130750-42-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 130750-42-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,0,7,5 and 0 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 130750-42:
(8*1)+(7*3)+(6*0)+(5*7)+(4*5)+(3*0)+(2*4)+(1*2)=94
94 % 10 = 4
So 130750-42-4 is a valid CAS Registry Number.
InChI:InChI=1/C6H6N4S/c7-4-3-1-2-11-5(3)10-6(8)9-4/h1-2H,(H4,7,8,9,10)
130750-42-4Relevant articles and documents
Synthesis of 2,4-diamino-thieno[2,3-d]pyrimidines
Link
, p. 797 - 803 (1990)
Condensation of 2-aminothiophene-3-carbonitrile (4) with guanidine or sequential addition of CS2 and NH3 to 4 provides 2,4-diaminothieno[2,3-d]pyrimidine (7). This compound yields, after sequential addition of sec-BuLi and either [3-
