19891-87-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 19891-87-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,8,9 and 1 respectively; the second part has 2 digits, 8 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 19891-87:
(7*1)+(6*9)+(5*8)+(4*9)+(3*1)+(2*8)+(1*7)=163
163 % 10 = 3
So 19891-87-3 is a valid CAS Registry Number.
19891-87-3Relevant articles and documents
17β,21β-EPOXYHOPAN-3β-OL AND Β-ALNINCANOL FROM EUPHORBIA SUPINA
Tanaka, Reiko,Kurimoto, Mari,Yoneda, Michiko,Matsunaga, Shunyo
, p. 2253 - 2256 (2007/10/02)
A new pentacyclic triterpene, 17β,21β-epoxyhopan-3β-ol was isolated from the whole herb of Euphorbia supina together with phytosterols and the known oxidoammaranol, β-alnincanol.