Detail of "473-98-3"

CAS Number:
473-98-3
Name:
Lup-20(29)-ene-3,28-diol,(3b)-
Superlist Name:
Betulin
Molecular Structure:
Formula:
C₃₀H₅₀O₂
Molecular Weight:
442.72 .
Synonyms:
Lup-20(29)-ene-3b,28-diol(8CI);Lup-20(30)-ene-3b,28-diol (6CI);3aH-Cyclopenta[a]chrysene,lup-20(29)-ene-3,28-diol deriv.;(+)-Betulin;3,28-Dihydroxy-lupeol;3b,28-Dihydroxylup-20(29)-ene;Betuline;Betulinic alcohol;Betulinol;Betulol;NSC 4644;Trochol;Birch bark Extract;
EINECS:
207-475-5
Density:
1.017 g/cm³
Melting Point:
256-257 °C(lit.)
Boiling Point:
522.275 °C at 760mm Hg
Flash Point:
210.873 °C
Hazard Symbols:
Xn, Xi
Risk Codes:
36/37/38-20/21/22
Safety:
36/37-36-26 Details

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Light stabilizer for wood pulp and cellulose: Light stabilizer for wood pulp and cellulose. Chupka, E. I.; Zakazov, A. N.; Kovalev, V. E.; Nekrasova, V. B.; Nikulenkova, T. F. (Leningrad Forestry Academy; Siberian Scientific-Research Institute of Cellulose and Cardboard, USSR). U.S.S.R. SU 1079717 A1 15 Mar 1984 From: Otkrytiya, Izobret., Prom. Obraztsy, Tovarnye Znaki 1984, (10), 97. (Russian). (Union of Soviet Socialist Republics). CODEN: URXXAF. CLASS: IC: D21C009-10; C08K005-05. APPLICATION: SU 82-3475402 19 Jul 1982. DOCUMENT TYPE: Patent CA Section: 43 (Cellulose, Lignin, Paper, and Other Wood Products) Betulin [473-98-3] is used as a light stabilizer for wood pulp and cellulose.

Studies on the constituents of Chinese traditional drug-Suanzauren: Studies on the constituents of Chinese traditional drug-Suanzauren. Zeng, Lu; Zhang, Ruyi; Wang, Xu (Coll. Pharm., Beijing Med. Univ., Beijing, Peop. Rep. China). Zhiwu Xuebao, 28(5), 517-22 (Chinese) 1986. CODEN: CHWHAY. ISSN: 0577-7496. DOCUMENT TYPE: Journal CA Section: 63 (Pharmaceuticals) Suanzauren (the seeds of Zizyphus spinosus Hu) is a widely used Chinese traditional drug for treatment of insomnia, neurasthenia and sometimes for sleepiness caused by phys. exhaustion. Its CH2Cl2 ext. gave 4 pentacyclic triterpenes of the lup-20(29)-en group, namely betulin (I) [473-98-3], betulinic acid (II) [472-15-1], ceanothic acid (III) [21302-79-4], and alphitolic acid (IV) [19533-92-7], and one sterol, daucosterol [474-58-8]. Their structures were identified by spectroscopy. The later 3 compds. were isolated from Suanzauren for the first time.