77891-08-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77891-08-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,8,9 and 1 respectively; the second part has 2 digits, 0 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 77891-08:
(7*7)+(6*7)+(5*8)+(4*9)+(3*1)+(2*0)+(1*8)=178
178 % 10 = 8
So 77891-08-8 is a valid CAS Registry Number.
77891-08-8Relevant articles and documents
Syntheses with α-Metalated Isocyanides, XLVII. - A Reagent for Nucleophilic 1,3-Diaminopropylation
Hoppe, Inga,Schoellkopf, Ulrich
, p. 103 - 106 (2007/10/02)
1-Tosyltetrahydropyrimidine 3 reacts with butyllithium (or LDA) to give the lithium compound 4 which undergoes ring opening to yield the isocyanide 5.This reacts with a second mole buthyllithium to furnish 1-lithio-3-propyl isocyanid
