Summary The vitamin BIZ molecule possesses one cobalt and one phosphorus atom. An ebullioscopic molecular weight determination gave a value of 1490= t 150. Its composition is typified by Cel-64Hss-9zN14013PCor with CazHsa-soN1rO1sPC0 and C~~ H~ S-~ ZN~~ OI~ PCO agreeing very well with the analytical data.
[Cavallito Journal of Biological Chemistry, 1946 , vol. 164, p. 30 Full Text Show Details Greenstein Journal of Biological Chemistry, 1939 , vol. 128, p. 241,242]