles H. Corliss

Publish date

1960 Nov-Dec;


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