131527-18-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 131527-18-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,5,2 and 7 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 131527-18:
(8*1)+(7*3)+(6*1)+(5*5)+(4*2)+(3*7)+(2*1)+(1*8)=99
99 % 10 = 9
So 131527-18-9 is a valid CAS Registry Number.
131527-18-9Relevant articles and documents
REACTION OF 2,3-DIOXOPYRROLOISOQUINOLINES WITH o-PHENYLENEDIAMINE
Mikhailovskii, A. G.,Shklyaev, V. S.,Aleksandrov, B. B.
, p. 674 - 676 (2007/10/02)
Reaction of 1,2,3,4-tetrahydroisoquinoline enaminoamides with oxalyl chloride gives 2,3-dioxopyrroloisoquinolines which react with o-phenylenediamine to give spiro benzimidazolines or condensed quinoxalines, depending on the conditions used.
