121999-12-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 121999-12-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,9,9 and 9 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 121999-12:
(8*1)+(7*2)+(6*1)+(5*9)+(4*9)+(3*9)+(2*1)+(1*2)=140
140 % 10 = 0
So 121999-12-0 is a valid CAS Registry Number.
121999-12-0Relevant articles and documents
ENANTIOSELEKTIVE KATALYSE, 89 AZYKLISCHE UND MAKROZYKLISCHE BINAPHTHYLDERIVATE
Brunner, H.,Schiessling, H.
, p. 119 - 126 (2007/10/02)
A new synthesis of 3,3'-diformyl-2,2'-dihydroxy-1,1'-binaphthyl 1 is described.The macrocyclic compound 3 is formed by schiff base condensation of two moles of 1 with two moles of (R,R)-1,2-diamino-1,2-diphenylethane RR-2.Reduction of 3 yields the macrocy
